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 353 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. Jack JansenStudent in an Organized Health Care Education/Training Program1679426969
  2. Natalie Jansen, MDStudent in an Organized Health Care Education/Training Program1356920318
  3. Cassandra JanuszCounseling Psychologist1235612508
  4. James Januzzi, MDCardiovascular Disease Physician1699757062
  5. Nathalie Janvier, RDPediatric Nutrition Registered Dietitian1285592832
  6. Shirley Janvier, M.ED, LMHCMental Health Counselor1306013602
  7. Hunter JanwayStudent in an Organized Health Care Education/Training Program1124833074
  8. John Jao, M.D.Internal Medicine Physician1538359674
  9. Elke Jarboe, M.D.Cytopathology Physician1326229311
  10. Elena Jardine, PA-CPhysician Assistant1679244602
  11. Jacob Jaremko, MD, PHDDiagnostic Radiology Physician1740593334
  12. Andrea Jaresova, MDObstetrics & Gynecology Physician1649760851
  13. Jane Jarjour, MDPediatric Emergency Medicine (Pediatrics) Physician1477058048
  14. Isabel Jarmel, MDInternal Medicine Physician1588467732
  15. Marcin Jarmoc, DMDOral and Maxillofacial Surgery (Dentist)1033388228
  16. Johnny Jarnagin, MDPhysical Medicine & Rehabilitation Physician1659935351
  17. Petr Jarolim, MD PHDClinical Pathology/Laboratory Medicine Physician1689690588
  18. Adam Jaroszewski, AMPsychologist1538627898
  19. Maquaddus JarralStudent in an Organized Health Care Education/Training Program1063397412
  20. Hajer JarrayaDiagnostic Radiology Physician1982397204
  21. Mohamed Jarraya, MDDiagnostic Radiology Physician1023421849
  22. Sonia Jarrett, M.D.Pediatrics Physician1083066500
  23. Amy Jarry, NPAdult Health Nurse Practitioner1922179373
  24. Casey Jarvis, MDStudent in an Organized Health Care Education/Training Program1700462231
  25. Jagar Jasem, MD,MPHHematology (Internal Medicine) Physician1972926988
  26. Jacob Jasper, MDStudent in an Organized Health Care Education/Training Program1154124576
  27. Romal Jassar, MDNeonatal-Perinatal Medicine Physician1225243694
  28. Wid JastaneiahDentist1447618731
  29. Jordan Jastrab, MD, PHDInfectious Diseases Pharmacist1912497371
  30. Neal Jatekar, BACase Manager/Care Coordinator1750882718
  31. Cyril JaundooCase Manager/Care Coordinator1083022065
  32. Dorna Javadian, DDSDentist1275153827
  33. Sogol Javaheri, MDSleep Medicine (Internal Medicine) Physician1417185661
  34. Hafsa JavaidPhysician Assistant1609497742
  35. Satish Javali, MBBSSurgery Physician1760774228
  36. Nauman JavedInternal Medicine Physician1447004312
  37. Patrick Javid, M.D.Pediatric Surgery Physician1346395076
  38. Nathalie Javidi-SharifiMedical Oncology Physician1699221572
  39. Carlie Javier, RNRegistered Nurse1053876045
  40. Damarys Javier, NPPediatric Nurse Practitioner1417017542
  41. Maricor Cristina Javier, MDNeonatal-Perinatal Medicine Physician1851302889
  42. Wilfredo Javier Rojas, MDInternal Medicine Physician1003518317
  43. Kimberly Javor, PA-CPhysician Assistant1609480987
  44. Raagini Jawa, M.D., M.P.H.Internal Medicine Physician1508284720
  45. Kerri Jawadekar, NP-CFamily Nurse Practitioner1831670421
  46. Amrit JawandaOptometrist1508328774
  47. Hajah JawardBehavior Technician1427691138
  48. Jean Jay, P.T.Orthopedic Physical Therapist1093934119
  49. Kathleen Jay, PNPPediatric Nurse Practitioner1568883734
  50. Pooja Jayaprakash, MDFamily Medicine Physician1255891248

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.