| # | Company | Employees |
|---|---|---|
| 1 |
Grupo OSDEosde.com.ar
A leading Argentine business group prioritizing members' needs, offering medical assistance through various companies and fulfilling social commitment through a foundation |
9,353 |
| 2 |
Hospital Italiano de Buenos Aireshospitalitaliano.org.ar
A leading healthcare institution with over 9,000 employees, providing high-quality care, education, research, and coverage for 180,000+ members |
8,354 |
| 3 |
Swiss Medical Groupswissmedical.com.ar
A leading Argentine group dedicated to healthcare, providing protection and high-quality services through a variety of companies in the industry |
7,055 |
| 4 |
Hospital Alemánhospitalaleman.org.ar
A healthcare organization committed to providing evidence-based medical care with a focus on excellence, respect, ethics, and transparency in all interactions |
3,215 |
| 5 |
Hospital Británicohospitalbritanico.org.ar
A non-profit hospital founded in 1844, providing healthcare to those in need, with a focus on education, research, and medical advancements |
3,049 |
| 6 |
Obra Socialiosfa.gob.ar
Non-profit social welfare organization providing medical, financial assistance, tourism, and recreation services to affiliated members, with branches in major cities and hotels in select locations |
2,928 |
| 7 |
CEMICcemic.edu.ar
A nonprofit medical and clinical research institution focused on academic medical education, research, and community healthcare services for over 55 years |
2,510 |
| 8 |
Medicusmedicus.com.ar
Leading private medical provider with over 4 decades of experience, emphasizing quality, research, constant training, and innovation to meet healthcare expectations |
2,472 |
| 9 |
Hospital de Clínicas "José de San Martín"hospitaldeclinicas.uba.ar
A teaching hospital in Buenos Aires, Argentina affiliated with the University of Buenos Aires, known for its high academic standards |
1,989 |
| 10 |
Hospital Militar Central Cirujano Mayor Dr. Cosme Argerich
Hospital Militar Central Cirujano Mayor Dr Cosme Argerich is a health care company located in Madrid, Spain, providing medical services and hospital care |
1,240 |
| 11 |
Sanatorio Otamendiotamendi.com.ar
A prestigious medical institution with a longstanding commitment to excellence in medical care, cutting-edge technology, and patient comfort since 1928 |
1,158 |
| 12 |
SANATORIO FINOCHIETTOsanatoriofinochietto.com
A healthcare center offering clinical, surgical, and maternity services with a commitment to patient care, knowledge management, safety, sustainability, and innovation |
1,130 |
| 13 |
Santa Catalina - Neurorehabilitación Clínicasantacatalinaclinica.com
The company is dedicated to improving people's lives through professionalism, compassion, and advanced medical procedures in neurorehabilitation and chronic critical care |
1,095 |
| 14 |
Sanatorio Mater Deisanatoriomaterdei.com.ar
Committed to life and dedicated to serving human dignity, the company is focused on uplifting and supporting individuals |
1,015 |
| 15 |
Avalianavalian.com
Comprehensive healthcare coverage provider in Argentina with over 45 years of experience, supporting individuals and employees in maintaining their health |
1,003 |
| 16 |
Instituto Argentino de Diagnóstico y Tratamiento - IADTiadt.com
Medical institution providing comprehensive healthcare services through modern technology, specialized surgery, diagnostic studies, and 24/7 emergencies for adults and pediatrics |
921 |
| 17 |
Obra Social Union personalunionpersonal.com.ar
The company is responsible for the IT management of a social organization, medical centers, private health plans, and branches across the country |
919 |
| 18 |
IAF (Instituto Alexander Fleming)alexanderfleming.org
A leading private clinic in Argentina and Latin America, offering over 50 medical specialties with a focus on excellence, technology, research, and education |
799 |
| 19 |
Sanatorio Anchorena Recoletasanatorio-anchorena.com.ar
Health institution with top-quality service and technology equipment, led by healthcare professionals |
759 |
| 20 |
Sanatorio Colegialessanatoriocolegiales.com.ar
A healthcare facility with over 50 years of experience in Argentina, offering high-quality medical assistance with advanced technology and a focus on human values |
751 |
| 21 |
Sanatorio Sagrado Corazónsagradocorazon.net.ar
Highly complex hospital providing advanced technology and innovative processes for diagnosis and treatment, prioritizing trust and transparency with patients and families |
667 |
| 22 |
Hospital General de Agudos “Dr. Ignacio Pirovano"buenosaires.gob.ar
A hospital named after Dr Ignacio Pirovano, serving a large population in Buenos Aires with a wide range of medical specialties |
637 |
| 23 |
Centro Gallego de Buenos Airescentrogallegoba.com.ar
A prominent institution representing nearly five million Galicians and their descendants globally, focused on preserving and promoting Galician culture, tradition, and supporting healthcare needs |
612 |
| 24 |
ICBA Instituto Cardiovascularicba.com.ar
A specialized medical center in cardiology focused on providing hope and quality of life to patients with cardiovascular diseases through excellence, innovation, and personalized care |
611 |
| 25 |
OSPe. Obra Social de Petrolerosospesalud.com.ar
Providing health and social protection services to petroleum industry employees, ensuring quality care, personalized attention, and nationwide presence. |
482 |
| 26 |
Clinica Adventista Belgranoclinicaadventista.org
A medical clinic committed to providing advanced technology, high-quality medical care, and holistic attention to patients based on Christian beliefs and values |
469 |
| 27 |
DENTAL TOTALdentaltotal.com.ar
DENTAL TOTAL is a leading network of dental offices in Argentina, dedicated to providing high-quality general, cosmetic, and pediatric dentistry services with a focus on patient satisfaction |
451 |
| 28 |
Hospital Sirio Libanéshospitalsiriolibanes.org
The company was founded in 1916 to provide assistance to Middle Eastern immigrants in Argentina, eventually evolving into a hospital in 1933 |
450 |
| 29 |
RED BASAredbasa.com.ar
The company provides humanized and safe healthcare services to patients, their families, and healthcare personnel |
429 |
| 30 |
Fortaleza
Fortaleza is a health system where users only pay for the services they use, with no waiting periods or age limits, and no monthly fees or administrative costs |
381 |
| 31 |
Fundación Hospitalariafh.org.ar
Since 1966, the Foundation Hospital has provided excellent medical assistance with modern technology and specialists dedicated to maternal, fetal, and pediatric health |
370 |
| 32 |
Hospital Vélez Sarsfield
Founded in 1914, the company operates a General Acute Hospital, providing healthcare services to a population of 150,000 in the Western metropolitan area |
358 |
| 33 |
Hospital Español Buenos Aireshospital-espanol.com.ar
A healthcare institution in Buenos Aires, belonging to a benevolent society, providing protection to society since 1852 through health services Contact for administrative and medical queries |
344 |
| 34 |
ALPI Asociación Civilalpi.org.ar
The company specializes in pediatric and adult rehabilitation, providing diagnosis, treatment, research, and education for neuro-motor conditions and injuries |
311 |
| 35 |
PalCarepalcarehealth.com
PalCare is a Home Care company specializing in Palliative Care for patients with advanced or life-threatening illnesses, offering comprehensive interdisciplinary medical services |
236 |
| 36 |
CIARECweb.ciarec.com.ar
CIAREC is a clinic specializing in acute and subacute patient care, providing top-quality medical attention for adults and children, focusing on holistic rehabilitation |
229 |
| 37 |
ÜMA Salud IAumasalud.com
Health Tech company using AI to develop microservices, enhancing access to healthcare services and empowering doctors to provide more effective care |
185 |
| 38 |
Medical Hairmedicalhair.com.ar
A leading hair recovery clinic in Latin America and Europe specializing in hair restoration treatments and solutions |
162 |
| 39 |
Helios Saludheliossalud.com.ar
Helios Salud specializes in HIV, viral hepatitis, and STIs, offering comprehensive care with a team of highly trained professionals, personalized services, and modern technology |
153 |
| 40 |
Hominis Medicina Prepagahominis.com.ar
A health company offering medical plans focused on prevention and assistance, with a network of branches and access to advanced technology and highly qualified professionals |
149 |
| 41 |
Clínica Basileaclinicabasilea.com.ar
A highly specialized rehabilitation center offering respiratory, neurological, and motor rehabilitation, with long-term mechanical respiratory assistance and specific treatments for sub-acute patients |
148 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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 Oct 10, 2026.
More company lists in Buenos Aires
- The largest companies in Buenos Aires 884
- IT Services and IT Consulting companies in Buenos Aires 60
- Financial Services companies in Buenos Aires 54
- Higher Education companies in Buenos Aires 43
- Government Administration companies in Buenos Aires 32
- Food and Beverage Services companies in Buenos Aires 27
- Retail Apparel and Fashion companies in Buenos Aires 25