| # | Company | Employees |
|---|---|---|
| 1 |
INTEGRIS Healthintegrishealth.org
Largest Oklahoma-owned health system offering hospitals, clinics, rehabilitation, mental health, fitness, home health, and urgent care services statewide. |
6,623 |
| 2 |
Saint Francis Health Systemsaintfrancis.com
Integrated health system in Tulsa offering extensive healthcare services through multiple hospitals, clinics, and specialized care centers across Oklahoma. |
4,699 |
| 3 |
Hillcrest HealthCare Systemhillcrest.com
Healthcare system serving northeastern Oklahoma with 9 hospitals, 2 physician groups, 6,250 employees, 322 providers, and treating nearly 150,000 patients annually |
4,055 |
| 4 |
OU Healthouhealth.com
Comprehensive academic health system in Oklahoma with hospitals, clinics, and specialty care, including the state's only freestanding children's hospital and cancer center |
3,571 |
| 5 |
Norman Regional Health Systemnormanregional.com
A multi-campus health system in south central Oklahoma offering acute care, physician services, outpatient diagnostics, medical transport, and wellness services |
1,844 |
| 6 |
Oklahoma Heart Hospitalokheart.com
A physician-owned hospital in Oklahoma, designed by cardiologists to provide expert, individualized care with utmost comfort in a digital environment |
1,354 |
| 7 |
Comanche County Memorial Hospitalccmhhealth.com
Independent, non-profit acute care facility in Southwest Oklahoma, providing award-winning care with 283 beds, 2,000 employees, 250 physicians, and 100 volunteers |
1,057 |
| 8 |
Oklahoma Children's Hospital OU Healthouhealth.com
Innovative children's healthcare provider at OU Health, providing advanced research and treatments through hospital and outpatient services |
999 |
| 9 |
Crossroads Hospicecrossroadshospice.com
A national leader in hospice and palliative care, dedicated to providing innovative and compassionate support for patients and families facing serious illnesses or end-of-life care |
976 |
| 10 |
Stillwater Medical Centerstillwater-medical.org
A 117-bed acute care hospital in north central Oklahoma offering a wide range of medical services with a focus on quality care and patient satisfaction |
896 |
| 11 |
Ascension St. Johnhealthcare.ascension.org
Faith-based healthcare organization with hospitals, clinics, and facilities providing compassionate care to all, with special focus on persons in poverty |
805 |
| 12 |
SYNERGY HomeCaresynergyhomecare.com
SYNERGY HomeCare provides a range of compassionate in-home care services tailored to individuals' needs, enhancing their lives and promoting overall well-being |
773 |
| 13 |
Oxford HealthCareoxford-healthcare.com
A leading home healthcare provider in Tulsa offering comprehensive medical treatment and solutions for elderly and disabled individuals in the comfort of their homes |
767 |
| 14 |
Grady Memorial Hospital, Oklahomagradymem.org
A full-service hospital offering diagnostic, medical, surgical, and outpatient care with a 24/7 emergency center staffed by trained physicians and nurses |
654 |
| 15 |
Our Blood Instituteobi.org
A large nonprofit blood center providing blood for patients at over 240 hospitals in Oklahoma, Arkansas, and Texas |
558 |
| 16 |
CareATCcareatc.com
Providing customizable healthcare solutions to employers, CareATC improves workforce health, reduces healthcare costs, and connects patients with providers efficiently |
549 |
| 17 |
Bethany Children's Health Centerbethanychildrens.org
A pediatric rehabilitation hospital providing 24-hour complex care to children ages 0-21, offering inpatient and outpatient services with a multidisciplinary team |
479 |
| 18 |
Dental Depotdentaldepot.net
Family-owned dental practice prioritizing patient care with a focus on quality dentistry, business knowledge, and collaboration in a unique train station-themed environment |
473 |
| 19 |
OU Health Stephenson Cancer Centerouhealth.com
A nationally recognized academic cancer center in Oklahoma conducting innovative research and providing top-notch patient care in collaboration with leading organizations |
465 |
| 20 |
Good Shepherd Hospicegoodshepherdhospice.com
A provider of compassionate hospice care, offering exceptional support and resources for patients, families, and staff members in multiple states |
423 |
| 21 |
Muscogee Nation Department of Healthcreekhealth.org
Operates hospitals, clinics, rehabilitation centers serving tribal citizens and public, expanding healthcare facilities across multiple Oklahoma locations for Native people. |
401 |
| 22 |
Loving Carelovingcarehealth.com
Leading home care provider in Oklahoma since 1997, offering innovative technology, data analytics, and patient-centered approach to enhance clients' lives |
400 |
| 23 |
Grace Living Centersgracelivingcenters.com
The company provides skilled nursing, therapy, and long-term care services in Oklahoma, with a focus on quality care and rehabilitation |
387 |
| 24 |
Oklahoma State University Medical Centerosumc.com
Largest osteopathic teaching hospital in Tulsa with multiple residency and fellowship programs training over 150 physicians annually. |
385 |
| 25 |
McAlester Regional Health Centermrhcok.com
A not-for-profit healthcare facility in McAlester, Southeastern Oklahoma, providing a wide range of medical specialties and services to the community |
383 |
| 26 |
St. Mary's Regional Medical Centerstmarysregional.com
A comprehensive medical center in Enid, Oklahoma offering specialized services in cardiac, neurosciences, orthopedics, women's health, emergency medicine, and rehabilitation |
378 |
| 27 |
Montereaumontereau.net
A locally owned, not-for-profit retirement community in Tulsa offering Independent Living, Life Care, and highly rated Short- and Long-Term Care services |
350 |
| 28 |
Oklahoma Surgical Hospitaloklahomasurgicalhospital.com
This hospital was founded by local physicians to prioritize patient needs and deliver high-quality, personalized medical care in a comfortable environment |
342 |
| 29 |
Variety Carevarietycare.org
Oklahoma's largest community health center, offering affordable and accessible primary medical, dental, vision, behavioral care, women's health, and teen services Leading the way in healthcare |
335 |
| 30 |
Senior Starseniorstar.com
A family-owned company passionate about serving seniors, providing vibrant communities with personalized living and care options, and valuing their associates |
328 |
| 31 |
Murray County Schoolsmurray.k12.ga.us
Manages and operates public K-12 schools, providing comprehensive education, student support, curriculum, and community engagement for academic and personal growth. |
307 |
| 32 |
Jackson County Memorial Hospitaljcmh.com
A not-for-profit hospital in Altus, Oklahoma, offering health care services to enhance the well-being of residents, governed by a nine-member Board of Trustees |
258 |
| 33 |
OU Nursing - Life Stage Solutionsoulifestagesolutions.com
Specializing in elder care solutions, we offer collaborative assessment, coordination, education, and management of healthcare services for seniors and individuals with disabilities |
209 |
| 34 |
Hillcrest Hospital Southhillcrestsouth.com
A 180-bed acute care medical center in South Tulsa offering a wide range of inpatient and outpatient services, with a focus on family health |
186 |
| 35 |
Milestone Retirementmilestoneretirement.com
The company re-imagines aging through vibrant living experiences and operational excellence in the senior living industry, focusing on compassion, innovation, and accountability |
185 |
| 36 |
Arbor House Assisted Livingarborhouseliving.com
Providing independent living, assisted living, and memory care services for individuals with dementia and Alzheimer's in Oklahoma and Texas |
181 |
| 37 |
Diagnostic Laboratory of Oklahomadlolab.com
Oklahoma-based medical laboratory offering high-quality testing and services through affiliation with Quest Diagnostics, personalized care, and convenient patient locations |
173 |
| 38 |
Regional Medical Laboratorylabcorp.com
A hospital & health care company based in Bartlesville, Oklahoma, providing regional medical laboratory services to patients in the United States |
152 |
| 39 |
In His Imageinhisimage.org
In His Image Family Medicine Residency trains physicians to provide holistic healthcare, improve health, bring hope, and serve God through medicine |
152 |
| 40 |
Brookhaven Hospitaltraumaticbraininjury.net
A health center in Tulsa, Oklahoma providing neurobehavioral rehabilitation, dual-diagnosis programs, outpatient services, and transitional living options for behavioral health and neurologic disorders |
147 |
| 41 |
Bridges Healthbridgesok.com
Employee-owned skilled nursing & therapy facility management company in Oklahoma, providing vital healthcare services and investing in employees' futures through retirement plans and ESOPs |
147 |
| 42 |
Absentee Shawnee Tribal Health Systemasthealth.org
Provider of choice for comprehensive health services, promoting continuous quality improvement, culturally-sensitive care for tribal citizens and AI/AN's, emphasizing holistic practices |
146 |
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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.
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- Education providers in Oklahoma 42
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- Financial services firms in Oklahoma 32
- Public sector organisations in Oklahoma 29
- Government Administration companies in Oklahoma 25
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 Illinois 274
- 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 New York 119
- Hospitals and Health Care companies in Chicago 96