NPPES file of Aug 9, 2026

Doctors and health care providers in Boston, MA

41,865 individual NPPES records list a practice address in Boston, 1st of 406 Massachusetts cities. The largest group is students in training: 6,126, 15% of the city's records, against 5% across Massachusetts. Page 122 of 838.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in Boston

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Boston in Massachusetts

  • Rank in Massachusetts1st of 406 cities by records
  • Share of the state19.1% of Massachusetts's records
  • Specialties present25 or more taxonomy codes
  • Top three groups24.7% of all records
  • Students in training rank1st of the 10 Massachusetts cities with the most

Compared with Massachusetts as a whole, Boston has 2.9× the state's share of student in an organized health care education/training program records and 0.23× its share of mental health counselor records.

Providers in Boston, alphabetically

  1. Gustavo Carvajal, MDVascular Neurology Physician1184208704
  2. Irma CarvalhoDoula1548095888
  3. Janny CarvalhoBehavior Technician1740914563
  4. Maria Carvalho, LICSWClinical Social Worker1053641480
  5. Paula Carvalho De Abreu-E-Lima, M.D.Anatomic Pathology Physician1376603134
  6. Savio Carvalho Nogueira, MDStudent in an Organized Health Care Education/Training Program1619669298
  7. Carolina Carvalho Soares Valentim, MDOphthalmology Physician1962146704
  8. Catherine Carver, NPNurse Practitioner1679629190
  9. Rachaele Carver, DMDGeneral Practice Dentistry1902994775
  10. Nicole Carville-Autry, N.P.Adult Health Nurse Practitioner1427239912
  11. Ryan Casagranda, D.C.Chiropractor1720397391
  12. Jorge Casal, M.D.Internal Medicine Physician1114976396
  13. Christopher Casale, RPHPharmacist1558663179
  14. Julia CasaleClinical Social Worker1184402125
  15. Sadie Casale, MDStudent in an Organized Health Care Education/Training Program1154171668
  16. Sophia CasaleBehavior Technician1306339148
  17. Bella Casali, NPPediatric Nurse Practitioner1982414934
  18. Fabiana Casanova, M.A.Mental Health Counselor1013340488
  19. Javiera Casas, DDSProsthodontics1962254243
  20. Marta Casas, MAMental Health Counselor1669593984
  21. Colin Casault, MDNeurology Physician1043864291
  22. David Casavant, MDPediatrics Physician1720069990
  23. Amy Casazza, ANP-BCAdult Health Nurse Practitioner1417015835
  24. Vincenzo Casbarro, MS, CCC-SLPSpeech-Language Pathologist1730690710
  25. Brianna Casciello, CNMAdvanced Practice Midwife1811605215
  26. Michael Cascio, LICSWAddiction (Substance Use Disorder) Counselor1043591209
  27. Elizabeth Case, LICSW, PHDClinical Psychologist1427387117
  28. Mackenzie Case, MPAS, PA-CPhysician Assistant1669105961
  29. Siobhan Case, MD, MHSRheumatology Physician1770901639
  30. Alicia CasellaOphthalmology Physician1386347383
  31. Alyshia Casella, FNP-BCFamily Nurse Practitioner1972074136
  32. Tara Casella, CPNPPediatric Nurse Practitioner1518260397
  33. Melynda Casement, PH.D.Psychologist1821305038
  34. Alicia Casey, M.D.Pediatric Pulmonology Physician1366575037
  35. Brenna Casey, MDGastroenterology Physician1730155698
  36. Cherish CaseySocial Worker1689420218
  37. Jacqueline Casey, BSNRegistered Nurse1093473019
  38. Jennifer Casey, ODOptometrist1174574453
  39. Kelly Casey, PH.DForensic Psychologist1326240151
  40. Laurence CaseyCounselor1316587413
  41. Mackenzie Casey, FNP-BC, RNPrimary Care Nurse Practitioner1033897731
  42. Patricia Casey, NNPNeonatal Nurse Practitioner1679773816
  43. Samantha CaseyStudent in an Organized Health Care Education/Training Program1114752003
  44. Samuel CaseyPhysician Assistant1962032946
  45. Elaine Cash, MSWMental Health Counselor1902580046
  46. Sydney Cash, MD PHDNeurology Physician1265415616
  47. Shama Cash-GoldwasserStudent in an Organized Health Care Education/Training Program1174969711
  48. Christopher Cashman, MD, PHDNeurology Physician1881184240
  49. Laurianne Cashman, M.D.Emergency Medicine Physician1851754220
  50. Keila Casillas Claudio, NP-CFamily Nurse Practitioner1679851711

The largest Massachusetts cities

  1. Worcester13,166
  2. Springfield8,553
  3. Cambridge5,145
  4. Brockton4,287
  5. Milford3,459

All of Massachusetts →

How to read this directory

Boston, Massachusetts appears in the CMS National Plan and Provider Enumeration System with 41,865 registered healthcare providers spanning 25 or more distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in Boston - physicians, dentists, nurse practitioners, physician assistants, chiropractors, physical therapists, optometrists, psychologists, podiatrists, and every other credentialed provider type CMS tracks. It does not measure hospital beds, urgent-care capacity, or whether a given clinic is accepting new patients; it measures the pool of professionals with current NPI enrollment and a Boston practice location on file. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2024 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

The provider mix in Boston is weighted toward Student in an Organized Health Care Education/Training Program (6,126 clinicians, followed by Internal Medicine Physician with 2,320 and Clinical Social Worker with 1,906). That distribution reflects how NPPES records specialty: providers self-select a primary taxonomy code, so a family physician who also practices geriatrics will show up under whichever NUCC code they registered first. Relative to Massachusetts's population, Boston reports roughly 598 providers per 100,000 residents using the state-level denominator, which is a rough proxy rather than a precise access-to-care measurement; the true catchment area of any {cityName} clinician extends beyond the municipal boundary.

Of Massachusetts's most common specialties, Counselor is the most prominent one with no provider currently listing a Boston practice address, a coverage gap Boston patients typically fill by traveling to a larger nearby hub.

For Boston patients, this directory is most useful as a starting shortlist. Important: PlainDoctor is a directory of publicly available CMS government data, not a review site, a ranking, or medical advice. NPPES data is self-reported and refreshed monthly; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.

For informational purposes only; this directory is not medical advice and not a substitute for checking a license. See also: how to find a doctor and how to verify one.

Common questions

How many doctors are in Boston, MA?

There are 41,865 registered healthcare providers in Boston, MA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Boston?

The most common specialties in Boston are Student in an Organized Health Care Education/Training Program, Internal Medicine Physician, Clinical Social Worker, Physician Assistant, Anesthesiology Physician. Student in an Organized Health Care Education/Training Program has the most providers with 6,126.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.