# 100 leading Medical Practices companies in the world

Tamtam tracks 1,268 Medical Practices companies worldwide. This list ranks the 100 largest by number of employees on LinkedIn, led by Consultorio Odontológico, Studio Dentistico and Doctor. Their median headcount is 1,439. Half of them were founded in 1985 or later. The most common headquarters are Belo Horizonte (2), Birmingham (2) and Madrid (2).

These medical practices are large organizations, many of which are hospitals or university medical centers providing comprehensive healthcare services, education, and research. Examples include Consultorio Odontológico, a dental service in Brazil; Kasr AlAiny School of Medicine, Cairo University, which provides medical education; Sutter Health - Palo Alto Medical Foundation, a not-for-profit healthcare organization in Northern California; and Hospital Gregorio Marañón, a public hospital in Madrid known for its specialized care.

The companies listed show a global distribution, with significant presences in Europe, Africa, and North and South America. Several entities, such as Kasr AlAiny School of Medicine (founded 1837) and Sutter Health - Palo Alto Medical Foundation (founded 1930), have long histories, while others like Doctor (founded 2017) are more recent.

🌍 World · 100 companies · Updated Nov 13, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Consultorio Odontológico](https://www.tamtam.ai/c/consultorio-odontologico)<br>Consultorio Odontológico is a medical practice located in Salvador, Bahia, Brazil, providing dental services in the JARDIM NOVA ESPERANÇA area | Medical Practices | 🇧🇷 Salvador | 25,409 |  |
| 2 | [Studio Dentistico](https://www.tamtam.ai/c/studio-dentistico-udine) (dentistaudine.wordpress.com)<br>Dental clinic providing professional services and treatments, led by Dr Carlo Zampollo | Medical Practices | 🇮🇹 Udine | 9,129 | 1985 |
| 3 | [Doctor](https://www.tamtam.ai/c/doctor) (amazon.com)<br>We specialize in promoting and selling products from Amazoncom through posting deals, specials, and product details for easy customer access | Medical Practices | 🇺🇸 Mount Vernon | 6,073 | 2017 |
| 4 | [Kasr AlAiny School of Medicine, Cairo University](https://www.tamtam.ai/c/kasr-alainy-school-of-medicine-cairo-university) (medicine.cu.edu.eg)<br>Provider of medical education and training programs located at Cairo University's School of Medicine | Medical Practices | 🇪🇬 Cairo | 4,998 | 1837 |
| 5 | [Zahnarztpraxis](https://www.tamtam.ai/c/zahnarztpraxis) (afternic.com)<br>This is a general dental practice with a specific focus on implantology, offering comprehensive dental care with an emphasis on dental implant procedures. | Medical Practices | 🇨🇭 | 4,856 |  |
| 6 | [Medico](https://www.tamtam.ai/c/medico) (ww38.pixissive.com)<br>Provides ongoing primary care to residents and short-term medical care to visitors, with physicians available 24/7 for urgent or convenient appointments. | Medical Practices | 🇹🇷 Istanbul | 4,412 | 2006 |
| 7 | [Sutter Health - Palo Alto Medical Foundation](https://www.tamtam.ai/c/sutter-health-palo-alto-medical-foundation) (jobs.sutterhealthclinicians.org)<br>A not-for-profit healthcare organization providing operational support and advanced technology for physicians to deliver exceptional patient care in Northern California | Medical Practices | 🇺🇸 Mountain View | 4,394 | 1930 |
| 8 | [Arztpraxis](https://www.tamtam.ai/c/arztpraxis) (dr-thomas-schneider.com)<br>A preventative and sports medicine practice offering services such as performance diagnostics, vitamin/mineral analysis, orthomolecular medicine, custom check-ups, natural healing, and occupational medicine | Medical Practices | 🇩🇪 Nuremberg | 4,210 | 2006 |
| 9 | [KOMFO ANOKYE TEACHING HOSPITAL](https://www.tamtam.ai/c/komfo-anokye-teaching-hospital) (kathhsp.org)<br>A major hospital in Ghana with 1500 beds offering primary and specialist medical and surgical services, including a polyclinic Visit wwwkathhsporg for more information | Medical Practices | 🇬🇭 Kumasi | 3,242 |  |
| 10 | [Hospital Gregorio Marañón](https://www.tamtam.ai/c/hospital-gregorio-maranon) (hggm.es)<br>A public hospital in Madrid known for highly trained professionals, teaching and research, technological advancements, and national/international specialty care | Medical Practices | 🇪🇸 Madrid | 3,146 |  |
| 11 | [Hospital de Santa Maria](https://www.tamtam.ai/c/hospital-de-santa-maria) (min-saude.pt)<br>The company is a healthcare institution that provides medical care, education, research, and innovation to ensure universal access and quality services | Medical Practices | 🇵🇹 Lisbon | 3,111 | 1953 |
| 12 | [Hospital Clínico Universidad de Chile](https://www.tamtam.ai/c/hospital-clinico-universidad-de-chile) (redclinica.cl)<br>A leading clinical and academic institution affiliated with the University of Chile, providing comprehensive healthcare services, medical training, and cutting-edge technology | Medical Practices | 🇨🇱 Santiago | 2,906 |  |
| 13 | [PathCare](https://www.tamtam.ai/c/pathcare) (pathcare.co.za)<br>PathCare Laboratories is a network of pathology labs offering a wide range of testing services for medical, veterinary, environmental, and industrial purposes with a focus on quality and innovation | Medical Practices | 🇿🇦 Cape Town | 2,755 | 1922 |
| 14 | [sk:n](https://www.tamtam.ai/c/sk-n) (sknclinics.co.uk)<br>Specialist skin care clinics across the UK, offering expert Dermatologists and practitioners to help achieve better skin through personalized treatments | Medical Practices | 🇬🇧 Birmingham | 2,744 | 1990 |
| 15 | [Tabriz University of Medical Sciences](https://www.tamtam.ai/c/tabriz-university-of-medical-sciences) (tbzmed.ac.ir)<br>A top-ranked public university in Iran offering medical, pharmacy, and health-related degrees, with over 10 teaching hospitals in the region | Medical Practices | 🇦🇿 Tabriz | 2,668 | 1946 |
| 16 | [Martini Ziekenhuis](https://www.tamtam.ai/c/martini-ziekenhuis) (martiniziekenhuis.nl)<br>A topclinical training hospital focused on innovation, research, and providing high-quality care in a modern environment with a strong emphasis on personal growth and teamwork | Medical Practices | 🇳🇱 Groningen | 2,636 |  |
| 17 | [Serviço de Atendimento Móvel de Urgência -- SAMU](https://www.tamtam.ai/c/servico-de-atendimento-movel-de-urgencia-samu)<br>An emergency mobile medical service based in São Paulo, Brazil, providing urgent medical care and assistance to those in need | Medical Practices | 🇧🇷 São Paulo | 2,574 |  |
| 18 | [Angels of Care Pediatric Home Health](https://www.tamtam.ai/c/angels-of-care-pediatric-home-health) (angelsofcare.com)<br>Provider of high quality home health care for children and young adults in need, offering a variety of services and employing experienced healthcare professionals in multiple states | Medical Practices | 🇺🇸 McKinney | 2,569 | 2000 |
| 19 | [ChenMed](https://www.tamtam.ai/c/chenmed) (chenmed.com)<br>Dedicated to changing healthcare for underserved seniors with chronic diseases through high-touch, preventive primary care in a mission-driven culture | Medical Practices | 🇺🇸 Miami Gardens | 2,440 | 1970 |
| 20 | [Clove Dental](https://www.tamtam.ai/c/clove-dental) (clovedental.in)<br>India's largest dental network with 400+ clinics, 1000+ skilled doctors offering orthodontics, dental implants, oral surgery, and ethical dental services | Medical Practices | 🇮🇳 New Delhi | 2,379 | 2011 |
| 21 | [Affidea](https://www.tamtam.ai/c/affidea) (affidea.com)<br>A pan-European provider of diagnostic imaging and healthcare services with a focus on patient safety and high-quality medical care | Medical Practices | 🇳🇱 The Hague | 2,327 | 1991 |
| 22 | [Osecac](https://www.tamtam.ai/c/osecac)<br>A medical practice company located in Chajarí, Argentina, specializing in providing healthcare services to individuals in the area | Medical Practices | 🇦🇷 Chajarí | 2,200 |  |
| 23 | [Jordanian Royal Medical Services](https://www.tamtam.ai/c/jordanian-royal-medical-services) (jrms.mil.jo)<br>Providing distinguished, safe, and high-quality medical services in Jordan, committed to continuous improvement and optimal use of available resources | Medical Practices | 🇯🇴 Wadi Esseir | 2,121 |  |
| 24 | [Nutricionista](https://www.tamtam.ai/c/nutricionista) (varinhadigital.com.br)<br>A medical practice specializing in nutrition, located in Bucaramanga, Colombia | Medical Practices | 🇧🇷 São Paulo | 2,071 | 2010 |
| 25 | [IHA](https://www.tamtam.ai/c/iha) (trinityhealthmichigan.org)<br>A leading multi-specialty medical group in Michigan providing quality care for patients of all ages, with a focus on best outcomes and exceptional work experiences | Medical Practices | 🇺🇸 Ann Arbor | 2,030 | 1994 |
| 26 | [Uno Salud Dental](https://www.tamtam.ai/c/uno-salud-dental) (pagos.gtd.cl)<br>Uno Dental is a leading dental network in Chile, providing high-quality, affordable oral health care with modern technology and skilled professionals | Medical Practices | 🇨🇱 Todo Chile | 2,005 |  |
| 27 | [Clínica Colsanitas](https://www.tamtam.ai/c/clinica-colsanitas) (clinicacolsanitas.com)<br>Healthcare provider in Colombia offering medical, dental, optical, and ophthalmological services with a patient-centered approach focusing on comprehensive care throughout life | Medical Practices | 🇨🇴 Bogotá | 1,911 |  |
| 28 | [Laboratório Hermes Pardini](https://www.tamtam.ai/c/laboratorio-hermes-pardini) (guiapj.com.br)<br>A medical practice based in Belo Horizonte, Brazil, offering laboratory services with a focus on healthcare and diagnostics | Medical Practices | 🇧🇷 Belo Horizonte | 1,907 |  |
| 29 | [US Anesthesia Partners](https://www.tamtam.ai/c/us-anesthesia-partners) (usap.com)<br>Leader in high-quality anesthesia services with diverse team members providing direct care to patients, focused on improving patient outcomes nationwide | Medical Practices | 🇺🇸 Dallas | 1,901 | 2012 |
| 30 | [Consultorio Dental - Dentista](https://www.tamtam.ai/c/consultorio-dental-dentista)<br>A dental clinic based in Puebla, Mexico, providing medical services specializing in dentistry and oral care | Medical Practices | 🇲🇽 Puebla | 1,830 |  |
| 31 | [Azienda Ospedale Università Padova](https://www.tamtam.ai/c/azienda-ospedale-universita-padova) (aopd.veneto.it)<br>National relief and high specialization hospital with a focus on teaching, research, and collaboration with healthcare system and University of Padua | Medical Practices | 🇮🇹 Padua | 1,782 | 1764 |
| 32 | [Bupa Dental Care UK](https://www.tamtam.ai/c/bupa-dental-care-uk) (jobs.bupadentalcare.co.uk)<br>Providing high-quality private and NHS dental services across the UK with advanced technology and a focus on patient wellbeing. | Medical Practices | 🇬🇧 Bristol | 1,745 |  |
| 33 | [IU Health Methodist Hospital](https://www.tamtam.ai/c/iu-health-methodist-hospital) (iuhealth.org)<br>A top-ranked hospital known for quality, safety, nursing excellence, and high-quality clinical outcomes, recognized nationally by University Health Consortium and US News & World Report | Medical Practices | 🇺🇸 Indianapolis | 1,724 |  |
| 34 | [Azienda Ospedaliera Universitaria Integrata Verona](https://www.tamtam.ai/c/azienda-ospedaliera-universitaria-integrata-verona) (ospedaleuniverona.it)<br>A renowned hospital trust in Veneto, offering excellent specialties, research, assistance, training, and advanced medical procedures like transplants and surgeries | Medical Practices | 🇮🇹 Verona | 1,700 | 1520 |
| 35 | [Närhälsan](https://www.tamtam.ai/c/narhalsan) (narhalsan.se)<br>A public primary care provider with multiple locations in Västra Götaland, offering comprehensive healthcare services and research to improve patient outcomes | Medical Practices | 🇸🇪 Gothenburg | 1,662 | 2013 |
| 36 | [Hôpital Erasme - Cliniques Universitaires de Bruxelles](https://www.tamtam.ai/c/hopital-erasme-cliniques-universitaires-de-bruxelles) (erasme.ulb.ac.be)<br>Academic hospital affiliated with a university, providing patient care, education, and research in various specialized fields with over 3,000 staff members | Medical Practices | 🇧🇪 Anderlecht | 1,633 | 1977 |
| 37 | [LaserAway](https://www.tamtam.ai/c/laseraway) (laseraway.com)<br>Aesthetic dermatology leader offering state-of-the-art treatments for skin rejuvenation, hair removal, body contouring, and injectables with a focus on professional growth and flexibility | Medical Practices | 🇺🇸 Beverly Hills | 1,624 | 2006 |
| 38 | [Hospital da Restauração](https://www.tamtam.ai/c/hospital-da-restauracao)<br>A medical practice company located in Recife, Brazil, specializing in providing healthcare services at Hospital da Restauração | Medical Practices | 🇧🇷 Recife | 1,616 |  |
| 39 | [Klinikum Stuttgart](https://www.tamtam.ai/c/klinikum-stuttgart) (klinikum-stuttgart.de)<br>A hospital in Stuttgart offering comprehensive medical care as a teaching hospital affiliated with the University of Tübingen, serving the region's residents | Medical Practices | 🇩🇪 Stuttgart | 1,596 | 1820 |
| 40 | [PIMS](https://www.tamtam.ai/c/pims-tampa) (pims-inc.com)<br>A leading provider of comprehensive medical billing and practice management services for healthcare providers of all specialties since 1976 | Medical Practices | 🇺🇸 Tampa | 1,564 | 1998 |
| 41 | [Hospital Santa Casa de Misericórdia](https://www.tamtam.ai/c/hospital-santa-casa-de-misericordia)<br>Medical practice located in Porto Alegre, Brazil, offering services at Hospital Santa Casa de Misericórdia | Medical Practices | 🇧🇷 Porto Alegre | 1,549 |  |
| 42 | [Hospital Universitario Ramón y Cajal](https://www.tamtam.ai/c/hospital-universitario-ramon-y-cajal)<br>A medical practice company located in Madrid, Spain, specializing in providing healthcare services at Hospital Universitario Ramón y Cajal | Medical Practices | 🇪🇸 Madrid | 1,548 |  |
| 43 | [Crossroads](https://www.tamtam.ai/c/crossroads) (crossroadstreatmentcenters.com)<br>A behavioral healthcare company offering medication-assisted treatment, hepatitis C services, toxicology screening, and digital health screens to improve health outcomes and equity | Medical Practices | 🇺🇸 Greenville | 1,513 | 2005 |
| 44 | [Ospedale Policlinico San Martino](https://www.tamtam.ai/c/ospedale-policlinico-san-martino) (ospedalesanmartino.it)<br>A leading hospital in Liguria, Italy, providing high-level healthcare in cardiology, oncology, neurology, and emergency services, while also focusing on research and medical education | Medical Practices | 🇮🇹 Genoa | 1,512 | 1923 |
| 45 | [Farmacia Elia Turrion](https://www.tamtam.ai/c/farmacia-elia-turrion) (farmaciaturrion.com)<br>The company collects and processes personal data in compliance with data protection laws for individuals participating in events on their website | Medical Practices | 🇪🇸 Muro dAlcoi | 1,510 |  |
| 46 | [Hospital Universitario Puerta De Hierro Majadahonda](https://www.tamtam.ai/c/hospital-universitario-puerta-de-hierro-majadahonda)<br>A medical practice company located in Spain, offering services at Hospital Universitario Puerta de Hierro Majadahonda on CALLE MANUEL DE FALLA 1 | Medical Practices | 🇪🇸 Majadahonda | 1,456 |  |
| 47 | [Hospital Madre Teresa](https://www.tamtam.ai/c/hospital-madre-teresa) (hospitalmadreteresa.org.br)<br>Providing excellent and sustainable care for clients' holistic health needs | Medical Practices | 🇧🇷 Belo Horizonte | 1,456 | 1981 |
| 48 | [Twin Cities Orthopedics](https://www.tamtam.ai/c/twin-cities-orthopedics) (tcomn.com)<br>A leading orthopedic practice offering comprehensive medical care and treatment for injuries and conditions affecting muscles, joints, and bones in Minnesota and Wisconsin | Medical Practices | 🇺🇸 Golden Valley | 1,453 |  |
| 49 | [Corposalud](https://www.tamtam.ai/c/corposalud) (clinicacorposalud.es)<br>Corposalud is a medical practice company in Valencia, Spain, providing healthcare services to patients in need | Medical Practices | 🇪🇸 Valencia | 1,453 |  |
| 50 | [Forefront Dermatology](https://www.tamtam.ai/c/forefront-dermatology) (forefrontdermatology.com)<br>Leading dermatology practice group providing innovative solutions and exceptional care for skin health, offering general, surgical, and cosmetic dermatology services | Medical Practices | 🇺🇸 Manitowoc | 1,439 | 1977 |
| 51 | [Hospital Clínica Bíblica](https://www.tamtam.ai/c/hospital-clinica-biblica) (clinicabiblica.com)<br>Leading Costa Rican private hospital founded in 1929, offering a wide range of medical specialties with a focus on quality healthcare and infrastructure improvements | Medical Practices | 🇨🇷 San José | 1,434 | 1929 |
| 52 | [Royal North Shore Hospital](https://www.tamtam.ai/c/royal-north-shore-hospital) (nslhd.health.nsw.gov.au)<br>Principal tertiary referral hospital providing complex medical services, trauma care, research, and high-quality clinical treatment including major trauma, burns, neurosurgery, and maternity services | Medical Practices | 🇦🇺 St Leonards | 1,413 |  |
| 53 | [Austin Regional Clinic: ARC](https://www.tamtam.ai/c/austin-regional-clinic-arc) (austinregionalclinic.com)<br>A multispecialty medical group in Central Texas providing comprehensive healthcare services through 35 locations, focusing on convenience, quality, and patient satisfaction | Medical Practices | 🇺🇸 Austin | 1,408 | 1980 |
| 54 | [Organo Gold International](https://www.tamtam.ai/c/organo-gold-international) (spiritualhealth.organogold.com)<br>Offers a range of premium coffee, tea, and nutraceutical products infused with Ganoderma lucidum, promoting a healthier lifestyle globally. | Medical Practices | 🇺🇸 Ferndale | 1,373 |  |
| 55 | [ENT and Allergy Associates](https://www.tamtam.ai/c/ent-and-allergy-associates) (entandallergy.com)<br>Comprehensive ear, nose, throat, allergy, and audiology care provided by over 450 clinicians across New York, New Jersey, Pennsylvania. | Medical Practices | 🇺🇸 Tarrytown | 1,341 | 1988 |
| 56 | [New Season](https://www.tamtam.ai/c/new-season) (newseason.com)<br>An organization of outpatient substance use treatment centers, specializing in opioid addiction treatment through counseling and support for recovery and reintegration into communities | Medical Practices | 🇺🇸 Maitland | 1,326 | 1986 |
| 57 | [OrthoVirginia](https://www.tamtam.ai/c/orthovirginia) (orthovirginia.com)<br>Leading orthopedic and therapy care provider in Virginia with a team of specialists offering high-quality, cost-effective services to improve musculoskeletal health in communities served | Medical Practices | 🇺🇸 Richmond | 1,309 |  |
| 58 | [Advanced Dermatology and Cosmetic Surgery](https://www.tamtam.ai/c/advanced-dermatology-and-cosmetic-surgery) (advancedderm.com)<br>A leading dermatology practice with over 150 locations specializing in comprehensive care, cutting-edge technology, individualized treatment plans, and aesthetic results | Medical Practices | 🇺🇸 Maitland | 1,307 | 1989 |
| 59 | [SEX AND GENDER WOMENS HEALTH COLLABORATIVE](https://www.tamtam.ai/c/sex-and-gender-womens-health-collaborative) (sgwhc.org)<br>The company focuses on integrating sex and gender factors into medical care to improve health outcomes for women through collaboration and resources | Medical Practices | 🇺🇸 Schaumburg | 1,305 | 2012 |
| 60 | [Revere Health](https://www.tamtam.ai/c/revere-health) (reverehealth.com)<br>A leading independent multispecialty physician group in Utah and Nevada with over 200 providers offering comprehensive healthcare at multiple locations Engaged in innovative value-based care | Medical Practices | 🇺🇸 Provo | 1,285 | 1969 |
| 61 | [Centre Dentaire](https://www.tamtam.ai/c/centre-dentaire) (centredentairest-bruno.com)<br>A dental center providing high-quality oral care services with a team of experienced and knowledgeable professionals | Medical Practices | 🇨🇦 Saint-Bruno-de-Montarville | 1,276 |  |
| 62 | [Rothman Orthopaedics](https://www.tamtam.ai/c/rothman-orthopaedics) (rothmanortho.com)<br>Leading orthopaedic practice offering high-quality treatment for various musculoskeletal issues with top specialists, recognized for excellence, team physicians for professional sports teams, and urgent care services available | Medical Practices | 🇺🇸 Philadelphia | 1,269 | 1966 |
| 63 | [Hôpitaux Universitaires Pitié Salpêtrière - Charles Foix (APHP)](https://www.tamtam.ai/c/hopitaux-universitaires-pitie-salpetriere-charles-foix-aphp) (validate.perfdrive.com)<br>Large public hospital in Paris providing comprehensive medical care, emergency services, and specialized treatments within the AP-HP network. | Medical Practices | 🇫🇷 Paris | 1,259 | 1656 |
| 64 | [OrthoCarolina](https://www.tamtam.ai/c/orthocarolina) (orthocarolina.com)<br>The company offers premier orthopedic care with convenient online scheduling, walk-in options, and after-hours urgent care for compassionate patient service | Medical Practices | 🇺🇸 Charlotte | 1,230 | 2005 |
| 65 | [Santé Québec - Institut de cardiologie de Montréal](https://www.tamtam.ai/c/sante-quebec-institut-de-cardiologie-de-montreal) (icm-mhi.org)<br>A highly specialized hospital focusing on cardiology, dedicated to care, research, education, prevention, rehabilitation, and evaluating new technologies in the field | Medical Practices | 🇨🇦 Montreal | 1,228 | 1954 |
| 66 | [Vancouver Clinic](https://www.tamtam.ai/c/vancouver-clinic) (tvc.org)<br>Delivering compassionate healthcare for over 90 years, focusing on personalized patient care through face-to-face interactions and genuine human connections | Medical Practices | 🇺🇸 Vancouver | 1,220 | 1936 |
| 67 | [Azienda ULSS 6 Euganea](https://www.tamtam.ai/c/azienda-ulss-6-euganea) (aulss6.veneto.it)<br>A healthcare organization in Veneto, Italy, offering medical and social services to over a million residents through hospitals, clinics, and residential facilities | Medical Practices | 🇮🇹 Padua | 1,215 | 2017 |
| 68 | [Princess Margaret Cancer Centre](https://www.tamtam.ai/c/princess-margaret-cancer-centre-toronto) (uhnresearch.ca)<br>Leading cancer research center with internationally recognized scientists focusing on various aspects of cancer through cutting-edge research and state-of-the-art tools | Medical Practices | 🇨🇦 Toronto | 1,211 |  |
| 69 | [UNIVERSITY OF IOWA HOSPITALS &CLINCS](https://www.tamtam.ai/c/university-of-iowa-hospitals-and-clincs)<br>A medical practice company located in Iowa City, Iowa, providing healthcare services at the University of Iowa Hospitals & Clinics on Hawkins Drive | Medical Practices | 🇺🇸 Iowa City | 1,204 |  |
| 70 | [Hattiesburg Clinic, PA](https://www.tamtam.ai/c/hattiesburg-clinic-pa) (hattiesburgclinic.com)<br>A medical practice that provides high quality, patient-centered healthcare with a focus on commitment, compassion, fairness, integrity, respect, and innovation | Medical Practices | 🇺🇸 Hattiesburg | 1,196 | 1963 |
| 71 | [Watson Clinic LLP](https://www.tamtam.ai/c/watson-clinic-llp) (watsonclinic.com)<br>A leading multispecialty medical clinic in Florida offering comprehensive healthcare services with over 220 physicians in 40 specialties, serving Central Florida residents since 1941 | Medical Practices | 🇺🇸 Lakeland | 1,184 | 1941 |
| 72 | [Schweiger Dermatology Group](https://www.tamtam.ai/c/schweiger-dermatology-group) (schweigerderm.com)<br>Leading dermatology practice with 110 offices and 380 providers offering medical, cosmetic, and surgical dermatology services, serving over 15 million patients annually | Medical Practices | 🇺🇸 New York | 1,180 | 2010 |
| 73 | [Addenbrooke’s Hospital](https://www.tamtam.ai/c/addenbrooke-s-hospital)<br>A medical practice based in Cambridge, UK, specializing in providing healthcare services at Addenbrooke’s Hospital on Hills Road | Medical Practices | 🇬🇧 Cambridge | 1,172 |  |
| 74 | [American Family Care](https://www.tamtam.ai/c/american-family-care) (americanfamilycare.com)<br>A leading provider of urgent care and accessible primary care with over 160 clinics, 500 physicians, and 2 million patients annually | Medical Practices | 🇺🇸 Birmingham | 1,171 | 1982 |
| 75 | [Hospital CIMA](https://www.tamtam.ai/c/hospital-cima) (hospitalcima.com)<br>A medical facility located in San José, Costa Rica, providing healthcare services in a hospital setting | Medical Practices | 🇨🇷 Escazú | 1,147 | 2000 |
| 76 | [ASL Teramo](https://www.tamtam.ai/c/asl-teramo) (aslteramo.it)<br>A healthcare provider in the province of Teramo, offering a range of medical services and resources to the local community | Medical Practices | 🇮🇹 Teramo | 1,140 |  |
| 77 | [Dental Associates](https://www.tamtam.ai/c/dental-associates) (dentalassociates.com)<br>This family-owned dental group provides complete dentistry and all dental specialties for residents of all ages across numerous Eastern Wisconsin locations, offering quality, affordable care. | Medical Practices | 🇺🇸 Milwaukee | 1,135 | 1974 |
| 78 | [Cerrahpaşa Faculty of Medicine](https://www.tamtam.ai/c/cerrahpasa-faculty-of-medicine) (cerrahpasa.iuc.edu.tr)<br>Affiliated with Istanbul University-Cerrahpaşa, this medical school provides education and training at the Cerrahpaşa Faculty of Medicine | Medical Practices | 🇹🇷 Fatih | 1,127 | 1827 |
| 79 | [ApolloMD](https://www.tamtam.ai/c/apollomd) (apollomd.com)<br>A national physician-led group practice specializing in Emergency Medicine, Hospital Medicine, Anesthesia, and Radiology services, focusing on quality, efficiency, and patient satisfaction | Medical Practices | 🇺🇸 Atlanta | 1,099 |  |
| 80 | [Beltone](https://www.tamtam.ai/c/beltone) (beltone.com)<br>A company dedicated to setting new standards in hearing aids, using cutting-edge technology to provide personalized solutions and improve quality of life for those with hearing loss | Medical Practices | 🇺🇸 Chicago | 1,093 | 1940 |
| 81 | [Royal Brisbane & Women’s Hospital](https://www.tamtam.ai/c/royal-brisbane-and-women-s-hospital) (linkedin.com)<br>A medical practice company located in Herston, Queensland, Australia, providing services at the Royal Brisbane & Women’s Hospital | Medical Practices | 🇦🇺 Herston | 1,084 | 1952 |
| 82 | [Summit Medical Group](https://www.tamtam.ai/c/summit-medical-group) (summitmedical.com)<br>Healthcare provider recruiting various medical professionals, clinical staff, and administrative roles for positions in family medicine, internal medicine, pediatrics, and more Visit website for open positions | Medical Practices | 🇺🇸 Knoxville | 1,082 | 1995 |
| 83 | [Sono Bello](https://www.tamtam.ai/c/sono-bello) (sonobello.com)<br>A leading cosmetic surgery practice with over 100 locations in the US, specializing in total body transformation with advanced micro-laser liposuction procedures | Medical Practices | 🇺🇸 Bellevue | 1,031 | 2008 |
| 84 | [KINGS COUNTY HOSPITAL](https://www.tamtam.ai/c/kings-county-hospital)<br>A medical practice company located in Brooklyn, New York, providing healthcare services at 451 Clarkson Ave | Medical Practices | 🇺🇸 Brooklyn | 1,017 |  |
| 85 | [Conselleria de Sa](https://www.tamtam.ai/c/conselleria-de-sa) (clinicapassos.es)<br>A recently created company in the healthcare sector specializing in comprehensive foot care in the university area, equipped with suitable treatment rooms | Medical Practices | 🇪🇸 Castellón de la plana | 1,014 |  |
| 86 | [EmergeOrtho](https://www.tamtam.ai/c/emergeortho) (emergeortho.com)<br>A leading provider of orthopedic, spine, and pain management care with a focus on helping patients lead active and healthy lives | Medical Practices | 🇺🇸 Numerous Locations | 1,009 | 2016 |
| 87 | [BrightView](https://www.tamtam.ai/c/brightview) (brightviewhealth.com)<br>Outpatient addiction medicine practice offering medication-assisted treatment, psychological, and social services to bring life-changing recovery to communities with values of Respect, Inspiration, Service, and Excellence | Medical Practices | 🇺🇸 Cincinnati | 989 | 2015 |
| 88 | [Texas Health Physicians Group](https://www.tamtam.ai/c/texas-health-physicians-group) (texashealth.org)<br>A leading physician organization in North Texas with over 800 providers, 220 clinics, and a range of services supporting patient care and practice growth | Medical Practices | 🇺🇸 Arlington | 983 | 2011 |
| 89 | [Synnovis](https://www.tamtam.ai/c/synnovis)<br>A partnership providing pathology services in south east London, conducting 32 million tests annually to improve patient outcomes and well-being | Medical Practices | 🇬🇧 London | 980 |  |
| 90 | [US DEPT. OF VETERANS AFFAIRS](https://www.tamtam.ai/c/us-dept-of-veterans-affairs) (dva.wa.gov)<br>A medical practice company located in Walla Walla, WA, providing services for veterans and their families in the United States | Medical Practices | 🇺🇸 Walla Walla | 953 | 2017 |
| 91 | [Al Mokhtabar Labs - معامل المختبر](https://www.tamtam.ai/c/al-mokhtabar-labs) (almokhtabar.com)<br>Leading private medical laboratory in the Middle East, offering over 1,200 clinical tests with a network of 100+ branches and employing top medical professionals | Medical Practices | 🇪🇬 Giza | 950 | 1979 |
| 92 | [Santa Casa de São Bernardo do Campo](https://www.tamtam.ai/c/santa-casa-de-sao-bernardo-do-campo) (santacasasbc.org.br)<br>Healthcare facility providing medical consultations, multidisciplinary outpatient services, various medical specialties, exams, and accepting multiple health insurance plans in São Bernardo do Campo, São Paulo | Medical Practices | 🇧🇷 São Bernardo do Campo | 945 | 1968 |
| 93 | [Sheridan Healthcare](https://www.tamtam.ai/c/sheridan-healthcare) (sheridanhealthcare.com)<br>Leading provider of anesthesia management solutions for physicians, hospitals, and outpatient centers Offers quality healthcare providers competitive benefits, training, and flexible work schedules | Medical Practices | 🇺🇸 Sunrise | 944 | 1953 |
| 94 | [Centro di medicina](https://www.tamtam.ai/c/centro-di-medicina) (centrodimedicina.com)<br>A private medical network in Veneto, offering excellence in specialized services, cutting-edge technology, and personalized care for patients and occupational health services | Medical Practices | 🇮🇹 Villorba | 943 | 1983 |
| 95 | [Crystal Run Health](https://www.tamtam.ai/c/crystal-run-health) (crystalrunhealthcare.com)<br>Innovative multi-specialty medical practice focused on transforming healthcare delivery with a strong commitment to primary care and advanced technology | Medical Practices | 🇺🇸 Middletown | 943 | 1996 |
| 96 | [21st Century Oncology](https://www.tamtam.ai/c/21st-century-oncology) (genesiscareus.com)<br>The company provides personalized cancer treatments tailored to individual patient needs through a multidisciplinary approach | Medical Practices | 🇺🇸 Fort Myers | 938 |  |
| 97 | [US Eye](https://www.tamtam.ai/c/us-eye) (useye.com)<br>Physician-led eye care consolidator focused on delivering high quality services nationwide through a vertically integrated model for premium patient outcomes | Medical Practices | 🇺🇸 University Park | 925 | 2019 |
| 98 | [Proliance Surgeons](https://www.tamtam.ai/c/proliance-surgeons) (proliancesurgeons.com)<br>A team of experienced specialists and surgeons offering advanced medical care in various fields such as Orthopedics, ENT, general surgery, and OB/GYN | Medical Practices | 🇺🇸 Seattle | 921 | 1993 |
| 99 | [Princess Margaret Cancer Centre](https://www.tamtam.ai/c/princess-margaret-cancer-centre) (uhn.ca)<br>Keep up-to-date on the latest developments and changes at a prominent hospital through news articles and general information | Medical Practices | 🇨🇦 Toronto | 898 |  |
| 100 | [CareMount Medical](https://www.tamtam.ai/c/caremount-medical) (east.optum.com)<br>A part of Optum, CareMount Medical provides high-quality, patient-centered medical care to over 16 million patients in New York City and surrounding counties | Medical Practices | 🇺🇸 Mount Kisco | 895 |  |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 13, 2026.

## More company lists in the world

- [The largest companies in the world](https://www.tamtam.ai/l/largest-companies-in-the-world) (415,089)
- [Multinational companies in the world](https://www.tamtam.ai/l/multinational-companies-in-the-world) (74,905)
- [Manufacturers in the world](https://www.tamtam.ai/l/manufacturers-in-the-world) (39,566)
- [Retail chains in the world](https://www.tamtam.ai/l/retail-chains-in-the-world) (35,498)
- [Companies with in-house R&D in the world](https://www.tamtam.ai/l/r-and-d-companies-in-the-world) (34,334)
- [Financial services firms in the world](https://www.tamtam.ai/l/financial-services-firms-in-the-world) (26,817)
- [Professional services firms in the world](https://www.tamtam.ai/l/professional-services-firms-in-the-world) (24,737)
- [Education providers in the world](https://www.tamtam.ai/l/education-companies-in-the-world) (23,937)
- [IT Services and IT Consulting companies in the world](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-in-the-world) (23,571)
- [Critical infrastructure operators in the world](https://www.tamtam.ai/l/critical-infrastructure-operators-in-the-world) (23,312)
- [SaaS companies in the world](https://www.tamtam.ai/l/saas-companies-in-the-world) (22,459)
- [IT services companies in the world](https://www.tamtam.ai/l/it-services-companies-in-the-world) (20,934)
- [Software Development companies in the world](https://www.tamtam.ai/l/software-development-companies-in-the-world) (20,534)
- [Hardware manufacturers in the world](https://www.tamtam.ai/l/hardware-companies-in-the-world) (20,150)
- [Financial Services companies in the world](https://www.tamtam.ai/l/financial-services-companies-in-the-world) (19,958)
- [Companies with a mobile app in the world](https://www.tamtam.ai/l/companies-with-mobile-app-in-the-world) (18,922)
- [Public sector organisations in the world](https://www.tamtam.ai/l/public-sector-organisations-in-the-world) (18,492)
- [Healthcare providers in the world](https://www.tamtam.ai/l/healthcare-providers-in-the-world) (16,037)
- [Consulting firms in the world](https://www.tamtam.ai/l/consulting-firms-in-the-world) (16,009)
- [Family-owned companies in the world](https://www.tamtam.ai/l/family-owned-companies-in-the-world) (14,667)
- [Distributors and wholesalers in the world](https://www.tamtam.ai/l/distributors-and-wholesalers-in-the-world) (13,470)
- [Hospitals and Health Care companies in the world](https://www.tamtam.ai/l/hospitals-and-health-care-companies-in-the-world) (12,916)
- [Corporate groups and holding companies in the world](https://www.tamtam.ai/l/holding-companies-in-the-world) (12,862)
- [E-commerce companies in the world](https://www.tamtam.ai/l/ecommerce-companies-in-the-world) (12,013)

## The same list elsewhere

- [Medical Practices companies in the United States](https://www.tamtam.ai/l/medical-practices-companies-united-states) (668)
- [Medical Practices companies in Europe](https://www.tamtam.ai/l/medical-practices-companies-in-europe) (363)
- [Medical Practices companies in France](https://www.tamtam.ai/l/medical-practices-companies-france) (185)
- [Medical Practices companies in Latin America](https://www.tamtam.ai/l/medical-practices-companies-in-latin-america) (110)
- [Medical Practices companies in Brazil](https://www.tamtam.ai/l/medical-practices-companies-brazil) (46)
- [Medical Practices companies in Italy](https://www.tamtam.ai/l/medical-practices-companies-italy) (40)
- [Medical Practices companies in the United Kingdom](https://www.tamtam.ai/l/medical-practices-companies-united-kingdom) (39)
- [Medical Practices companies in Canada](https://www.tamtam.ai/l/medical-practices-companies-canada) (34)
- [Medical Practices companies in Asia](https://www.tamtam.ai/l/medical-practices-companies-in-asia) (33)
- [Medical Practices companies in Spain](https://www.tamtam.ai/l/medical-practices-companies-spain) (27)
- [Medical Practices companies in Africa](https://www.tamtam.ai/l/medical-practices-companies-in-africa) (26)

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Source: https://www.tamtam.ai/l/medical-practices-companies-in-the-world