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 311 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. Daniel Harrison, MDNeurology Physician1508356809
  2. David Harrison, M.D.Obstetrics & Gynecology Physician1801879200
  3. Diana Harrison, PT, DPTPediatric Physical Therapist1114235306
  4. Gabriele Harrison, CPNPPediatric Nurse Practitioner1023241007
  5. Howard Harrison, ODOptometrist1023063781
  6. Jermai Harrison, LMHC, LCMHCMental Health Counselor1881180255
  7. Jon Harrison, MDSurgery Physician1235588351
  8. Keisha HarrisonBehavior Technician1891589867
  9. Laura Harrison, MDInternal Medicine Physician1215516711
  10. Moira Harrison, MSW, LCSWClinical Social Worker1083276125
  11. Sarah Harrison, PA-CPhysician Assistant1518472083
  12. Sarah Harrison, MDInternal Medicine Physician1417659178
  13. Theresa Harrison, LICSWClinical Social Worker1508343260
  14. Alexia Harrist, M.D.Pediatrics Physician1609190347
  15. Maggie Harrity, NPFamily Nurse Practitioner1467973073
  16. George Harrold, MDNeurology Physician1497275622
  17. Lauren Harshman, MDMedical Oncology Physician1689856684
  18. Elizabeth Harstad, M.D.Developmental - Behavioral Pediatrics Physician1124297445
  19. Alexis Hart, D.M.D.General Practice Dentistry1902923105
  20. Chloe HartBehavior Technician1235877481
  21. Courtney Hart, PA-CPhysician Assistant1174286330
  22. Edward HartStudent in an Organized Health Care Education/Training Program1336995430
  23. Elizabeth Hart, M.D.Pediatrics Physician1730378159
  24. Elspeth Ashley Hart, PA-C, ATCPhysician Assistant1730562588
  25. Geoffrey Hart, M.D.Anesthesiology Physician1164406419
  26. Kamber Hart, MDStudent in an Organized Health Care Education/Training Program1184484925
  27. Logan HartStudent in an Organized Health Care Education/Training Program1619737723
  28. Morgan Hart, DPTPhysical Therapist1053016196
  29. Nada Hart, MDAnesthesiology Physician1851358220
  30. Nicole HartNurse Practitioner1982366787
  31. Renee HartStudent in an Organized Health Care Education/Training Program1013761410
  32. Ina Harten, NPFamily Nurse Practitioner1467922666
  33. Phillip Hartfield, MDInternal Medicine Physician1063152049
  34. Kimberly Hartgrove, NP-C, FNP-BCFamily Nurse Practitioner1518385822
  35. John Harthorne, MDInternal Medicine Physician1336103977
  36. Philip HartiganAnesthesiology Physician1437108545
  37. William Hartigan, LCSWClinical Social Worker1730630245
  38. Melissa HartinRegistered Nurse1821320102
  39. Connor HartleyStudent in an Organized Health Care Education/Training Program1215732052
  40. L Hartley, MDCardiovascular Disease Physician1588616809
  41. Monique Hartley-Brown, M.D.Hematology (Internal Medicine) Physician1992904387
  42. Abbey HartmanAddiction (Substance Use Disorder) Counselor1164844106
  43. Jillian HartmanMental Health Counselor1972967685
  44. Rebecca Hartman, M.D., M.P.H.Dermatology Physician1427496793
  45. Stefanie Hartman, CPNPPediatric Nurse Practitioner1407002975
  46. Susan HartmanCertified Registered Nurse Anesthetist1447782586
  47. Alexandra Hartnett, LCSWClinical Social Worker1366119976
  48. Davis HartnettStudent in an Organized Health Care Education/Training Program1275114886
  49. Lauren Hartnett, PA-CPhysician Assistant1225397391
  50. Christopher Hartnick, MDPediatric Otolaryngology Physician1972593242

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.