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 346 of 838.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

The 8 largest groups in Boston

  1. Students in training6,126
  2. Internal Medicine Physician2,320
  3. Clinical Social Worker1,906
  4. Physician Assistant1,660
  5. Anesthesiology Physician1,082
  6. Nurse Practitioner961
  7. Family Nurse Practitioner938
  8. Diagnostic Radiology Physician896

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. Shaikh IqbalCardiovascular Disease Physician1639756547
  2. Stephanie IraStudent in an Organized Health Care Education/Training Program1356100465
  3. Christine Iracheta, MSPTPhysical Therapist1760568679
  4. Jennifer Irani, M.D.Colon & Rectal Surgery Physician1508928284
  5. Rashna Irani, M.D.Pediatrics Physician1144337718
  6. Christina Ireland, RN CFNPFamily Nurse Practitioner1700053089
  7. Ia IremadzeStudent in an Organized Health Care Education/Training Program1174477277
  8. Eesha Irfanullah, MDStudent in an Organized Health Care Education/Training Program1902608185
  9. Christopher Iriarte, MDDermatology Physician1770073751
  10. Eileen Irish, FNPFamily Nurse Practitioner1720307101
  11. Michael Irizarry, MDNeurology Physician1790775237
  12. Vanessa IroegbulemClinical Social Worker1356221998
  13. Jessica Ironman, M.S., CCC-SLPSpeech-Language Pathologist1316241987
  14. Brianna Irons, MDStudent in an Organized Health Care Education/Training Program1023811056
  15. Mira Irons, MDClinical Biochemical Genetics Physician1134184666
  16. Robert Irvin, M.D.Psychiatry Physician1063459170
  17. Meaghan Irvine, LICSWClinical Social Worker1982574893
  18. Kim Irving, LICSWClinical Social Worker1447730098
  19. Michael Irwig, M.D.Endocrinology, Diabetes & Metabolism Physician1669414710
  20. Jane Irwin, MDPediatrics Physician1134705726
  21. Kelly Irwin, M.D.Psychiatry Physician1013176650
  22. Mas Suhaila IsaStudent in an Organized Health Care Education/Training Program1851641849
  23. Kathryn Isaac, M.D., FRCSCOral & Maxillofacial Surgery (D.M.D.)1235582461
  24. Kristine IsaacBehavior Technician1497371413
  25. Zacharia Isaac, MDPain Medicine (Physical Medicine & Rehabilitation) Physician1760460828
  26. Jamie Isaac Jefferson, CNPWomen's Health Nurse Practitioner1902267727
  27. Arielle IsaacsonStudent in an Organized Health Care Education/Training Program1508410572
  28. Ella Isaacson, CNOPsychiatric/Mental Health Nurse Practitioner1801536016
  29. Colleen IsabelleStudent in an Organized Health Care Education/Training Program1679412951
  30. Andrew IsacStudent in an Organized Health Care Education/Training Program1952241283
  31. Maksim Isachanka, M.D.Student in an Organized Health Care Education/Training Program1114610276
  32. Tristan Isacksen, NPPsychiatric/Mental Health Nurse Practitioner1376419283
  33. Federica IsaiaPeriodontics1659785715
  34. Steven Isakoff, MD PHDHematology & Oncology Physician1447205042
  35. Imari-Ashley Isaksen, PHDPsychologist1780202846
  36. Ameesh Isath, M.B.B.SCardiovascular Disease Physician1447754536
  37. Erin IsazaStudent in an Organized Health Care Education/Training Program1386348258
  38. Nicolas Isaza Valencia, MDInternal Medicine Physician1487211082
  39. Elvira Isganaitis, MD, MPHPediatric Endocrinology Physician1831385285
  40. Kristin Ishac, NP-CNurse Practitioner1528505476
  41. Aisha IshaquePediatric Pulmonology Physician1982585246
  42. Michiko Ishibashi, MAMental Health Counselor1760534200
  43. Rachel Ishikawa, PH.D.Clinical Psychologist1942646138
  44. Yumiko Ishizawa, MD PHD MPHCritical Care Medicine (Anesthesiology) Physician1679555965
  45. Andrew IshizukaStudent in an Organized Health Care Education/Training Program1881399962
  46. Christopher Isibor, CNPFamily Nurse Practitioner1033580188
  47. Docia Isibor, FNPFamily Nurse Practitioner1962144725
  48. Busra Isik, MDStudent in an Organized Health Care Education/Training Program1588416978
  49. Kendra Iskander, M.D.Surgery Physician1982863767
  50. David IskhakovStudent in an Organized Health Care Education/Training Program1801537436

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.