| # | Company | Employees |
|---|---|---|
| 1 |
Abbottabbott.com
A global healthcare leader offering life-changing technologies in diagnostics, medical devices, nutrition, and generic medicines, with over 115,000 colleagues serving in 160+ countries |
140,778 |
| 2 |
GE HealthCaregehealthcare.com
Global medical technology and digital solutions innovator leveraging intelligent devices, data analytics, and artificial intelligence to drive precision health and improve patient outcomes worldwide |
60,041 |
| 3 |
CommonSpirit Healthcommonspirit.careers
Building a healthier future for all through integrated health services, delivering patient encounters via clinics, care sites, hospitals, home-based services, and virtual care. |
48,074 |
| 4 | 22,635 | |
| 5 |
Health Care Service Corporationhcsc.com
Provides health coverage for employers, individuals, and families, including Medicare and Medicaid plans, plus related health care products and services. |
21,090 |
| 6 |
Endeavor Healthendeavorhealth.org
Endeavor Health is a healthcare system in Illinois, uniting multiple hospitals to provide personalized patient experiences and world-class care |
16,454 |
| 7 |
Northwestern Medicinenm.org
Academic medical center combining research, teaching, and patient care with a large workforce across numerous regional locations and top-ranked hospitals. |
16,181 |
| 8 |
Rush University Medical Centerrush.edu
Academic medical center with hospital, health center, university offering medical, nursing education, research, residency programs, and community outreach services. |
12,484 |
| 9 |
OSF HealthCareosfhealthcare.org
Integrated health system with hospitals, home care, nursing colleges, digital health services, philanthropic foundation, and healthcare innovation investments. |
12,433 |
| 10 |
Hospital Sisters Health Systemhshs.org
Multi-institutional health system providing integrated, patient-centered care through hospitals, clinics, and physician partners in Illinois and Wisconsin. |
11,854 |
| 11 |
Advocate Health Careadvocatehealth.com
Integrated nonprofit health system providing clinical innovation, specialized care, extensive research, education, and community benefits across multiple U.S. states. |
11,676 |
| 12 |
Help at Homehelpathome.com
Providing person-centered home care services for seniors and individuals with disabilities, creating meaningful moments and driving high-quality outcomes in multiple states |
10,421 |
| 13 |
Aspen Dentalcareers.aspendental.com
Provides dental care and supports healthcare brands through a parent company, aiming for broader access and improved patient well-being nationwide. |
9,615 |
| 14 |
Northwestern Memorial Hospitalnmh.org
A collaboration between healthcare and university partners, Northwestern Medicine aims to transform healthcare through research, teaching, and patient care excellence |
7,371 |
| 15 |
Select Rehabilitationselectrehab.com
A leading provider of therapy services nationwide, employing thousands of licensed professionals in various clinical settings to improve patient outcomes and quality of life |
7,304 |
| 16 |
Ann & Robert H. Lurie Children's Hospital of Chicagoluriechildrens.org
Largest pediatric healthcare provider in the region, teaching partner of Northwestern University, nationally ranked in all pediatric specialties. |
7,202 |
| 17 |
Evernorth Health Servicesevernorth.com
Provider of adaptable pharmacy, care, and benefit services aiming to advance organizations and individuals through connected solutions |
7,188 |
| 18 |
Carle Healthcarle.org
Integrated healthcare system combining clinical care, insurance, research, education, and philanthropy to improve patient outcomes and community health. |
6,896 |
| 19 |
Heartland Dentalheartland.com
Provides world-class non-clinical administrative support to supported dentists, hygienists, and non-clinical team members, enabling focus on great dentistry and patient care. |
6,890 |
| 20 |
Stericyclelinktr.ee
A leading compliance company providing essential services for proper disposal of medical waste and confidential information, protecting client relationships and the environment |
6,777 |
| 21 |
BrightStar Carebrightstarcare.com
A healthcare staffing agency providing medical and non-medical homecare services to clients of all ages, along with supplemental healthcare staff to corporate clients |
6,409 |
| 22 |
NorthShore University HealthSystemendeavorhealth.org
Integrated health system delivering personal patient care, convenient access, and pioneering medical services across multiple hospitals and clinics in Illinois. |
5,857 |
| 23 |
AMITA Healthadventhealth.com
Leading healthcare network in Illinois with 19 hospitals, 230+ outpatient sites, and a large provider network offering excellent care close to home |
5,689 |
| 24 |
Oak Street Health, part of CVS Healthoakstreethealth.com
Network of primary care centers focusing on personalized, value-based preventive care for older adults on Medicare across communities. |
5,183 |
| 25 |
Option Care Healthoptioncarehealth.com
Largest independent provider of home and alternate site infusion services, delivering compassionate care for acute and chronic patients nationwide. |
5,074 |
| 26 |
Edward Hospitalendeavorhealth.org
United healthcare system focused on personal patient experiences, convenient access to world-class care, serving communities with hospitals and clinics. |
4,168 |
| 27 |
Presence Healthpresencehealth.org
A healthcare system in Illinois with 19 hospitals and over 230 sites, providing care to 43 million residents in the Chicagoland area |
4,089 |
| 28 |
Memorial Healthjobs.memorial.health
Leading healthcare organization in Illinois, providing state-of-the-art affiliates, dedicated to excellence in care, education, and research with a focus on employee development and national prominence |
4,012 |
| 29 |
Mercyhealth Wisconsin and Illinoismercyhealthsystem.org
Integrated health system providing world-class healthcare close to home, offering hospital, clinic, post-acute, and retail services with a commitment to making lives better |
3,927 |
| 30 |
Edward-Elmhurst Healthendeavorhealth.org
A unified health system in Illinois dedicated to providing personalized patient care and convenient access to world-class healthcare services |
3,425 |
| 31 |
RehabCareselectrehab.com
A trusted partner in rehab and wellness care, providing quality outcomes, clinical leadership, and regulatory compliance for providers to succeed |
3,167 |
| 32 |
Duly Health and Caredulyhealthandcare.com
Duly Health and Care is a leading medical group focused on helping individuals achieve their extraordinary health potential with over 900 physicians |
3,131 |
| 33 |
Hospital 2020med2020.org
Promoting global hospital transformation through advocacy, education, and collaboration to enhance safety, sustainability, innovation, and international cooperation in healthcare settings |
2,921 |
| 34 |
UI Healthhospital.uillinois.edu
This academic health enterprise in Illinois offers comprehensive care, education, and research to promote health equity and train healthcare leaders |
2,813 |
| 35 | 2,747 | |
| 36 |
Loyola Medicineloyolamedicine.org
Integrated academic medicine provider with advanced technology, expert clinicians, and renowned centers for heart disease, cancer, organ transplant, orthopaedics, and neurological disorders |
2,653 |
| 37 |
HSHS St. John's Hospitalhshs.org
Regional medical center with 439 beds serving Central and Southern Illinois Part of a health care ministry with 14 hospitals, offering a high standard of care |
2,614 |
| 38 |
Advocate Christ Medical Center
A premier teaching hospital in Illinois with top-notch specialties in cancer care, cardiovascular services, transplantation, neurosciences, orthopedics, and women's health |
2,546 |
| 39 |
St. Joseph's Hospitalhshs.org
Healthcare facility in Clinton County offering inpatient, obstetric, surgical, and outpatient care, along with a state-of-the-art HealthPlex/YMCA for fitness and rehabilitation therapies |
2,435 |
| 40 |
Vijobs.viliving.com
The company develops and operates exclusive CCRCs in desirable locations, committed to enhancing residents' lives and investing in employees' development |
2,427 |
| 41 |
Elmhurst Hospitalendeavorhealth.org
Endeavor Health provides a personalized patient experience and convenient access to world-class healthcare through a collaboration of several healthcare facilities |
2,255 |
| 42 |
Advocate Lutheran General Hospitaladvocatehealth.com
A top-ranked teaching hospital in Chicago with specialized pediatric care, trauma center, surgical excellence, stroke care, and nursing excellence |
2,185 |
| 43 |
Shirley Ryan AbilityLabsralab.org
Specializes in treating severe physical disabilities through integrated clinical care and research, improving recovery for complex conditions. |
2,124 |
| 44 |
Cook County Healthcookcountyhealth.org
Cook County Health provides comprehensive medical services for over 500,000 people annually in Chicago and suburban Cook County, regardless of ability to pay |
2,094 |
| 45 |
Private Home Careprivatehomecare.com
The company is dedicated to providing high-quality home care services, matching clients with caregivers, emphasizing trust, and challenging the status quo in the industry |
2,068 |
| 46 |
UHCvizientinc.com
A healthcare consortium focused on accelerating innovation for members, uniting trusted leaders to address industry's pressing topics |
2,018 |
| 47 |
Northwest Community Healthcareendeavorhealth.org
Endeavor Health is a united healthcare system providing personalized patient experiences and world-class care through convenient access and collaboration #OurEndeavor |
1,916 |
| 48 |
Southern Illinois Healthcaresih.net
A not-for-profit health system in southern Illinois with hospitals, a cancer center, trauma center, outpatient practices, and a commitment to community well-being |
1,894 |
| 49 |
Springfield Clinicspringfieldclinic.com
Providing high-quality primary and specialized healthcare with advanced treatments and technologies, serving central Illinois communities with compassionate care. |
1,891 |
| 50 |
Swedish Hospitalswedishcovenant.org
Endeavor Health is a unified healthcare system providing personalized patient experiences and world-class care through collaboration between multiple hospitals |
1,862 |
| 51 |
Advocate Condell Medical Centeradvocatehealth.com
A leading medical center in the north suburbs providing high quality care for over 80 years, advocating for respectful engagement on social media |
1,858 |
| 52 |
Veradigmยฎveradigm.com
An integrated data solutions provider dedicated to improving healthcare by offering actionable tools and insights to various stakeholders in the industry |
1,854 |
| 53 |
Northwestern Medicine Central DuPage Hospitalcdh.org
A top-rated acute-care hospital in Winfield, IL providing quality healthcare services and nursing excellence to DuPage county residents and beyond |
1,852 |
| 54 |
Sinai Chicagosinaichicago.org
Committed to improving the health of diverse communities in Chicago, offering a range of inpatient/outpatient services, research programs, and social services |
1,851 |
| 55 |
Silver Cross Hospitalsilvercross.org
A leading healthcare provider offering quality and compassionate care through a modern facility, extensive medical staff, and advanced treatment options |
1,815 |
| 56 |
Blessing Healthblessinghealth.org
An integrated health system with hospitals, provider groups, specialty businesses, nursing college, and charitable foundation providing high-quality care to communities |
1,758 |
| 57 |
The Aspen Groupteamtag.com
Supports providers across dental, medical aesthetics, urgent care, and veterinary medicine, empowering clinicians and expanding access to high-quality care nationwide through various brands and education. |
1,697 |
| 58 |
VillageMDvillagemd.com
The company provides accessible healthcare services through primary, multi-specialty, and urgent care providers in various settings to improve patient outcomes and reduce healthcare costs |
1,683 |
| 59 |
Joint Commissionjointcommission.org
The company evaluates and accredits over 20,000 health care organizations in the US to ensure quality and safety standards are met |
1,670 |
| 60 |
American Hospital Associationaha.org
National organization representing hospitals, health care networks, and patients Advocates for members in health policy, legislative debates, and regulatory matters Visit website for more information |
1,614 |
| 61 |
SIU Medicinesiumed.edu
A leading medical school and clinical provider offering innovative medical education, research, and quality health care in diverse work environments |
1,597 |
| 62 |
Senior Lifestyleseniorlifestyle.com
A family-owned business based in Chicago dedicated to serving seniors through a variety of living options and innovative life enrichment programs |
1,587 |
| 63 |
Rush Copley Medical Centerrush.edu
Provides quality healthcare services to residents, with 210 beds, 500 physicians, and an academic connection to Rush University System for Health. |
1,558 |
| 64 |
Riverside Healthcareriversidehealthcare.org
Integrated healthcare system providing inpatient and outpatient care, senior living communities, fundraising, fitness center, counseling programs, pharmacy services, and career opportunities in various healthcare fields |
1,538 |
| 65 |
DuPage Medical Groupdulyhealthandcare.com
Duly Health and Care is a multi-specialty medical group focused on helping individuals achieve extraordinary health and wellness through personalized care |
1,488 |
| 66 |
Assembly Healthassembly.health
A healthcare services company specializing in revenue cycle management and back-office support for long-term care communities and physician groups nationwide |
1,442 |
| 67 |
Aperion Careaperioncare.com
Aperion Care is seeking compassionate caregivers to support guest well-being and recovery through a holistic approach beyond medical care |
1,425 |
| 68 |
Abbott Nutrition Health Institute (ANHI)anhi.org
A platform offering over 150 free accredited courses for healthcare professionals on nutrition topics to improve patient outcomes and global health |
1,416 |
| 69 |
Superior Ambulance Servicesuperiorambulance.com
A family-owned EMS provider with over 1600 employees and 200 ambulances, offering services in Illinois, Indiana, and Michigan since 1959 |
1,398 |
| 70 |
Illinois Bone & Joint Instituteibji.com
Specializing in orthopedic and sports medicine care, offering on-site therapy, MRI services, and expert physicians in the Chicagoland area for advanced compassionate treatment |
1,336 |
| 71 |
WellNow Urgent Carewellnow.com
A rapidly expanding provider of urgent medical care, virtual care, occupational health services, and clinical research with over 200 centers in multiple states |
1,320 |
| 72 |
UW Health SwedishAmericancareers.uwhealth.org
A healthcare system in Wisconsin providing medical innovation and quality care to patients in Northern Illinois with access to UW Health experts |
1,314 |
| 73 |
Medcormedcor.com
This company simplifies healthcare for employers by providing the right level of care at the right time and place to reduce costs and improve outcomes |
1,303 |
| 74 |
Seasons Hospice & Palliative Careaccentcare.com
This company provides care services and has moved to a new LinkedIn page Follow them at wwwlinkedincom/companyaccentcare |
1,302 |
| 75 |
College of American Pathologists (CAP)cap.org
An organization of pathologists dedicated to excellence in pathology and laboratory medicine, advocating for health advancements and shaping the future of healthcare |
1,297 |
| 76 |
Enlivant
Enlivant provided high-quality, compassionate care to seniors across the US but has transitioned operations to new operators as of September 2023 |
1,272 |
| 77 |
St. Elizabeth's Hospitalhshs.org
This state-of-the-art hospital and care center in Illinois provides accessible, patient-focused care through an integrated delivery model, guided by a Franciscan healing mission |
1,244 |
| 78 |
Advocate Illinois Masonic Medical Centeradvocatehealth.com
A Chicago-based 408-bed hospital offering comprehensive inpatient and outpatient medical services, including trauma care and neonatal intensive care |
1,237 |
| 79 |
Sarah Bush Lincolnsarahbush.org
A non-profit healthcare organization in Illinois with two hospitals, multiple clinics, advanced technology, engaged staff, community involvement, and commitment to excellence |
1,217 |
| 80 |
UChicago Medicine Ingalls Memorialuchicagomedicine.org
A century of pioneering clinical care and comprehensive outpatient centers with a focus on improving community health and partnering with UChicago Medicine |
1,197 |
| 81 |
Little Company of Mary Hospitalosfhealthcare.org
A not-for-profit Catholic hospital providing surgical, inpatient, and outpatient care with a deep-rooted compassion for patients' well-being and spiritual healing |
1,193 |
| 82 |
Gateway Foundationgatewayfoundation.org
A nonprofit organization providing substance use disorder treatment, specializing in personalized programs to address underlying causes of addiction and mental health disorders |
1,188 |
| 83 |
Enfermeraenfermera.care
A company that offers nursing advice and education to SMEs, private equity firms, multinationals, and families through a network of nurse case managers in North America |
1,176 |
| 84 |
Advocate Medical Groupadvocatehealth.com
Integrated medical group in the Chicagoland area with primary care, specialty services, imaging, and community-based practices, committed to delivering outstanding healthcare outcomes and service |
1,152 |
| 85 |
Daniels Healthdanielshealth.com
A global leader in healthcare innovation, providing safer solutions for medical waste management, with a focus on sustainability and staff safety |
1,064 |
| 86 |
Northwestern Medicine Catherine Gratz Griffin Lake Forest Hospitallfh.org
A 201-bed community hospital part of Northwestern Medicine with 700 physicians, offering 90 medical specialties and recognized for nursing excellence |
1,038 |
| 87 | 1,037 | |
| 88 |
Resurrection Health Carepresencehealth.org
A Catholic health system in Illinois with 12 hospitals, 27 long-term care facilities, physician offices, home care, hospice, and behavioral health services |
1,033 |
| 89 |
Advocate Children's Hospitaladvocatechildrenshospital.com
A leading pediatric hospital offering specialized care through a team of pediatricians, subspecialists, and advanced critical care services in the Chicago area |
998 |
| 90 |
MedSpeedmedspeed.com
Leading the way in healthcare transportation, this company helps organizations operate more effectively by providing intra-company logistics and transportation services |
986 |
| 91 |
Palos Healthnm.org
A healthcare provider in the Chicago suburbs with over 40 years of experience, focused on quality, respect, and trust in patient care |
980 |
| 92 | 953 | |
| 93 |
Saint Anthony Hospitalsahchicago.org
Independent community hospital in Chicago's southwest side offering medical care, social services, and outreach programs to residents regardless of nationality or ability to pay |
948 |
| 94 |
Access Community Health Networkachn.net
A large network of federally-qualified health centers in Chicagoland area providing patient-centered, preventive, and primary care services to over 170,000 patients annually |
936 |
| 95 |
Impact Advisorsimpact-advisors.com
Healthcare management consulting firm solving industry challenges with team of experts, quality solutions, and measurable value Award-winning and innovative culture |
927 |
| 96 |
MacNeal Hospitalloyolamedicine.org
Providing quality, patient-centered care with inpatient, outpatient, and surgical services in the near west and southwest suburbs Values include quality, integrity, service, innovation, and transparency |
918 |
| 97 |
Centegra Health Systemnm.org
A health system recently acquired by Northwestern Medicine offering professional development and employment opportunities in healthcare Visit nmorg for more |
883 |
| 98 |
Decatur Memorial Hospitaljobs.memorial.health
A private, not-for-profit hospital in Central Illinois providing outstanding medical services, supported by philanthropic contributions and state-of-the-art technology for proven quality healthcare |
874 |
| 99 |
Village Medicallinktr.ee
This company provides primary care services through traditional free-standing clinics, Village Medical at Walgreens clinics, at-home visits, and telehealth appointments |
849 |
| 100 |
CGH Medical Centercghmc.com
Progressive acute care facility offering inpatient and outpatient services, diagnostic imaging, specialized departments, clinics, and an emergency department in Northern Illinois |
826 |
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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 24, 2026.
More company lists in Illinois
- The largest companies in Illinois 4,175
- Financial services firms in Illinois 267
- Manufacturers in Illinois 254
- IT Services and IT Consulting companies in Illinois 230
- Financial Services companies in Illinois 203
- Transportation, Logistics, Supply Chain and Storage companies in Illinois 195
- Critical infrastructure operators in Illinois 178
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- SaaS companies in Illinois 172
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- Consulting firms in Illinois 96
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The same list elsewhere in United States
- Hospitals and Health Care companies in the United States 5,419
- Hospitals and Health Care companies in California 519
- Hospitals and Health Care companies in Texas 410
- Hospitals and Health Care companies in New York State 392
- Hospitals and Health Care companies in Florida 346
- Hospitals and Health Care companies in Pennsylvania 238
- Hospitals and Health Care companies in Massachusetts 193
- Hospitals and Health Care companies in Tennessee 189
- Hospitals and Health Care companies in Ohio 180
- Hospitals and Health Care companies in North Carolina 156
- Hospitals and Health Care companies in New Jersey 143
- Hospitals and Health Care companies in Georgia 142
- Hospitals and Health Care companies in Michigan 142
- Hospitals and Health Care companies in Virginia 120
- Hospitals and Health Care companies in Missouri 118
- Hospitals and Health Care companies in Minnesota 117
- Hospitals and Health Care companies in Indiana 116
- Hospitals and Health Care companies in Maryland 113
- Hospitals and Health Care companies in Colorado 111
- Hospitals and Health Care companies in Arizona 105
- Hospitals and Health Care companies in Washington State 104
- Hospitals and Health Care companies in Wisconsin 94
- Hospitals and Health Care companies in New York 119
- Hospitals and Health Care companies in Chicago 96