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 438 of 838.

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

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

The 8 largest groups in Boston

  1. Students in training6,126
  2. Internal Medicine Physician2,320
  3. Clinical Social Worker1,906
  4. Physician Assistant1,660
  5. Anesthesiology Physician1,082
  6. Nurse Practitioner961
  7. Family Nurse Practitioner938
  8. Diagnostic Radiology Physician896

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. Gregory LeyaStudent in an Organized Health Care Education/Training Program1902394380
  2. Jacinta LeydenPsychiatry Physician1609439967
  3. Peter Leyva, CRNACertified Registered Nurse Anesthetist1023109980
  4. Kareem LezamaFamily Medicine Physician1801319355
  5. David Lhowe, MDOrthopaedic Surgery Physician1326039975
  6. Alexandra LiPsychiatric/Mental Health Nurse Practitioner1144044801
  7. Alice LiStudent in an Organized Health Care Education/Training Program1679109649
  8. Alice Li, DMDEndodontics1548956139
  9. Alice LiInternal Medicine Physician1851124168
  10. Amy Li, D.M.D.Dentist1609187475
  11. Amy Li, MD PHDStudent in an Organized Health Care Education/Training Program1194352203
  12. Anna Li, MDStudent in an Organized Health Care Education/Training Program1215865738
  13. Anni Li, DMDDentist1710627963
  14. Annie LiAnatomic Pathology & Clinical Pathology Physician1922941921
  15. Brian Li, MDGastroenterology Physician1972097624
  16. Brian Li, STUDENTStudent in an Organized Health Care Education/Training Program1356041669
  17. Carrie LiNeuromuscular Medicine (Psychiatry & Neurology) Physician1982280350
  18. Cathy Li, PA-CPhysician Assistant1750106761
  19. Cecilia Li, PHARMD, BCIDPInfectious Diseases Pharmacist1831712744
  20. Chieh Li, EDDPsychologist1114576709
  21. Dan LiStudent in an Organized Health Care Education/Training Program1164223376
  22. Daniel Li, MDStudent in an Organized Health Care Education/Training Program1306595293
  23. David Li, M.D.Student in an Organized Health Care Education/Training Program1558924076
  24. David Li, MD, MBADermatology Physician1891355186
  25. Elizabeth Li, MDStudent in an Organized Health Care Education/Training Program1801734850
  26. Eric LiStudent in an Organized Health Care Education/Training Program1598469801
  27. Fang Li, PHDStudent in an Organized Health Care Education/Training Program1871284943
  28. Frances LiStudent in an Organized Health Care Education/Training Program1073315495
  29. Gavin LiStudent in an Organized Health Care Education/Training Program1497556252
  30. Grace Li, MDStudent in an Organized Health Care Education/Training Program1275393951
  31. Hua LiAnatomic Pathology & Clinical Pathology Physician1912401290
  32. Huijun Li, MA, LMFT, R-DMTMarriage & Family Therapist1326826934
  33. Ingrid Li, M.D.Psychiatry Physician1821022575
  34. Jennifer LiAllergy & Immunology Physician1841681566
  35. Jennifer Li, MDVascular Surgery Physician1447609235
  36. Jenny Li, OTDOccupational Therapist1346885498
  37. Jessica Li, MDStudent in an Organized Health Care Education/Training Program1992437677
  38. Jiahua Li, M.D.Nephrology Physician1700225901
  39. Jiamin LiStudent in an Organized Health Care Education/Training Program1629870027
  40. Jingqi Li, DDSOral and Maxillofacial Surgery (Dentist)1023637527
  41. Joan Li, MDPediatrics Physician1730648999
  42. Jonathan Li, M.D.Infectious Disease Physician1104021757
  43. Jonathan LiInternal Medicine Physician1811377633
  44. Joseph Li, M.D.Internal Medicine Physician1043209380
  45. Josephine Li, M.D.Endocrinology, Diabetes & Metabolism Physician1780003806
  46. Joyce Li, M.D.Pediatric Emergency Medicine (Pediatrics) Physician1114052404
  47. Karen Li, NPWomen's Health Nurse Practitioner1194369199
  48. Kathryn Li, MDStudent in an Organized Health Care Education/Training Program1235923962
  49. Katie Li, MDInternal Medicine Physician1972189967
  50. Kelly LiStudent in an Organized Health Care Education/Training Program1700724804

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.