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 258 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. Lukas Gaffney, MD, MPHPediatrics Physician1376003251
  2. Michael Gaffney, MDPediatrics Physician1346702446
  3. Rebecca Gaffney, MDDermatology Physician1497216899
  4. Jeffrey Gagan, M.D./PH.D.Clinical Pathology Physician1265835839
  5. Eleni Gagari, D.M.D., D.M.SC.Oral and Maxillofacial Pathology Dentistry1699821116
  6. Lauren Gagarin, NP-CAdult Health Nurse Practitioner1699924662
  7. Christine Gaggin, NPAcute Care Nurse Practitioner1275873184
  8. Hanna Gaggin, M.D., M.P.H.Cardiovascular Disease Physician1760597728
  9. Jason Gaglia, M.D.Endocrinology, Diabetes & Metabolism Physician1023098605
  10. Nancy Gagliano, MDInternal Medicine Physician1881680767
  11. Thiago Gagliano Juca D Oliveira, MD, PHDEndocrinology, Diabetes & Metabolism Physician1013546639
  12. Elizabeth Gagliardi, MDObstetrics & Gynecology Physician1669562617
  13. Melynda GagliardiOptometrist1962131706
  14. Thomas Gagliardi, MDStudent in an Organized Health Care Education/Training Program1417717026
  15. Adele Gagne, MSSpeech-Language Pathologist1669556742
  16. Andreanne Gagne, M.D., M. SC.Anatomic Pathology Physician1538807995
  17. Florence Gagne, MDPediatrics Physician1376315531
  18. Lisa GagnePhysician Assistant1588049183
  19. Makenzie GagneClinical Social Worker1023778297
  20. Staci Gagne, M.D.Diagnostic Radiology Physician1255694683
  21. Elizabeth Gagnon, PHDClinical Psychologist1558414060
  22. Haley Gagnon, PA-CPhysician Assistant1700716156
  23. James Gagnon, PHARM.D.Pharmacist1689676389
  24. Maria GagnonPharmacist1043584709
  25. Marie-Helene Gagnon, MDStudent in an Organized Health Care Education/Training Program1649790072
  26. Nicole Gagnon, LCSWClinical Social Worker1780335810
  27. Tracey Gagnon, PH.D.Psychologist1336697994
  28. Charles Gagnon-Vargas, MDStudent in an Organized Health Care Education/Training Program1568265577
  29. Eric Gaier, MD. PHDOphthalmology Physician1134568199
  30. Gaurav Gaiha, MDGastroenterology Physician1518221076
  31. Aliyah Gaines, MDStudent in an Organized Health Care Education/Training Program1427707207
  32. Latarsha GainesLactation Consultant (Non-RN)1205659216
  33. Naomi Gaines, PAMedical Physician Assistant1306483680
  34. Justin Gainor, MDMedical Oncology Physician1487813010
  35. Melanie Gainsbury, M.D.Surgery Physician1609041904
  36. Nicole GaisfordStudent in an Organized Health Care Education/Training Program1841141389
  37. Henning Gaissert, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1437149028
  38. Johannah Gaitings-HarrodRegistered Dietitian1275343063
  39. Stuti Gaitonde, BDSStudent in an Organized Health Care Education/Training Program1952271280
  40. Kerry Gaj, MSN, AGACNP-BCAcute Care Nurse Practitioner1952858946
  41. Nancy Gajee, PH DPsychologist1720114804
  42. Gehane GajjaouiNurse Practitioner1639773500
  43. Zsombor GalStudent in an Organized Health Care Education/Training Program1972301596
  44. Manish Gala, M.D.Gastroenterology Physician1033399357
  45. Albert Galaburda, M.D.Neurology Physician1801836382
  46. Abdulaziz Galadari, MDDermatology Physician1619809498
  47. Arianna GalanteBehavior Technician1083221360
  48. Gregory Galanti, MDAnesthesiology Physician1598225872
  49. Maria Galarraga, DDSProsthodontics1790480788
  50. Kyle Galati, DOPsychiatry Physician1932698180

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.