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 216 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. Derek Effiom, MBBSStudent in an Organized Health Care Education/Training Program1063360386
  2. Adi Efron Srour, MDStudent in an Organized Health Care Education/Training Program1255217139
  3. Ann Efstathion, MS, RD, LDNRegistered Dietitian1194979138
  4. Jason Efstathiou, MDRadiation Oncology Physician1598967523
  5. Alana EganStudent in an Organized Health Care Education/Training Program1386486488
  6. Caitlin EganSurgery Physician1780118224
  7. Elizabeth Egan, MPH, LCSWClinical Social Worker1215257043
  8. Florence Egan, CRNACertified Registered Nurse Anesthetist1821213489
  9. Katherine Egan, RD, LDNRegistered Dietitian1396518015
  10. Kelsey Egan, MDPediatrics Physician1255793493
  11. Ose EgbiremolenAssistant Behavior Analyst1972020014
  12. Chinyere Egbuta, M.D.Pediatric Anesthesiology Physician1902077555
  13. Leann Egeto, LICSW, PHDClinical Social Worker1518247022
  14. Elliott EgganPsychiatry Physician1598225781
  15. Dominique Egger, PHDClinical Child & Adolescent Psychologist1992690531
  16. Erin Eggers, RN MSN CPNPPediatric Nurse Practitioner1316184443
  17. Taylor EggersStudent in an Organized Health Care Education/Training Program1376429746
  18. Dakota Egglefield, PHDPsychologist1124851936
  19. Teena Eggleston, PTAPhysical Therapy Assistant1104281716
  20. Gabriele Egidy Assenza, M.D.Pediatric Cardiology Physician1760624878
  21. Danielle EgittoRegistered Nurse1245088400
  22. Michelle EglovitchStudent in an Organized Health Care Education/Training Program1205784832
  23. Anthony Ehikhamhen, RNHome Health Registered Nurse1326170440
  24. Michael Ehle, PHARM.D.Pharmacist1023380029
  25. Alexandra EhrenbergStudent in an Organized Health Care Education/Training Program1952241259
  26. Miriam EhrenbergOphthalmology Physician1730462441
  27. Alyssa EhrenfriedAthletic Trainer1922925783
  28. Lauren Ehrhardt-Humbert, MDInternal Medicine Physician1669168423
  29. Bella EhrlichStudent in an Organized Health Care Education/Training Program1467212373
  30. Carol Ehrlich, MDInternal Medicine Physician1245220433
  31. Richard Ehrlichman, MDPlastic and Reconstructive Surgery Physician1730105891
  32. Vida Ehyaee, MDAnatomic Pathology & Clinical Pathology Physician1346828985
  33. Emma EibyePharmacist1144941576
  34. Eva Eichen, PA-CSurgery Physician1669942967
  35. Lauren Eichenwald, MDGastroenterology Physician1659900462
  36. Susan Eichhorn, MDStudent in an Organized Health Care Education/Training Program1750131660
  37. Clare Eichinger, MDAnesthesiology Physician1053809194
  38. April Eichler, MD, MPHNeurology Physician1437124583
  39. Florian Eichler, MDNeurology Physician1487631412
  40. Sarah EidStudent in an Organized Health Care Education/Training Program1013775444
  41. Rawan EidahDentist1871265355
  42. Andrew Eidelberg, MDStudent in an Organized Health Care Education/Training Program1831779529
  43. Matthias Eikermann, MD, PHDAnesthesiology Physician1316106743
  44. Katharina Eikermann-Haerter, M.D.Diagnostic Radiology Physician1326421223
  45. Jennifer Eile, NPPediatric Nurse Practitioner1962461335
  46. Jenna Eilenberg, M.A.Clinical Psychologist1861067514
  47. Jon Einarsson, M.D.Gynecology Physician1407813694
  48. Erica Einhorn, LBA, BCBABehavior Analyst1538774104
  49. Honora Einhorn, LCSWClinical Social Worker1568949667
  50. Thomas Einhorn, M.D.Orthopaedic Surgery Physician1043268261

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.