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 309 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. David HarmonHematology & Oncology Physician1851358352
  2. Joseph Harmon, D.O.Neurology with Special Qualifications in Child Neurology Physician1487910170
  3. McKayla Harmon, RN, CPNPPediatric Nurse Practitioner1528621836
  4. Sarah Harmon, LMHCProfessional Counselor1942729280
  5. Joy Harms, MA, CCC-SLPSpeech-Language Pathologist1841417045
  6. Miriam Harnett, MDAnesthesiology Physician1508822479
  7. Kathleen Harney, PTAPhysical Therapy Assistant1215060280
  8. Kathy Harney, PNPPediatric Nurse Practitioner1063471928
  9. Madison HarneyPhysician Assistant1174467476
  10. Kelly Harnsberger, MAMental Health Counselor1164087409
  11. Richard Harold, DMDDentist1841838661
  12. Ameena HaroonDentist1871201061
  13. Khadar HarounStudent in an Organized Health Care Education/Training Program1861132797
  14. Jenna Harowitz, MDStudent in an Organized Health Care Education/Training Program1144922790
  15. Beth Harper, M.D.Pediatrics Physician1255655031
  16. Carl Harper, M.D.Surgery of the Hand (Plastic Surgery) Physician1679894950
  17. Joel Harper, CPHTPharmacy Technician1124148820
  18. Kelly HarperClinical Psychologist1982056008
  19. Marvin Harper, MDPediatric Emergency Medicine (Pediatrics) Physician1912964453
  20. Matthew Harper, DDSPediatric Dentistry1730660903
  21. Morgan Harper, LCSWClinical Social Worker1619734043
  22. Elizabeth HarrahyPhysical Therapist1649485129
  23. Negar HarrajiDentist1063067163
  24. Ansley HarralsonStudent in an Organized Health Care Education/Training Program1265370209
  25. Sarah Harre, MSW, LCSWClinical Social Worker1184291205
  26. Torrance HarrellPharmacy Technician1699366443
  27. David Harrild, M.D.Pediatric Cardiology Physician1801069711
  28. Anne Harrington, LICSWClinical Social Worker1952349805
  29. Barbara Harrington, RNRegistered Nurse1710041876
  30. Cynthia Harrington, NPAdult Health Nurse Practitioner1982942009
  31. Ellen Harrington Harrington, LICSWGeriatric Medicine (Internal Medicine) Physician1851420327
  32. Kara Harrington, PHDPsychologist1023213543
  33. Katie Harrington, AU.DAudiologist1922237692
  34. Kelly HarringtonPrimary Care Nurse Practitioner1568980365
  35. Kristin Harrington, MD, PHDStudent in an Organized Health Care Education/Training Program1124540307
  36. Leoni Harrington, LICSWClinical Social Worker1942427208
  37. Lori Harrington, MDEmergency Medical Services (Emergency Medicine) Physician1295781037
  38. Molly Harrington, M.D.Pediatric Endocrinology Physician1962420323
  39. Nichole HarringtonCertified Registered Nurse Anesthetist1568002244
  40. Noreen Harrington, PHDPsychiatry Physician1881660314
  41. Ryan Harrington, M.D.Internal Medicine Physician1205285558
  42. Samantha HarringtonNuclear Radiology Physician1255795407
  43. Yevgeniya Harrington, M.D.Pediatrics Physician1205361797
  44. Rachel Harrington-Levey, PHDClinical Psychologist1619194818
  45. Andrea Harriott, MDNeurology Physician1205135571
  46. Adam Harris, M.D.Pain Medicine (Physical Medicine & Rehabilitation) Physician1396192142
  47. Anna Harris, APRNPediatric Nurse Practitioner1528893674
  48. Ashley HarrisStudent in an Organized Health Care Education/Training Program1942121256
  49. Brian Harris, M.D., PH.D.Dermatopathology Physician1306368584
  50. Caren Harris, NPPediatric Nurse Practitioner1184751067

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.