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 350 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 Jacobson, M.D.Hematology & Oncology Physician1669484143
  2. Joseph Jacobson, MDMedical Oncology Physician1942282041
  3. Karen Jacobson, MDInfectious Disease Physician1164407623
  4. Lee Jacobson, M.D., PH.D.Emergency Medicine Physician1508204777
  5. Matthew JacobsonDentist1710823810
  6. Nicholas Jacobson, MSStudent in an Organized Health Care Education/Training Program1184116782
  7. Sarah JacobsonSocial Worker1487058905
  8. Susan Jacobson, EDD, R.PH.Pharmacist1598161283
  9. Zhimon Jacobson, DMDProsthodontics1174559587
  10. Ryan Jacoby, PHDPsychologist1306293675
  11. Angela Jacques, MDPediatrics Physician1003102583
  12. Frederic Jacques, MD, MSC, FRCSCThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1477802098
  13. Jeremy JacquesStudent in an Organized Health Care Education/Training Program1912792706
  14. Jerry Jacques, CPHTPharmacy Technician1891914305
  15. Kristin Jacques, RN,MSN, CPNPPediatric Nurse Practitioner1063810554
  16. Joshua Jadwin, MDDiagnostic Radiology Physician1689104291
  17. Hale Jaeger, MDStudent in an Organized Health Care Education/Training Program1124829320
  18. Shaina JaegerStudent in an Organized Health Care Education/Training Program1508566829
  19. Giovana Jaen, MDStudent in an Organized Health Care Education/Training Program1386221737
  20. Maher Jafar, MDStudent in an Organized Health Care Education/Training Program1538593348
  21. Michael Jaff, DOInternal Medicine Physician1750372884
  22. Abraham Jaffe, M.D.Surgery Physician1558622852
  23. Emily JaffeInternal Medicine Physician1699569095
  24. Iris Jaffe, M.D.Cardiovascular Disease Physician1073561163
  25. Linda Jaffe, M.D.Endocrinology, Diabetes & Metabolism Physician1205873908
  26. Todd Jaffe, MDStudent in an Organized Health Care Education/Training Program1750879458
  27. Farouc Jaffer, MD PHDInterventional Cardiology Physician1083605547
  28. Maia Jaffer-DiazClinical Social Worker1265278808
  29. Saad Jafri, DODiagnostic Radiology Physician1740818087
  30. Karthik Jagannath, MDStudent in an Organized Health Care Education/Training Program1275272361
  31. Stacy Jagher, LICSWClinical Social Worker1083772396
  32. Haytham Jaha, BDSEndodontics1043646417
  33. Alex Jahangirvand, M.D.Student in an Organized Health Care Education/Training Program1487030151
  34. Narges JahanseirAnatomic Pathology & Clinical Pathology Physician1134583776
  35. Jessika Jahnsen, DMDGeneral Practice Dentistry1588991020
  36. Mayte JaimeCounselor1851793053
  37. Camilo Jaimes Cobos, M.D.Diagnostic Radiology Physician1033453576
  38. Silvia Jaimes Ocazionez, M.DPediatrics Physician1881867646
  39. Arpit JainInternal Medicine Physician1104559632
  40. Felipe Jain, M.D.Psychiatry Physician1861638959
  41. Khushboo Jain, D.M.DGeneral Practice Dentistry1669849816
  42. Mohit Jain, MD PHDCardiovascular Disease Physician1275741217
  43. Mukesh Jain, MDCardiovascular Disease Physician1942221775
  44. Nidhi Jain, M.B.B.S.Sleep Medicine (Internal Medicine) Physician1972295327
  45. Nimansha JainNeurology Physician1225921745
  46. Nina Jain, MDInternal Medicine Physician1497284160
  47. Nupur JainInternal Medicine Physician1306640354
  48. Pankaj Jain, MBBSInterventional Cardiology Physician1639784408
  49. Rohini JainStudent in an Organized Health Care Education/Training Program1720534803
  50. Rupal Jain, NPPediatric Nurse Practitioner1972423747

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.