Medicare providers in Wisconsin

60,915 unique NPIs are enrolled in Medicare in Wisconsin, number 17 of 51. Practitioners in the 83 specialties tracked here account for 51,439 of them; the largest is nurse practitioner (7,983), and nurse practitioners outnumber family-practice physicians 2.5 to 1.

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1Enrolled NPIs 60,915
2Largest specialty Nurse Practitioner
3Rank of 51 #17
4Specialties present 83

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

Every specialty in Wisconsin

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

Specialty	WI	Share of US
Nurse Practitioner	7,983	2.2%
Physician Assistant	4,463	2.6%
Family Practice	3,184	2.7%
Physical Therapist in Private Practice	2,683	2.4%
Mental Health Counselor	2,377	3.3%
Internal Medicine	2,142	1.7%
Emergency Medicine	2,012	3.1%
Clinical Social Worker	1,898	1.9%
Diagnostic Radiology	1,860	4.9%
Chiropractic	1,747	3.8%
Certified Registered Nurse Anesthetist (CRNA)	1,442	2.3%
Anesthesiology	1,395	2.8%
Pediatric Medicine	1,135	2%
Optometry	1,082	2.3%
Hospitalist	1,066	3.6%
Psychiatry	993	2.7%
Obstetrics/Gynecology	894	2.1%
Clinical Psychologist	841	2.3%
General Surgery	826	3%
Neurology	776	3.6%
Occupational Therapist in Private Practice	775	3.2%
Orthopedic Surgery	705	2.6%
Cardiovascular Disease (Cardiology)	628	2.6%
Gastroenterology	465	2.6%
Ophthalmology	415	2%
Registered Dietitian or Nutrition Professional	373	3.3%
Pathology	364	2.5%
Qualified Speech Language Pathologist	353	2.5%
Hematology/Oncology	337	2.8%
Podiatry	332	1.9%
Pulmonary Disease	322	2.4%
Urology	319	2.7%
Marriage and Family Therapist	302	1.9%
Critical Care (Intensivists)	297	3.7%
Dermatology	291	1.9%
Otolaryngology	285	2.5%
Physical Medicine and Rehabilitation	278	2.5%
Anesthesiology Assistant	267	5.9%
Qualified Audiologist	263	2.2%
Nephrology	261	2.3%
Radiation Oncology	239	4.1%
Certified Nurse Midwife (Cnm)	213	2.2%
Infectious Disease	212	2.5%
Endocrinology	181	2.2%
Interventional Cardiology	181	3.1%
Neurosurgery	171	2.6%
Rheumatology	164	2.6%
Plastic and Reconstructive Surgery	111	1.9%
Interventional Radiology	103	2.8%
Cardiac Electrophysiology	96	3.2%
Thoracic Surgery	94	2.6%
Allergy/Immunology	89	2.1%
Pain Management	86	2.3%
Vascular Surgery	85	1.8%
Hospice/Palliative Care	76	2.6%
Medical Oncology	73	1.4%
Oral Surgery	69	1.9%
Geriatric Medicine	69	2.6%
Cardiac Surgery	68	4%
Sports Medicine	64	2.4%
General Practice	61	0.6%
Dentist	61	1%
Hand Surgery	57	2.9%
Preventive Medicine	50	4.8%
Surgical Oncology	42	2.6%
Gynecological Oncology	35	2.6%
Sleep Medicine	34	2.6%
Interventional Pain Management	30	1.7%
Colorectal Surgery (Proctology)	29	1.4%
Certified Clinical Nurse Specialist (Cns)	25	1.1%
Maxillofacial Surgery	25	2.3%
Advanced Heart Failure and Transplant Cardiology	16	1.5%
Micrographic Dermatologic Surgery (Mds)	15	2.4%
Hematology	14	1.1%
Addiction Medicine	14	1.8%
Nuclear Medicine	14	1.9%
Osteopathic Manipulative Medicine	9	0.8%
Medical Genetics and Genomics	9	1.9%
Neuropsychiatry	8	1.8%
Psychologist Billing Independently	7	0.7%
Other (Non-Physician)	4	1%
Other (Physician)	3	0.6%
Epileptologists	2	0.6%

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