Medicare providers in Oklahoma

29,609 unique NPIs are enrolled in Medicare in Oklahoma, number 31 of 51. Practitioners in the 80 specialties tracked here account for 23,334 of them; the largest is nurse practitioner (4,175), and nurse practitioners outnumber family-practice physicians 2.4 to 1.

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1Enrolled NPIs 29,609
2Largest specialty Nurse Practitioner
3Rank of 51 #31
4Specialties present 80

Medicare-enrolled practitioners in Oklahoma by specialty, 15 largest, bars to scale. Source: CMS PPEF, 2026-09-29.

Every specialty in Oklahoma

Each figure is the number of NPIs enrolled in Medicare in Oklahoma under that specialty, beside its share of the specialty's national total.

Specialty	OK	Share of US
Nurse Practitioner	4,175	1.1%
Physician Assistant	2,089	1.2%
Family Practice	1,714	1.5%
Mental Health Counselor	1,578	2.2%
Internal Medicine	1,181	0.9%
Emergency Medicine	1,060	1.6%
Physical Therapist in Private Practice	934	0.8%
Certified Registered Nurse Anesthetist (CRNA)	863	1.4%
Clinical Social Worker	807	0.8%
Optometry	722	1.6%
Anesthesiology	562	1.1%
Diagnostic Radiology	552	1.4%
Chiropractic	541	1.2%
Pediatric Medicine	456	0.8%
Obstetrics/Gynecology	435	1%
Psychiatry	373	1%
Hospitalist	353	1.2%
Neurology	340	1.6%
Orthopedic Surgery	316	1.2%
General Surgery	305	1.1%
Cardiovascular Disease (Cardiology)	207	0.8%
Clinical Psychologist	199	0.5%
Ophthalmology	183	0.9%
Qualified Speech Language Pathologist	168	1.2%
Registered Dietitian or Nutrition Professional	167	1.5%
Gastroenterology	157	0.9%
Qualified Audiologist	145	1.2%
Certified Clinical Nurse Specialist (Cns)	145	6.5%
Nephrology	138	1.2%
Occupational Therapist in Private Practice	137	0.6%
Interventional Cardiology	132	2.3%
Pathology	130	0.9%
Urology	127	1.1%
Dermatology	124	0.8%
Podiatry	123	0.7%
Pulmonary Disease	123	0.9%
Marriage and Family Therapist	118	0.8%
Otolaryngology	107	0.9%
Neurosurgery	97	1.5%
Hematology/Oncology	96	0.8%
Critical Care (Intensivists)	90	1.1%
Physical Medicine and Rehabilitation	84	0.8%
General Practice	74	0.8%
Dentist	67	1.1%
Endocrinology	59	0.7%
Rheumatology	56	0.9%
Radiation Oncology	54	0.9%
Medical Oncology	45	0.9%
Pain Management	45	1.2%
Vascular Surgery	44	1%
Infectious Disease	41	0.5%
Plastic and Reconstructive Surgery	35	0.6%
Interventional Radiology	32	0.9%
Anesthesiology Assistant	31	0.7%
Thoracic Surgery	30	0.8%
Cardiac Electrophysiology	29	1%
Hand Surgery	27	1.4%
Certified Nurse Midwife (Cnm)	26	0.3%
Cardiac Surgery	26	1.5%
Allergy/Immunology	25	0.6%
Sports Medicine	25	0.9%
Colorectal Surgery (Proctology)	23	1.1%
Oral Surgery	20	0.5%
Geriatric Medicine	20	0.8%
Interventional Pain Management	19	1.1%
Gynecological Oncology	15	1.1%
Sleep Medicine	15	1.1%
Advanced Heart Failure and Transplant Cardiology	15	1.4%
Osteopathic Manipulative Medicine	13	1.2%
Hospice/Palliative Care	12	0.4%
Surgical Oncology	11	0.7%
Addiction Medicine	9	1.1%
Preventive Medicine	8	0.8%
Nuclear Medicine	8	1.1%
Micrographic Dermatologic Surgery (Mds)	6	1%
Psychologist Billing Independently	5	0.5%
Medical Genetics and Genomics	5	1.1%
Neuropsychiatry	4	0.9%
Hematology	1	0.1%
Epileptologists	1	0.3%

Source: CMS Medicare Fee-For-Service Public Provider Enrollment, extract of 2026-09-29; unique NPIs per state. Checked 2026-10-24. Methodology.