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Name: All Medical Specialties: 249 Types of Providers | HealthcareDiscovery.AI
Creator: HealthcareDiscovery.AI
License: https://www.usa.gov/government-works

Data updated monthly · Last refresh September 2026

249 specialties across all 50 states and Washington DC. Choose a specialty to compare provider counts and drug and device payment shares state by state.

Family Medicine (155,557)
Internal Medicine (148,426)
Chiropractor (95,375)
Pediatrics (73,970)
Emergency Medicine (70,805)
Registered Dietitian (68,155)
Anesthesiology (60,491)
Psychiatry (57,713)
Obstetrics & Gynecology (45,611)
Diagnostic Radiology (44,108)
Surgery (33,745)
Acupuncturist (33,449)
Hospitalist (27,952)
Cardiovascular Disease (26,453)
Orthopaedic Surgery (24,733)
Ophthalmology (22,445)
Neurology (21,933)
Gastroenterology (20,668)
Anatomic Pathology & Clinical Pathology (16,235)
Dermatology (15,898)
Physical Medicine & Rehabilitation (15,648)
Pulmonary Disease (15,467)
Urology (14,318)
Hematology & Oncology (13,988)
Nephrology (13,407)
General Practice (12,512)
Otolaryngology (11,304)
Infectious Disease (10,752)
Endocrinology, Diabetes & Metabolism (10,255)
Neurological Surgery (8,641)
Rheumatology (7,963)
Neonatal-Perinatal Medicine (7,711)
Child & Adolescent Psychiatry (7,598)
Interventional Cardiology (7,357)
Naturopath (7,172)
Radiation Oncology (6,913)
Critical Care Medicine (Internal Medicine) (6,413)
Thoracic Surgery (Cardiothoracic Vascular Surgery) (6,362)
Medical Oncology (5,815)
Plastic Surgery (5,726)
Vascular Surgery (5,472)
Vascular & Interventional Radiology (4,812)
Geriatric Medicine (Internal Medicine) (4,600)
Pain Medicine (Anesthesiology) (4,474)
Allergy & Immunology (3,919)
Gynecology (3,789)
Pediatric Hematology & Oncology (3,714)
Nutritionist (3,693)
Pediatric Critical Care Medicine (3,683)
Pediatric Cardiology (3,654)
Clinical Cardiac Electrophysiology (3,573)
Sports Medicine (Orthopaedic Surgery) (3,321)
Maternal & Fetal Medicine (3,275)
Plastic and Reconstructive Surgery (2,980)
Emergency Medical Services (Emergency Medicine) (2,926)
Orthopaedic Hand Surgery (2,894)
Pediatric Emergency Medicine (Pediatrics) (2,868)
Anatomic Pathology (2,829)
Sports Medicine (Family Medicine) (2,779)
Neurology with Special Qualifications in Child Neurology (2,653)
Pediatric Adolescent Medicine (2,637)
Interventional Pain Medicine (2,613)
Occupational Medicine (2,518)
Hospice and Palliative Medicine (Internal Medicine) (2,507)
Pediatric Gastroenterology (2,439)
Colon & Rectal Surgery (2,384)
Adult Medicine (2,275)
Orthopaedic Surgery of the Spine (2,274)
Sports Physician Chiropractor (2,068)
Pediatric Endocrinology (2,066)
Pediatric Anesthesiology (2,021)
Surgical Oncology (1,986)
Surgical Critical Care (1,954)
Gynecologic Oncology (1,892)
Pain Medicine (Physical Medicine & Rehabilitation) (1,886)
Public Health & General Preventive Medicine (1,794)
Reproductive Endocrinology (1,782)
Geriatric Medicine (Family Medicine) (1,743)
Rehabilitation Chiropractor (1,743)
Neuroradiology (1,701)
Nutrition Education Nutritionist (1,597)
Retina Specialist (Ophthalmology) (1,580)
Pediatric Pulmonology (1,536)
MOHS-Micrographic Surgery (1,522)
Pediatric Infectious Diseases (1,511)
Pediatric Surgery (1,489)
Hematology (Internal Medicine) (1,474)
Oral & Maxillofacial Surgery (D.M.D.) (1,456)
Trauma Surgery (1,388)
Obstetrics (1,385)
Adult Reconstructive Orthopaedic Surgery (1,381)
Critical Care Medicine (Anesthesiology) (1,337)
Clinical Pathology/Laboratory Medicine (1,330)
Pediatric Nutrition Registered Dietitian (1,313)
Sports Medicine (Physical Medicine & Rehabilitation) (1,282)
Developmental - Behavioral Pediatrics (1,280)
Pain Medicine (1,240)
Advanced Heart Failure and Transplant Cardiology (1,223)
Sleep Medicine (Internal Medicine) (1,146)
Hospice and Palliative Medicine (Family Medicine) (1,086)
Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) (1,082)
Neuromusculoskeletal Medicine & OMM (1,069)
Pediatric Nephrology (1,031)
Clinical Genetics (M.D.) (1,029)
Transplant Surgery (1,003)
Nutrition Chiropractor (995)
Allergy (982)
Preventive Medicine/Occupational Environmental Medicine (978)
Pediatric Radiology (965)
Body Imaging (958)
Orthopedic Chiropractor (903)
Orthopaedic Trauma (887)
Pediatric Emergency Medicine (Emergency Medicine) (880)
Pediatric Orthopaedic Surgery (862)
Vascular Neurology (862)
Addiction Medicine (Family Medicine) (821)
Orthopaedic Foot and Ankle Surgery (813)
Otolaryngology/Facial Plastic Surgery (791)
Geriatric Psychiatry (781)
Neurology Chiropractor (752)
Pediatric Otolaryngology (750)
Metabolic Nutrition Registered Dietitian (743)
Nuclear Medicine (730)
Plastic Surgery within the Head & Neck (Otolaryngology) (676)
Addiction Psychiatry (665)
Facial Plastic Surgery (660)
Procedural Dermatology (631)
Addiction Medicine (Internal Medicine) (591)
Renal Nutrition Registered Dietitian (591)
Neurocritical Care (585)
Pediatric Rheumatology (585)
Epilepsy (580)
Pediatric Allergy/Immunology (579)
Forensic Pathology (570)
Allergy & Immunology (Internal Medicine) (569)
Cytopathology (531)
Aerospace Medicine (506)
Pediatric Urology (503)
Sleep Medicine (Psychiatry & Neurology) (501)
Clinical Neurophysiology (497)
Dermatopathology (497)
Hematology (Pathology) (483)
Forensic Psychiatry (478)
Dermatopathology (Pathology) (475)
Surgery of the Hand (Surgery) (465)
Pediatric Rehabilitation Medicine (449)
Clinical Pathology (437)
Diagnostic Ultrasound (437)
Glaucoma Specialist (Ophthalmology) (435)
Ophthalmic Plastic and Reconstructive Surgery (435)
Addiction Medicine (Psychiatry & Neurology) (418)
Nuclear Radiology (412)
Blood Banking & Transfusion Medicine (410)
Otology & Neurotology (401)
Sports Medicine (Neuromusculoskeletal Medicine) (369)
Homeopath (362)
Sports Medicine (Emergency Medicine) (351)
Obesity and Weight Management Nutrition Registered Dietitian (348)
Cornea and External Diseases Specialist (347)
Surgery of the Hand (Plastic Surgery) (339)
Internist Chiropractor (325)
Sports Medicine (Internal Medicine) (321)
Pediatric Ophthalmology and Strabismus Specialist (319)
Addiction Medicine (Preventive Medicine) (311)
Psychosomatic Medicine (311)
Neuromuscular Medicine (Psychiatry & Neurology) (300)
Hepatology (299)
Independent Medical Examiner Chiropractor (278)
Transplant Hepatology (271)
Pediatric Hospice and Palliative Medicine (265)
Sleep Medicine (Family Medicine) (262)
Adolescent Medicine (Internal Medicine) (259)
Undersea and Hyperbaric Medicine (Preventive Medicine) (253)
Phlebology (246)
Pediatric Neurodevelopmental Disabilities (241)
Pediatric Sports Medicine (241)
Pediatric Dermatology (233)
Neuropathology (230)
Therapeutic Radiology (230)
Pediatric Chiropractor (224)
Spinal Cord Injury Medicine (224)
Sports Dietetics Nutrition Registered Dietitian (221)
Behavioral Neurology & Neuropsychiatry (219)
Pediatric Pathology (218)
Occupational Health Chiropractor (215)
Hospice and Palliative Medicine (Emergency Medicine) (182)
Clinical Pharmacology (181)
Child Abuse Pediatrics (179)
Pain Medicine (Psychiatry & Neurology) (177)
Neuro-ophthalmology (172)
Medical Toxicology (Emergency Medicine) (169)
Radiology Chiropractor (168)
Urogynecology and Reconstructive Pelvic Surgery (Urology) (166)
Undersea and Hyperbaric Medicine (Emergency Medicine) (162)
Molecular Genetic Pathology (Pathology) (161)
Nuclear Cardiology (151)
Adolescent Medicine (Family Medicine) (146)
Nuclear Imaging & Therapy (143)
Plastic Surgery Within the Head and Neck (Plastic Surgery) (139)
Neuromuscular Medicine (Physical Medicine & Rehabilitation) (135)
Obesity Medicine (Internal Medicine) (130)
Integrative Medicine (124)
Obesity Medicine (Family Medicine) (120)
Pediatric Sleep Medicine (118)
Clinical Molecular Genetics (117)
Sports Medicine (Preventive Medicine) (115)
Adult Congenital Heart Disease (113)
Diagnostic Neuroimaging (Radiology) (110)
Otolaryngic Allergy (109)
Radiological Physics (106)
Independent Medical Examiner (102)
Oncology Nutrition Registered Dietitian (95)
Addiction Medicine (Anesthesiology) (91)
Clinical Cytogenetics (78)
Obesity Medicine (Preventive Medicine) (75)
Complex Family Planning (70)
Brain Injury Medicine (Physical Medicine & Rehabilitation) (65)
Hospice and Palliative Medicine (Physical Medicine & Rehabilitation) (59)
Clinical & Laboratory Immunology (Allergy & Immunology) (56)
Hospice and Palliative Medicine (Obstetrics & Gynecology) (49)
Legal Medicine (M.D./D.O.) (49)
Medical Microbiology (49)
Clinical Biochemical Genetics (47)
Sleep Medicine (Otolaryngology) (43)
Clinical & Laboratory Dermatological Immunology (34)
Pediatric Transplant Hepatology (33)
Gerontological Nutrition Registered Dietitian (32)
Uveitis and Ocular Inflammatory Disease (Ophthalmology) (32)
Neurodevelopmental Disabilities (25)
Hospice and Palliative Medicine (Anesthesiology) (21)
Immunopathology (21)
Thermography Chiropractor (20)
Hospice and Palliative Medicine (Surgery) (17)
Medical Toxicology (Preventive Medicine) (17)
Hospice and Palliative Medicine (Psychiatry & Neurology) (15)
Clinical Informatics (14)
Pediatric Obesity Medicine (12)
Critical Care Medicine (Obstetrics & Gynecology) (11)
Chemical Pathology (9)
Medical Biochemical Genetics (8)
Clinical & Laboratory Immunology (Internal Medicine) (6)
Diagnostic Neuroimaging (Psychiatry & Neurology) (6)
Hypertension Specialist (6)
Magnetic Resonance Imaging (MRI) Internal Medicine (6)
In Vivo & In Vitro Nuclear Medicine (5)
Obesity Medicine (Obstetrics & Gynecology) (4)
Molecular Genetic Pathology (Medical Genetics) (3)
Pediatric Clinical & Laboratory Immunology (3)
Ph.D. Medical Genetics (3)

Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. This directory is informational and not medical advice. How we build this directory.