ME · #40 of 51 by enrolled NPIs

Medicare providers in Maine

17,782 unique NPIs are enrolled in Medicare in Maine, number 40 of 51. Practitioners in the 81 specialties tracked here account for 15,161 of them; the largest is nurse practitioner (2,697), and nurse practitioners outnumber family-practice physicians 2.8 to 1.

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1Enrolled NPIs 17,782
2Largest specialty Nurse Practitioner
3Rank of 51 #40
4Specialties present 81

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

Every specialty in Maine

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

Specialty	ME	Share of US
Nurse Practitioner	2,697	0.7%
Clinical Social Worker	1,565	1.6%
Physician Assistant	1,302	0.8%
Family Practice	960	0.8%
Physical Therapist in Private Practice	831	0.7%
Internal Medicine	735	0.6%
Emergency Medicine	630	1%
Certified Registered Nurse Anesthetist (CRNA)	586	0.9%
Mental Health Counselor	570	0.8%
Anesthesiology	313	0.6%
Pediatric Medicine	310	0.6%
Psychiatry	285	0.8%
Diagnostic Radiology	270	0.7%
Hospitalist	267	0.9%
Chiropractic	252	0.5%
Optometry	251	0.5%
Clinical Psychologist	232	0.6%
Obstetrics/Gynecology	218	0.5%
General Surgery	213	0.8%
Neurology	210	1%
Occupational Therapist in Private Practice	205	0.8%
Orthopedic Surgery	178	0.7%
Cardiovascular Disease (Cardiology)	163	0.7%
Gastroenterology	115	0.6%
Qualified Speech Language Pathologist	105	0.7%
Pulmonary Disease	99	0.7%
Ophthalmology	93	0.5%
Hematology/Oncology	85	0.7%
Registered Dietitian or Nutrition Professional	85	0.8%
Certified Nurse Midwife (Cnm)	85	0.9%
Podiatry	78	0.4%
Qualified Audiologist	72	0.6%
Urology	68	0.6%
Otolaryngology	67	0.6%
Dermatology	63	0.4%
Pathology	61	0.4%
Physical Medicine and Rehabilitation	57	0.5%
Osteopathic Manipulative Medicine	57	5.1%
Nephrology	47	0.4%
Critical Care (Intensivists)	47	0.6%
Dentist	43	0.7%
Infectious Disease	39	0.5%
Rheumatology	38	0.6%
Endocrinology	36	0.4%
Vascular Surgery	36	0.8%
Neurosurgery	35	0.5%
Hospice/Palliative Care	35	1.2%
Geriatric Medicine	30	1.1%
Medical Oncology	28	0.6%
Radiation Oncology	27	0.5%
Interventional Cardiology	25	0.4%
Sports Medicine	22	0.8%
Marriage and Family Therapist	19	0.1%
Interventional Radiology	19	0.5%
Plastic and Reconstructive Surgery	18	0.3%
Cardiac Electrophysiology	17	0.6%
Hand Surgery	15	0.8%
Certified Clinical Nurse Specialist (Cns)	14	0.6%
Thoracic Surgery	13	0.4%
Colorectal Surgery (Proctology)	11	0.5%
Cardiac Surgery	11	0.7%
General Practice	10	0.1%
Allergy/Immunology	9	0.2%
Interventional Pain Management	8	0.4%
Addiction Medicine	8	1%
Surgical Oncology	7	0.4%
Gynecological Oncology	7	0.5%
Hematology	7	0.5%
Pain Management	6	0.2%
Sleep Medicine	6	0.5%
Oral Surgery	5	0.1%
Micrographic Dermatologic Surgery (Mds)	5	0.8%
Neuropsychiatry	5	1.1%
Maxillofacial Surgery	4	0.4%
Other (Non-Physician)	4	1%
Other (Physician)	3	0.6%
Medical Genetics and Genomics	3	0.6%
Advanced Heart Failure and Transplant Cardiology	2	0.2%
Preventive Medicine	2	0.2%
Anesthesiology Assistant	1	0%
Nuclear Medicine	1	0.1%

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