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 185 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. Mehrdad Dehpanah, D.M.D.Pediatric Dentistry1952454977
  2. David Deicicchi, PHARMDAmbulatory Care Pharmacist1740552835
  3. Meghan Deighan, MSN CPNP-PCPediatric Nurse Practitioner1225861701
  4. Ryan Deighan, DCChiropractor1396337283
  5. Iris Deitch HarelStudent in an Organized Health Care Education/Training Program1659927952
  6. Annika Deitermann, MDStudent in an Organized Health Care Education/Training Program1477312908
  7. Andre Dejam, MD, PHDCardiovascular Disease Physician1467594259
  8. Endale Tefera Dejene, MD, MSCStudent in an Organized Health Care Education/Training Program1811783277
  9. Cara Dejong, R.D., L.D.N.Registered Dietitian1083828727
  10. Megan Dejong, MD, PHDStudent in an Organized Health Care Education/Training Program1316740327
  11. Alexander Dekel, M.D.Anesthesiology Physician1093177677
  12. Sharon Dekel Tsvetkov, PHDPsychiatry Physician1437663838
  13. John Dekker, MD, PHDAnatomic Pathology & Clinical Pathology Physician1578722104
  14. Daniela Del Campo, MDStudent in an Organized Health Care Education/Training Program1104676022
  15. Luis Del Castillo, D.M.D.Prosthodontics1801018411
  16. Michael Del MonicoStudent in an Organized Health Care Education/Training Program1255174736
  17. Nicolette Del MonicoStudent in an Organized Health Care Education/Training Program1801642988
  18. Pedro Del Nido, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1134230998
  19. Mary Del Olmo, PT, DPTPhysical Therapist1255450268
  20. Caroline Del Rey, MT-BCMusic Therapist1003343401
  21. Emily Del RosarioBehavior Technician1689414203
  22. Maya Del Rosario, MS, CGCGenetic Counselor (M.S.)1417783671
  23. Diana Del Valle, MD, MPHStudent in an Organized Health Care Education/Training Program1407550338
  24. Kathryn Delack, NPNeonatal Nurse Practitioner1407159247
  25. Jessica Delahanty, MDInternal Medicine Physician1093395006
  26. Linda Delahanty, M.S.,R.D., LDNRegistered Dietitian1295858322
  27. Alberto DelaidelliNeuropathology Physician1801788922
  28. Ivana Delalle, M.D.Anatomic Pathology Physician1609849918
  29. Anna Delamerced, MDPediatrics Physician1841874781
  30. Ajah Delande, NPAcute Care Nurse Practitioner1437867751
  31. Atima Delaney, M.D.Pediatric Emergency Medicine (Pediatrics) Physician1275797326
  32. Cailin Delaney, R.N., N.P.Adult Health Nurse Practitioner1649491655
  33. David Delaney, M.D.Critical Care Medicine (Internal Medicine) Physician1194760819
  34. Douglas Delaney, LICSWClinical Social Worker1588989065
  35. Francis Delaney, MDBody Imaging Physician1487337416
  36. Lauren Delaney, PA-CPhysician Assistant1588995146
  37. Margaret Delaney, DPTPhysical Therapist1376056440
  38. Ruth Delaney, MDOrthopaedic Surgery Physician1013163682
  39. Thomas Delaney, MSWSocial Worker1104047166
  40. William Delaney, LICSWClinical Social Worker1912524232
  41. Ann Marie Delano, NPPsychiatric/Mental Health Nurse Practitioner1487737854
  42. Catherine Delano, LCSWClinical Social Worker1639787898
  43. Sophia Delano, MD, MPPPediatric Dermatology Physician1881980365
  44. Ralph Delatorre, MDSurgery Physician1932294626
  45. Laurie DelatourStudent in an Organized Health Care Education/Training Program1417533142
  46. Dana Delaunay, MA BCBA LABABehavior Analyst1881066447
  47. Tyler DelaurentisGeneral Practice Dentistry1013617323
  48. Eleni DelavogiaStudent in an Organized Health Care Education/Training Program1245971761
  49. Lawton DelayStudent in an Organized Health Care Education/Training Program1770424111
  50. Tom Delbanco, M.D.Internal Medicine Physician1790722486

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.