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 118 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. Rachel Carey, DNPNurse Practitioner1407730773
  2. Susan Carey, M.D.Psychiatry Physician1477509669
  3. Tara Carey, MDAnesthesiology Physician1154649804
  4. Kellianne Carfi, LICSWClinical Social Worker1568945632
  5. Marie Cargill, LIC. AC.Acupuncturist1922175652
  6. Barbara Carginan, RNRegistered Nurse1336385772
  7. Angela Carignan, CRNACertified Registered Nurse Anesthetist1841396629
  8. Charles Carignan, MDGeneral Practice Physician1851626493
  9. Jeremy CariniCertified Registered Nurse Anesthetist1528676533
  10. Mary Carini, LICSWClinical Social Worker1043444367
  11. Christine Carkin, PCNPFamily Nurse Practitioner1952796963
  12. Justin Carl, MSWClinical Social Worker1720439409
  13. Azizi CarleSchool Counselor1386767929
  14. Anna Carleen, MDPediatrics Physician1831650126
  15. Mary Carleen, PAPhysician Assistant1952717647
  16. Emily Carleton, PASurgical Physician Assistant1780235333
  17. Neil Carleton, MD, PHDStudent in an Organized Health Care Education/Training Program1780524256
  18. Patricia Carleton, MSW, LICSWClinical Social Worker1053802710
  19. William Carleton, RDOOptician1508909284
  20. Kathryn CarleyPhysical Therapist1700288610
  21. Margaret Carley, LCSWClinical Social Worker1659742435
  22. Narath Carlile, MDInternal Medicine Physician1841428224
  23. Kathryn Carlin, PA-CPhysician Assistant1710785621
  24. Skyler Carlin, LICSWClinical Social Worker1982289773
  25. Stacy CarlinRegistered Nurse1427468354
  26. Philip Carling, M.D.Infectious Disease Physician1760447296
  27. Gregory Carlisle, DOPediatric Critical Care Medicine Physician1164082913
  28. Catherine Carlo, LICSWClinical Social Worker1649396854
  29. Claire Carlo, M.D.Internal Medicine Physician1336125871
  30. Isabella Carlo, NPNurse Practitioner1710862677
  31. Andrew CarlsonStudent in an Organized Health Care Education/Training Program1104669670
  32. Ann Carlson, RNAmbulatory Care Registered Nurse1598836611
  33. Jeanine Carlson, M.D.Internal Medicine Physician1588603013
  34. Jessica Carlson, PT, DPTPhysical Therapist1740964360
  35. Jonathan Carlson, MD PHDMedical Oncology Physician1063567451
  36. Julia Carlson, LICSWClinical Social Worker1184845265
  37. Karen Carlson, MDInternal Medicine Physician1104809565
  38. Lauren Carlson, MDAnesthesiology Physician1578856746
  39. Nancy Carlson, ODOptometrist1801896824
  40. Rachel CarlsonAnesthesiology Physician1356845416
  41. Ryan Carlson, MD PHDStudent in an Organized Health Care Education/Training Program1003618158
  42. William Carlson, MD PHDCardiovascular Disease Physician1669462180
  43. Britt Carlson Emerton, PHDClinical Psychologist1497040166
  44. Deborah Carlson-Evans, RNRegistered Nurse1336098391
  45. Colleen CarlstonStudent in an Organized Health Care Education/Training Program1689250649
  46. Nancy CarlucciClinical Social Worker1629559893
  47. Brian Carmine, MDSurgery Physician1538335880
  48. Adam CarmodyBehavior Technician1881126720
  49. Maria CarmonaStudent in an Organized Health Care Education/Training Program1447091517
  50. Maryori Carmona, CRNACertified Registered Nurse Anesthetist1053642801

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.