| # | Company | Employees |
|---|---|---|
| 1 |
The Ohio State University Wexner Medical Centerwexnermedical.osu.edu
Academic medical center providing personalized patient care, medical education, research innovation, and extensive healthcare services across multiple specialties. |
15,993 |
| 2 |
OhioHealthohiohealth.com
A nationally recognized, not-for-profit health system with 14 hospitals and 200+ care sites, focused on improving health and wellbeing |
15,284 |
| 3 |
Nationwide Children's Hospitalnationwidechildrens.org
Provides advanced pediatric medical care, conducts leading research, trains specialists, and offers specialized programs in heart, cancer, and neonatology. |
12,575 |
| 4 |
St. Francis-Emory Healthcaremystfrancis.com
A leading hospital with 376 beds, 2,500+ associates, and 300+ physicians offering inpatient, outpatient, and emergency services, including open-heart surgery and specialized care |
5,251 |
| 5 |
Mount Carmel Health Systemmountcarmelhealth.com
Four hospitals, emergency centers, surgery centers, outpatient facilities, physician offices, and community outreach providing personalized, people-centered healthcare in central Ohio. |
4,778 |
| 6 |
Ohio State University Comprehensive Cancer Center-James Cancer Hospital & Solove Research Institutecancer.osu.edu
Leading cancer research center and hospital focused on integrating research, education, and patient care to advance prevention, detection, and treatment Ranked among top in the nation |
1,970 |
| 7 |
Columbus Regional Health - Columbus, Indianacrh.org
Integrated health system offering extraordinary care in a relationship-based culture, with flagship hospital, network of physicians, and top national rankings in cardiovascular care and patient-centered practices |
1,513 |
| 8 |
Piedmont Columbuspiedmont.org
A leading healthcare provider with two hospitals offering exceptional care, specialized services, and a focus on clinical quality and patient satisfaction |
726 |
| 9 |
Aspirionaspirion.com
A full-service revenue cycle management company specializing in complex claims and denials, including Motor Vehicle Accident, Workers' Compensation, and more |
674 |
| 10 |
National Registry of Emergency Medical Techniciansnremt.org
Established in 1970, this national certification agency sets standards, trains, monitors, and vets emergency medical personnel, certifying over 2 million EMS providers nationwide |
558 |
| 11 |
Homewatch CareGivershomewatchcaregivers.com
Providing personalized and caring services to support families in their time of need |
526 |
| 12 |
Columbus Community Hospitalcolumbushosp.org
A not-for-profit hospital offering acute care services with swing beds, outpatient beds, and accreditation from the Joint Commission since 1972 |
490 |
| 13 |
Equitas Healthequitashealth.com
A nonprofit healthcare system offering LGBTQ+, HIV/AIDS services in multiple states with patient-centered medical, pharmacy, mental health & community health initiatives |
410 |
| 14 |
Buckeye Health Planbuckeyehealthplan.com
A leading managed care plan in Ohio, focused on transforming lives and creating healthier communities through Medicaid, Medicare, and innovative healthcare solutions |
400 |
| 15 |
MSN Healthcare Solutionsmsnllc.com
A national medical billing and practice management company specializing in radiology, anesthesiology, and pathology, guiding physician practices for success since 1996 |
394 |
| 16 |
Summit Home Care & Hospicesummit-ortho.com
Specialty home care agency providing top-quality care with a focus on independence, predictive analytics, telehealth, and rehab services to keep patients out of hospitals |
240 |
| 17 |
Ivim Healthivimhealth.com
This company offers personalized wellness programs with a focus on longevity and promoting a healthy lifestyle |
185 |
| 18 |
Heinzerling Communityheinzerling.org
Providing 24-hour residential care for individuals with severe developmental disabilities, offering personalized therapies and activities to enrich their lives |
183 |
| 19 |
Baptist Memorial Hosp Memphisbaptistonline.org
A renowned hospital in Memphis offering high-quality medical services and care across various specialties |
170 |
| 20 |
MedFlightmedflight.com
A non-profit critical care transport service with helicopter and mobile ICU bases across Ohio, focused on maintaining CAMTS accreditation Follow on social media @MedFlightOhio |
167 |
| 21 |
MedCare Ambulancemedcareambulance.org
Not-for-profit medical transportation service in Ohio, operated by Ohio Medical Transportation, Inc, supporting patients with high quality care |
165 |
| 22 |
Lifeline of Ohiolifelineofohio.org
Facilitation of organ and tissue donation to save and heal lives through the gift of donation and transplantation. |
164 |
| 23 |
Atrium Centersatriumlivingcenters.com
Employee-owned skilled nursing provider offering short-term rehabilitation and long-term care in multiple states, dedicated to compassionate, clinical excellence for residents |
164 |
| 24 | 
Childerns Hospital
Leading children's hospital striving to ensure every child's wellness, ranked #1 by USNews & World Report Dedicated to providing top-quality healthcare |
160 |
| 25 |
Lifetime Dental Healthlifetimedentalcolumbus.com
A dental practice focused on building lifelong relationships based on trust, providing comprehensive dental care for patients and their families |
18 |
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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 9, 2026.
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