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 110 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. Janielle ByronCase Manager/Care Coordinator1134907157
  2. Barbara Byse, MDDiagnostic Radiology Physician1811977226
  3. Gabrielle Cabacab, RDNRegistered Dietitian1033998844
  4. Cecilia CabadasPhysician Assistant1538944814
  5. Carlos Caballero, D.D.S,M.S.DGeneral Practice Dentistry1235387960
  6. Augusto Caballero-Robles, M.D.Endocrinology, Diabetes & Metabolism Physician1144336918
  7. Meghan CabeceirasBehavior Technician1740784941
  8. Donna Cabey, LMHCMental Health Counselor1083494249
  9. Whitney CabezasMental Health Counselor1508320300
  10. Susan Cabot, MDInternal Medicine Physician1124037601
  11. David CabralCase Manager/Care Coordinator1912362823
  12. Heycha Cabral, MABehavior Technician1144937400
  13. Jeimy Cabral, LMHCMental Health Counselor1730621301
  14. Manuel Cabral, MSWSocial Worker1457235434
  15. Sarah Cabral, NPFamily Nurse Practitioner1922547819
  16. Stephanie Cabral, MDStudent in an Organized Health Care Education/Training Program1962070219
  17. Alexandria CabreraGenetic Counselor (M.S.)1710692066
  18. Florenny Cabrera, LCSWClinical Social Worker1225749344
  19. Korine Cabrera, MAStudent in an Organized Health Care Education/Training Program1033736392
  20. Maria Cabrera, LICSWClinical Social Worker1679792808
  21. Mariela CabreraStudent in an Organized Health Care Education/Training Program1891435749
  22. Rafael CabreraStudent in an Organized Health Care Education/Training Program1770402158
  23. Javier Cabrera-Perez, MD, PHDAllergy & Immunology (Internal Medicine) Physician1124523048
  24. Laura CaccamoNurse Practitioner1073290524
  25. Victoria Caccioppoli, PHARMDPharmacist1376988329
  26. Chantel Danielle Cacciotti, M.D.Student in an Organized Health Care Education/Training Program1790048072
  27. Kayla CacedaSocial Worker1740770429
  28. Nadia CacodcarPsychiatry Physician1528687464
  29. Margaret Cadden, PHDStudent in an Organized Health Care Education/Training Program1851901854
  30. Sophia CadeauCase Manager/Care Coordinator1871329482
  31. Reanna CaderNeuroscience Registered Nurse1831024413
  32. Bismarck Cadet, MDInternal Medicine Physician1538127725
  33. Carla Cadet, MDStudent in an Organized Health Care Education/Training Program1215787015
  34. Elizabeth Cadet, MSWSocial Worker1194309153
  35. Lauryn Cadet, FNP-CFamily Nurse Practitioner1992665277
  36. Ruth Cadet, MD, MPHDevelopmental - Behavioral Pediatrics Physician1144843681
  37. Cara CadiganPhysical Therapist1003296187
  38. John Cadigan, MDCardiovascular Disease Physician1497752620
  39. Meredith Cadiz, PTPhysical Therapist1487825774
  40. Kelly Cadogan, NPFamily Nurse Practitioner1871012153
  41. Marilyn Cadogan, RNRegistered Nurse1275461030
  42. Kerry Cafasso, N.PAdult Health Nurse Practitioner1447558374
  43. Julie CaffreyBehavior Technician1164274668
  44. Enrico Cagliero, MDEndocrinology, Diabetes & Metabolism Physician1700877347
  45. Daniel CagneyRadiation Oncology Physician1710362652
  46. Rebecca Cagnina, MDPulmonary Disease Physician1275857807
  47. Pilar Angela Marie CaguioaMental Health Counselor1588206544
  48. Alexis Cahalane, MB,BCH,BAODiagnostic Radiology Physician1053774117
  49. Michael Cahalane, M.D.Surgery Physician1073553731
  50. Lawrence Cahalin, PTPhysical Therapist1871801456

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.