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 184 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. Kimberly DebrulerInternal Medicine Physician1205579802
  2. George Dec, MDInternal Medicine Physician1063402139
  3. Jennifer Decan, PTAPhysical Therapy Assistant1811325772
  4. James Decaprio, MDMedical Oncology Physician1275500654
  5. Katherine DecaroSpeech-Language Pathologist1720727068
  6. Melissa DecelleClinical Social Worker1982228904
  7. Austin Dechalus, MDPediatrics Physician1659831436
  8. Tracey Dechert, MDSurgical Critical Care Physician1447469788
  9. Ashley Decicco, AGNPNurse Practitioner1649943200
  10. Brennan Decker, M.D., PH.D.Anatomic Pathology Physician1033630488
  11. Kathryn Decker, MS, CAGSSchool Psychologist1699567008
  12. Thilo Deckersbach, PHDPsychologist1851377055
  13. Lori Decosta, RD CNSCRegistered Dietitian1316234784
  14. David Decoteau, PA-CPhysician Assistant1285189845
  15. Danielle Decourcey, M.D.Pediatric Critical Care Medicine Physician1396916995
  16. Alejandra DecurgezMental Health Counselor1295424166
  17. Aikaterini Dedeilia, MDStudent in an Organized Health Care Education/Training Program1891596037
  18. Fatma Dedeoglu, M.D.Pediatric Rheumatology Physician1316053184
  19. Julien Dedier, MD MPHInternal Medicine Physician1154386381
  20. Elisaveta Dedo, RPHPharmacist1245833821
  21. Stephanie DeebStudent in an Organized Health Care Education/Training Program1225730542
  22. Linda Deeds, MDStudent in an Organized Health Care Education/Training Program1407022270
  23. Katherine Deeley, OTRLOccupational Therapist1962610188
  24. Colleen Deems, RN/NPPediatric Nurse Practitioner1558677344
  25. Alicia DefabriqueStudent in an Organized Health Care Education/Training Program1346088218
  26. Julia DefariaBehavior Technician1033865183
  27. Mark Defazio, PTAPhysical Therapy Assistant1619503125
  28. Lindsey DefeudisBehavior Technician1689284572
  29. Miriam DefilippDiagnostic Radiology Physician1982134219
  30. Melissa Defilippi, LICSWClinical Social Worker1194293977
  31. Stephen DefilippoCounselor1720461122
  32. Jennifer DeflorioMental Health Counselor1023306602
  33. Jared Deflurin, LADC IIAddiction (Substance Use Disorder) Counselor1124995774
  34. Warren DeforgePharmacist1346922366
  35. Christopher Defrancesco, MDPediatric Orthopaedic Surgery Physician1215431911
  36. John DefranciscoMedical Physician Assistant1427922418
  37. Catherine Defuria, DMDStudent in an Organized Health Care Education/Training Program1467858688
  38. Christina Defusco, NPAdult Health Nurse Practitioner1396067401
  39. Courtney Defusco, NPAdult Health Nurse Practitioner1003237744
  40. Barbara Degar, MDPediatric Hematology & Oncology Physician1326007212
  41. Michelle Degen, MDPediatric Cardiology Physician1871090605
  42. Regina Degeorge, PT, DPT, CSCSPhysical Therapist1366153231
  43. Shaidah Deghan Manshadi, M.D.Vascular Surgery Physician1528745320
  44. Huseyin Berk Degirmenci, M.D.Rheumatology Physician1821615295
  45. Patricia Degiulio, M.D.Neonatal-Perinatal Medicine Physician1073538294
  46. Joshua Degrandpre, NP-CNurse Practitioner1942855663
  47. Patricia Degroot, MDObstetrics & Gynecology Physician1326096371
  48. Ella Dehestani, PA-CPhysician Assistant1679433106
  49. Laura DeheullePharmacist1144943705
  50. Kerry Dehimer, PA-CPhysician Assistant1023637899

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.