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 120 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. Steven Carr, M.D.Internal Medicine Physician1447208335
  2. William Carr, PH.D.Psychologist1538266788
  3. Mary Carr Reynolds, RNCSAdult Health Nurse Practitioner1366499360
  4. Todd Carranza, M.D.Psychiatry Physician1659313047
  5. Joseph Carrara, PA-CPhysician Assistant1558180448
  6. Idalia Carrasco, LICSWClinical Social Worker1528559341
  7. Ruben Carrasco, MD PHDAnatomic Pathology & Clinical Pathology Physician1427150838
  8. Alice CarrasquilloCounselor1811837313
  9. Olga CarrasquilloCounselor1649526062
  10. Isabella-Mai Carrasquillo-AndersonBehavior Technician1508426701
  11. Matthew Carrea, MDDiagnostic Radiology Physician1497250658
  12. Teresa Carreiro, MA, LMHCMental Health Counselor1033257860
  13. Chrystalle Katte Carreon, M.D.Pediatric Pathology Physician1053609404
  14. Jossie Carreras Tartak, MDEmergency Medicine Physician1619436540
  15. Richard Carrick, MD, PHDClinical Cardiac Electrophysiology Physician1497282057
  16. Abigail Carrier, NPAcute Care Nurse Practitioner1336032275
  17. Charles Carrier, MDOrthopaedic Surgery Physician1295114114
  18. Danielle CarrierClinical Social Worker1154874865
  19. Donald Carrier, LMHCMental Health Counselor1790001592
  20. Kristen Carrier, PHARMDAmbulatory Care Pharmacist1336775436
  21. Natalie Carrier, MSN, FNP-BCFamily Nurse Practitioner1013322668
  22. Robert CarrieroStudent in an Organized Health Care Education/Training Program1689504870
  23. David Carrigan, LCSWClinical Social Worker1649096694
  24. Brittney Carrigan-LaquidaraClinical Social Worker1124805742
  25. Evelyn Carrillo, PHARM DPharmacist1952905119
  26. Amanda Carrington, NP-CFamily Nurse Practitioner1376109116
  27. Peter Carrington, PTAPhysical Therapy Assistant1457567091
  28. Maria Carrion ContrerasStudent in an Organized Health Care Education/Training Program1942159538
  29. Alf Carroll, PA-CMedical Physician Assistant1427507342
  30. Allison CarrollStudent in an Organized Health Care Education/Training Program1184108359
  31. Amanda CarrollStudent in an Organized Health Care Education/Training Program1386490456
  32. Ann Carroll, FNPFamily Nurse Practitioner1578894796
  33. Brett Carroll, MDCardiovascular Disease Physician1669768123
  34. Brittany CarrollSocial Worker1093246084
  35. Bronwen Carroll, MDPediatric Emergency Medicine (Pediatrics) Physician1366578197
  36. Catherine Carroll, NPNurse Practitioner1235511031
  37. Christopher CarrollPhysician Assistant1811764228
  38. Danielle Carroll, M.D.Surgery Physician1932552387
  39. Erin CarrollStudent in an Organized Health Care Education/Training Program1366370520
  40. Haley Carroll, MSStudent in an Organized Health Care Education/Training Program1942738729
  41. Joanne CarrollPediatric Nurse Practitioner1982807681
  42. June Carroll, NPOccupational Health Registered Nurse1275685661
  43. Kaitlin Carroll, NPFamily Nurse Practitioner1720453699
  44. Mary CarrollStudent in an Organized Health Care Education/Training Program1518818228
  45. Meghan Carroll, LCSWClinical Social Worker1417789447
  46. Niamh Carroll, M.D.Internal Medicine Physician1023149069
  47. Ryan Carroll, M.D., M.P.HPediatric Critical Care Medicine Physician1821256876
  48. Sarah Carroll, MS, CGCGenetic Counselor (M.S.)1194351205
  49. Thomas Carroll, MDOtolaryngology Physician1699821280
  50. Katherine Carruthers, M.D.Plastic Surgery Physician1558717017

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.