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 240 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. Daniel Finn, PTOrthopedic Physical Therapist1851426928
  2. David Finn, MDInternal Medicine Physician1689635294
  3. Kathleen Finn, MDInternal Medicine Physician1346231974
  4. Kathleen Finn, NPAdult Health Nurse Practitioner1578795449
  5. Ryan FinnNurse Practitioner1558718957
  6. Stephanie Finn, D.M.D.Orthodontics and Dentofacial Orthopedics Dentistry1235530353
  7. Andrea Finnegan, ACNP-BCAcute Care Nurse Practitioner1578862678
  8. Claire Finnegan, PA-CPhysician Assistant1952190795
  9. Liam FinneganStudent in an Organized Health Care Education/Training Program1598604688
  10. Olivia Finnegan, LICSWSocial Worker1649830894
  11. Michele Finnell, NPAdult Health Nurse Practitioner1659388411
  12. Victor Finnemore, ODOptometrist1871650176
  13. Elaine Finneral, LICSWClinical Social Worker1013921543
  14. Kaitlyn Finneral, PA-CPhysician Assistant1386338317
  15. Patricia Finneran, NP-CAdult Health Nurse Practitioner1003069170
  16. Molly Finneseth, NPWomen's Health Nurse Practitioner1356587067
  17. John Finnigan, MD, PHDStudent in an Organized Health Care Education/Training Program1124655121
  18. Florian Fintelmann, M.D.Diagnostic Radiology Physician1508047572
  19. Anne Fiore, RN, NPNurse Practitioner1770632416
  20. Catherine Fiore, MDCritical Care Medicine (Internal Medicine) Physician1174028773
  21. Cholette FioreStudent in an Organized Health Care Education/Training Program1902607997
  22. Jocelyn Fiore, MSN, FNPFamily Nurse Practitioner1912518168
  23. Julie Fiore, MDInternal Medicine Physician1043699986
  24. Louis Fiore, M.D., M.P.H.Hematology & Oncology Physician1730299231
  25. Natalie Fiore, MSOT, OTR, CBISOccupational Therapist1811681521
  26. Olivia FioreCase Manager/Care Coordinator1225743958
  27. Toni Fiori, RDPediatric Nutrition Registered Dietitian1124511456
  28. Cassandra Fiorino, MDStudent in an Organized Health Care Education/Training Program1366182859
  29. Gary Fireman, PH.D.Clinical Psychologist1164643334
  30. Ron FiresteinMolecular Genetic Pathology (Pathology) Physician1164489381
  31. Eliza Firn, MDPediatric Critical Care Medicine Physician1235634106
  32. Emily Firn, MS, OTR/LOccupational Therapist1497927370
  33. Joseph Firriolo, MDPlastic Surgery Physician1306333505
  34. Arin Firstenberg, PA-CPhysician Assistant1962925990
  35. Kimberley FirthStudent in an Organized Health Care Education/Training Program1497287023
  36. Paul Firth, MDAnesthesiology Physician1689656621
  37. Adam Fisch, MD,PHDAnatomic Pathology & Clinical Pathology Physician1275063414
  38. Aidan Fischer, PHARMDCardiology Pharmacist1568145027
  39. Ariel Fischer, MDGastroenterology Physician1518594027
  40. Christopher Fischer, MDEmergency Medicine Physician1871793331
  41. Daniel Fischer, M.D.Anesthesiology Physician1942658026
  42. Edwin Fischer, M.D.Neurological Surgery Physician1912949959
  43. Grant FischerStudent in an Organized Health Care Education/Training Program1699302604
  44. Jason Fischer, M.D., M.ED.Pediatric Emergency Medicine (Pediatrics) Physician1235574781
  45. Kathleen Fischer, PA-CMedical Physician Assistant1346287067
  46. Kelly Fischer, FNP-BCFamily Nurse Practitioner1629420237
  47. Leah Fischer, PA-CPhysician Assistant1710510771
  48. Michael Fischer, MDInternal Medicine Physician1871511634
  49. Ryan Fischer, DCChiropractor1902364433
  50. Sarah Fischer, FNPFamily Nurse Practitioner1306365796

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.