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 347 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. Sabina Islam, MDInfectious Disease Physician1275514390
  2. Salman Islam, MDDiagnostic Radiology Physician1366067217
  3. Shabatun Islam, M.D.Cardiovascular Disease Physician1932562782
  4. Abraham Islas, MAMental Health Counselor1801620943
  5. Zinah IsmaelDentist1629809082
  6. Ahmad IsmailGeneral Practice Dentistry1003661497
  7. Aseel Ismail, DMDDentist1093476871
  8. Dahlia IsmailStudent in an Organized Health Care Education/Training Program1619723707
  9. Khalid Ismail, MDSleep Medicine (Internal Medicine) Physician1649287277
  10. Simi IsolaCertified Registered Nurse Anesthetist1659223956
  11. Inyang Isong, M.D.Pediatrics Physician1568417202
  12. Anna Israel, LIC. AC.Acupuncturist1427371640
  13. Esther Israel, MDPediatrics Physician1346221520
  14. Amy Israelian, APRN, BCAdult Health Nurse Practitioner1205961497
  15. Catherine Isroff, MDNeurology Physician1649737222
  16. Angelina IssaStudent in an Organized Health Care Education/Training Program1871399535
  17. Nicolas Issa, MDInfectious Disease Physician1346234622
  18. Zain Alqaws Issa, DDSDentist1568886315
  19. Eric Isselbacher, MDCardiovascular Disease Physician1225003940
  20. Nawfal Istfan, M.D.Internal Medicine Physician1740248301
  21. Olav Istre, M.D., PH.DGynecology Physician1760623300
  22. Haley Italia, ODOptometrist1700444221
  23. Mona ItaniPsychiatry Physician1902280985
  24. Gilad Itchaki, MDHematology & Oncology Physician1134637101
  25. Padmaja Itikala, M.D.Neonatal-Perinatal Medicine Physician1184884868
  26. Kaori Ito, M.D.Student in an Organized Health Care Education/Training Program1023259918
  27. Akinobu Itoh, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1396005211
  28. Tara Itrich, PAPhysician Assistant1124126974
  29. Thomas Ituarte, MDStudent in an Organized Health Care Education/Training Program1679332225
  30. Alberto Iturbe CorderoDentist1336086172
  31. Johanna Iturrino Moreda, M.D.Gastroenterology Physician1689867053
  32. Hadas Ityel, M.DStudent in an Organized Health Care Education/Training Program1487185708
  33. Osnat Itzhaki Ben ZadokCardiovascular Disease Physician1801505870
  34. Joel Itzkowitz, RPHPharmacist1932480779
  35. Elaine Iuanow, M.D.Diagnostic Radiology Physician1972539609
  36. Sherry Iuliano, NPFamily Nurse Practitioner1013065135
  37. Johnny IV, FNP-CFamily Nurse Practitioner1053118950
  38. Daniel IvanovBehavior Analyst1790396737
  39. Irenose Ivbaze, MD, MPHObstetrics & Gynecology Physician1639819089
  40. Louise Ivers, MDInfectious Disease Physician1750354064
  41. Grant Iverson, PHDClinical Neuropsychologist1033524913
  42. Katherine Iverson, PH.D.Clinical Psychologist1205097763
  43. Ronald Iverson, MDObstetrics & Gynecology Physician1942290796
  44. Denise Ivey, R.N.Registered Nurse1790801207
  45. Dominique IviquelCounselor1215241633
  46. Ana Ivkovic, M.D.Psychiatry Physician1275708083
  47. Yoshiko Iwai, MDStudent in an Organized Health Care Education/Training Program1396597878
  48. Mami IwamotoOphthalmic Plastic and Reconstructive Surgery Physician1942281696
  49. Ian IwanickiMental Health Counselor1053135087
  50. Loretta Iwanoski, LICSWClinical Social Worker1871168914

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.