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 304 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. Osama Hamdy, M.D., PH.D.Endocrinology, Diabetes & Metabolism Physician1902841596
  2. Antoine Hamedi-Sangsari, MDDiagnostic Radiology Physician1225666472
  3. Samee HameedStudent in an Organized Health Care Education/Training Program1548847791
  4. Alison Hamel, CNPFamily Nurse Practitioner1538602628
  5. Allison Hamel, PMHNP-BC, FNP-CNurse Practitioner1023590304
  6. Mary Elizabeth Hamel, M.D.Internal Medicine Physician1821020355
  7. Nicole HamelPharmacist1427645118
  8. Marguerite Hamel Nardozzi, MSW, LICSWClinical Social Worker1023133238
  9. Scott Hamelin, OTR/LSpecialist1427359579
  10. Davidson Hamer, MDInfectious Disease Physician1790741841
  11. Daniel HamesPediatric Critical Care Medicine Physician1679848782
  12. Kathleen Hames, MDDiagnostic Radiology Physician1336611789
  13. Kayla HamidiStudent in an Organized Health Care Education/Training Program1245044593
  14. Mohamed HamieStudent in an Organized Health Care Education/Training Program1417759390
  15. Emma HamillPediatric Nurse Practitioner1043845324
  16. Michaela Hamill, M.S., BCBA, LABABehavior Analyst1053173534
  17. Adam Hamilton, BDSC, DCDProsthodontics1124486410
  18. Alexandra Hamilton, PA-CPhysician Assistant1063159614
  19. Anna Rebecca Hamilton, MD, MSCAnesthesiology Physician1508278433
  20. Christine Hamilton, R.N.Registered Nurse1801268792
  21. Claire Hamilton, MD, PH.D.Dermatology Physician1508252198
  22. Emily Hamilton, NP-CFamily Nurse Practitioner1235446808
  23. Jayne Hamilton, RNRegistered Nurse1780815860
  24. Kayla Hamilton, MSGenetic Counselor (M.S.)1740821271
  25. Kristina HamiltonDoula1982526455
  26. Lucia Hamilton, DPTPhysical Therapist1285147868
  27. Ryan Hamilton, DCChiropractor1841747763
  28. Shai Hamilton, MSWClinical Social Worker1801068242
  29. Thomas Hamilton, M.D.Pediatric Surgery Physician1811991201
  30. Johnnie Hamilton - Mason, PH.DClinical Social Worker1790837409
  31. Chahat HamiraniAudiologist1750935342
  32. Jillian Hamlin, PA-CPhysician Assistant1013531789
  33. Raina Hammel, M.D.Obstetrics & Gynecology Physician1912356056
  34. Janet Hammer, PA-CPhysician Assistant1124212204
  35. Mark Hammer, M.D.Diagnostic Radiology Physician1578884003
  36. Norman Hammer, MS, DDSProsthodontics1164441762
  37. Sara Hammer, PA-CPhysician Assistant1639608391
  38. Terese Hammerle, MA CCC-SLPSpeech-Language Pathologist1275610040
  39. Peter Hammerman, MD, PHDMedical Oncology Physician1518029545
  40. Paul Hammerness, MDChild & Adolescent Psychiatry Physician1417930850
  41. Elizabeth Hammerstrand, NPAdult Health Nurse Practitioner1295762177
  42. Tara Hammes, RDRegistered Dietitian1003762154
  43. Jani Hammit, M.A., M.S.Speech-Language Pathologist1932894581
  44. Caitlin Hammond, LICSWClinical Social Worker1215692835
  45. Emily HammondStudent in an Organized Health Care Education/Training Program1841006889
  46. Lisa Hammond, M.D.Anesthesiology Physician1306162664
  47. Sarah Hammond, MDInfectious Disease Physician1891833893
  48. Sarah HammondPhysician Assistant1194470955
  49. Khaled Hammoud, M.D.Diagnostic Radiology Physician1174962187
  50. Ole-Petter Hamnvik, M.D.Endocrinology, Diabetes & Metabolism Physician1063603678

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.