Medicare providers in Indiana

59,614 unique NPIs are enrolled in Medicare in Indiana, number 18 of 51. Practitioners in the 83 specialties tracked here account for 48,428 of them; the largest is nurse practitioner (10,642), and nurse practitioners outnumber family-practice physicians 3.8 to 1.

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1Enrolled NPIs 59,614
2Largest specialty Nurse Practitioner
3Rank of 51 #18
4Specialties present 83

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

Every specialty in Indiana

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

Specialty	IN	Share of US
Nurse Practitioner	10,642	2.9%
Physician Assistant	3,111	1.8%
Family Practice	2,776	2.4%
Clinical Social Worker	2,578	2.6%
Internal Medicine	2,374	1.9%
Physical Therapist in Private Practice	2,174	1.9%
Emergency Medicine	2,018	3.1%
Anesthesiology	1,422	2.8%
Diagnostic Radiology	1,404	3.7%
Optometry	1,341	2.9%
Mental Health Counselor	1,301	1.8%
Certified Registered Nurse Anesthetist (CRNA)	1,298	2.1%
Pediatric Medicine	1,034	1.8%
Obstetrics/Gynecology	1,010	2.4%
Chiropractic	844	1.8%
Orthopedic Surgery	739	2.8%
Hospitalist	716	2.4%
Neurology	696	3.2%
Psychiatry	664	1.8%
General Surgery	661	2.4%
Occupational Therapist in Private Practice	616	2.5%
Cardiovascular Disease (Cardiology)	601	2.4%
Clinical Psychologist	569	1.6%
Podiatry	409	2.3%
Gastroenterology	399	2.2%
Pulmonary Disease	379	2.8%
Pathology	355	2.4%
Ophthalmology	333	1.6%
Qualified Audiologist	327	2.8%
Qualified Speech Language Pathologist	326	2.3%
Nephrology	311	2.8%
Urology	301	2.6%
Otolaryngology	281	2.5%
Hematology/Oncology	280	2.3%
Dermatology	233	1.6%
Physical Medicine and Rehabilitation	221	2%
Anesthesiology Assistant	208	4.6%
Interventional Cardiology	191	3.3%
Infectious Disease	183	2.2%
Critical Care (Intensivists)	183	2.3%
Marriage and Family Therapist	180	1.2%
Registered Dietitian or Nutrition Professional	179	1.6%
Endocrinology	174	2.1%
Certified Nurse Midwife (Cnm)	169	1.7%
Radiation Oncology	168	2.9%
Neurosurgery	153	2.3%
Thoracic Surgery	136	3.7%
Rheumatology	121	1.9%
Plastic and Reconstructive Surgery	119	2%
Vascular Surgery	104	2.2%
Pain Management	103	2.8%
Interventional Radiology	100	2.7%
Cardiac Electrophysiology	96	3.2%
Allergy/Immunology	93	2.2%
Dentist	92	1.5%
Medical Oncology	85	1.7%
Sports Medicine	84	3.2%
General Practice	80	0.9%
Certified Clinical Nurse Specialist (Cns)	78	3.5%
Oral Surgery	63	1.7%
Hospice/Palliative Care	60	2%
Hand Surgery	58	2.9%
Colorectal Surgery (Proctology)	46	2.2%
Interventional Pain Management	40	2.2%
Geriatric Medicine	39	1.5%
Sleep Medicine	39	2.9%
Gynecological Oncology	31	2.3%
Maxillofacial Surgery	31	2.9%
Osteopathic Manipulative Medicine	27	2.4%
Cardiac Surgery	25	1.5%
Surgical Oncology	20	1.2%
Advanced Heart Failure and Transplant Cardiology	20	1.9%
Psychologist Billing Independently	17	1.7%
Addiction Medicine	15	1.9%
Preventive Medicine	14	1.3%
Medical Genetics and Genomics	13	2.8%
Hematology	12	0.9%
Neuropsychiatry	12	2.8%
Micrographic Dermatologic Surgery (Mds)	8	1.3%
Epileptologists	5	1.4%
Nuclear Medicine	4	0.5%
Other (Physician)	3	0.6%
Other (Non-Physician)	3	0.8%

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