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 320 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. Ann-Marie Hennessey, M.A., CCC-AAudiologist1144387945
  2. James Hennessey, MDEndocrinology, Diabetes & Metabolism Physician1063459386
  3. Lindsay Hennessey, AGNPAcute Care Nurse Practitioner1639674799
  4. Susan Hennessey-Power, FNP-BCFamily Nurse Practitioner1720324205
  5. Kerry Hennessy, LICSWClinical Social Worker1184820789
  6. Erica HenniganCritical Care Neonatal Nurse Practitioner1699593574
  7. Amelia Henning, CNMAdvanced Practice Midwife1295702876
  8. Robert HennisAnatomic Pathology & Clinical Pathology Physician1407644503
  9. Ana Carolina Henrique De Souza, MD, PHDStudent in an Organized Health Care Education/Training Program1326736513
  10. Adalis Henriquez, RNHome Health Registered Nurse1780392837
  11. Allison HenryClinical Social Worker1588117980
  12. Brittany HenryCounselor1053740308
  13. Cassis Henry, MDPsychiatry Physician1386772143
  14. Charles Henry, D.D.S.Oral and Maxillofacial Surgery (Dentist)1851483192
  15. Colleen Henry, RNRegistered Nurse1255585006
  16. Duncan Henry, MDPediatrics Physician1982865705
  17. Laura HenryMental Health Counselor1235725557
  18. Paula Henry, LICSWBehavior Analyst1023340635
  19. Sarah Henry, MDPediatrics Physician1376591834
  20. Rachel HenselHospitalist Physician1467848697
  21. Kathryn Henshaw, MDStudent in an Organized Health Care Education/Training Program1932900040
  22. Lynnette Henshaw, PHARMDOncology Pharmacist1538752555
  23. Michelle Henshaw Marble, DDS, MPHPublic Health Dentistry1043728173
  24. John Hensien, MDStudent in an Organized Health Care Education/Training Program1336999879
  25. Elizabeth Henske, M.D.Medical Oncology Physician1982667432
  26. Adam Hensley, M.D.Surgical Critical Care Physician1811351406
  27. Brandi Henson, PSY.D.Clinical Neuropsychologist1568627180
  28. Philip HensonStudent in an Organized Health Care Education/Training Program1891554085
  29. Dirk Hentschel, MDNephrology Physician1093771495
  30. Jasmin Henville, DMDDentist1144495748
  31. Grace Heo, DMDDentist1649039538
  32. David Hepner, MDAnesthesiology Physician1326097320
  33. Joseph Herald, MDInternal Medicine Physician1356081095
  34. Lauren Herald, MDPsychiatry Physician1518499714
  35. Marc Herant, M.D.Internal Medicine Physician1609882208
  36. Orleany HerasmeBehavior Technician1366184541
  37. Andrea Herber, PSY.DClinical Psychologist1376656173
  38. Carly Herbert, MD PHDStudent in an Organized Health Care Education/Training Program1992646012
  39. Marie Herbert, LICSWClinical Social Worker1689702821
  40. Martha Herbert, MD PHDNeurology Physician1588655104
  41. Dana HerbsmanRegistered Dietitian1326994336
  42. Michael Herce, M.D, MPHInternal Medicine Physician1447397807
  43. Heidi Herchen, ACNPC-AGAcute Care Nurse Practitioner1558194464
  44. Lyns Hercule, NPNurse Practitioner1306440185
  45. Paula Hercule, M.D.Family Medicine Physician1770964587
  46. Isabella Herdocia, RDRegistered Dietitian1922757319
  47. Susan Herel, CPNP-PCPediatric Nurse Practitioner1295987196
  48. John Herendeen, MDNeurological Surgery Physician1104406834
  49. Christopher Hergott, MD, PHDClinical Pathology Physician1114448958
  50. Charles Hergrueter, MDPlastic Surgery Physician1972569143

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.