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 121 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. Mollie Carruthers, MDInternal Medicine Physician1508025958
  2. Robert Carruthers, MDInternal Medicine Physician1326207754
  3. Sasha Carsen, M.D.Orthopaedic Surgery Physician1366884884
  4. Bianca Carson, MDNeurology Physician1033646575
  5. Mary Carson, MDObstetrics & Gynecology Physician1356308787
  6. Elizabeth CarstensStudent in an Organized Health Care Education/Training Program1881126084
  7. Jeremi Carswell, MDPediatric Endocrinology Physician1245368406
  8. Daniel CartagenaPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1215858352
  9. Evelyn Cartagena, LPNLicensed Vocational Nurse1720927072
  10. Leslie Cartagena, FNP-CNurse Practitioner1598278855
  11. Samantha Cartelle, DMDStudent in an Organized Health Care Education/Training Program1346180601
  12. Kathleen CartenDoula1083481162
  13. Bob Carter, M.D., PH.D.Neurological Surgery Physician1184686057
  14. Chekesha Carter, RNRegistered Nurse1538450713
  15. Christine Carter, M.S., CCC-AAudiologist1922165810
  16. Christopher Carter, PSYDPsychologist1558343764
  17. Christopher Carter, LICSWClinical Social Worker1134229743
  18. Danielle Carter, PHARMD, RPHPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1922310564
  19. Donnell Carter, CRNACertified Registered Nurse Anesthetist1427238039
  20. Erin CarterBehavior Analyst1235692856
  21. Harmony Carter, M.D.Anesthesiology Physician1821230293
  22. James Carter, M.D.Internal Medicine Physician1518051531
  23. Jocelyn Carter, M.D.Internal Medicine Physician1184730103
  24. Katharine Carter, MDSurgery Physician1700896214
  25. Kristen Carter, FNPFamily Nurse Practitioner1083273593
  26. Kristen Carter, NPNurse Practitioner1669021630
  27. Lauren Carter, PT, DPTPhysical Therapist1104381698
  28. Lindsay Carter, M.D.Pediatrics Physician1487859096
  29. Makaya Carter, NURSE PRACTITIONERNurse Practitioner1487481131
  30. Marguerite Carter, MBBCHStudent in an Organized Health Care Education/Training Program1699450585
  31. Nadia Carter, NPPsychiatric/Mental Health Nurse Practitioner1962794370
  32. Rosemary CarterCommunity Health Registered Nurse1700704855
  33. Saneeyyah Carter, RNRegistered Nurse1013351634
  34. Sara CarterPhysical Therapist1255637401
  35. Stuart Carter, PH.D.Cognitive & Behavioral Psychologist1992731723
  36. Alexander Carterson, M.D., PH.D.Student in an Organized Health Care Education/Training Program1801218839
  37. Cezanne Cartier, R.N. NPAdult Health Nurse Practitioner1164684551
  38. Susan Cartier, M.D.Anesthesiology Physician1104947340
  39. Leah Cartmell, LCSWSocial Worker1265910962
  40. Samuel Cartmell, MDDiagnostic Radiology Physician1609365493
  41. Laura Cartwright, RNPediatric Nurse Practitioner1326507310
  42. Marcy Carty, MD, MPHInternal Medicine Physician1326038928
  43. Daniela Carusi, MD MSCObstetrics & Gynecology Physician1639136096
  44. Alessandra Caruso, PHDPsychologist1790206852
  45. Alexa Caruso, ODOptometrist1881218634
  46. Danette Caruso, M.A.Mental Health Counselor1750719449
  47. Jennifer Caruso, PA-CPhysician Assistant1699437434
  48. Lisa Caruso, M.D.Geriatric Medicine (Internal Medicine) Physician1316922099
  49. Allison Carvajal, NPFamily Nurse Practitioner1437751872
  50. Daniela CarvajalStudent in an Organized Health Care Education/Training Program1932984929

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.