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 162 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. Deyanina Corzo, MDPediatrics Physician1366409526
  2. Elizabeth Coscia, LICSWClinical Social Worker1063234920
  3. Christopher Cosgriff, MD, MPHCritical Care Medicine (Internal Medicine) Physician1164982690
  4. Garth Cosgrove, MD, FRCSCNeurological Surgery Physician1649386988
  5. Lauren Cosgrove, OTRLOccupational Therapist1730208745
  6. Peter CosgrovePediatrics Physician1154741130
  7. A Benedict Cosimi, MDSurgery Physician1184614364
  8. Lisa Cosimi, M.D.Infectious Disease Physician1154436111
  9. Elif CoskunStudent in an Organized Health Care Education/Training Program1558229336
  10. Emily Coskun, MDNeurology Physician1326205790
  11. Virgenmina CosmeSocial Worker1154518942
  12. Chelsea CosnerChild & Adolescent Psychiatry Physician1003393380
  13. Zoe Cosner, MDRadiation Oncology Physician1891264081
  14. Zachary CostStudent in an Organized Health Care Education/Training Program1699478826
  15. Alexa Costa, NP-CFamily Nurse Practitioner1083097778
  16. Chloe CostaStudent in an Organized Health Care Education/Training Program1417749359
  17. Daniel Costa, M.D.Hematology & Oncology Physician1942418900
  18. Diana Costa, RNRegistered Nurse1447524160
  19. Elise CostaStudent in an Organized Health Care Education/Training Program1780386052
  20. Jillian Costa, NPPediatric Nurse Practitioner1134667991
  21. Meaghan Costa, DPTPhysical Therapist1124887815
  22. Sarah Costa, PTPhysical Therapist1962024240
  23. Gilson Costa Fernandes Filho, M.D.Clinical Cardiac Electrophysiology Physician1194106369
  24. Christian Carlo Costales, DPMPodiatrist1285373217
  25. Luis CostalesStudent in an Organized Health Care Education/Training Program1215886734
  26. Alexandra CostantinoStudent in an Organized Health Care Education/Training Program1861250078
  27. Christina Costantino, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1912311036
  28. Tracey Costantino, NPFamily Nurse Practitioner1295779890
  29. Thao Costanza, AGPCNPGerontology Nurse Practitioner1114433323
  30. Mark Costanzo, NPPediatric Nurse Practitioner1659850345
  31. Karen Costas, RDPediatric Nutrition Registered Dietitian1730278870
  32. Casey CostelloHealth Educator1245874346
  33. Daniel Costello, M.D.Neurology Physician1033197116
  34. Eileen Costello, MDPediatrics Physician1629053673
  35. Eileen Costello, MSN, RN, CPN,CPNP-PCPediatric Nurse Practitioner1649645920
  36. Erin Costello, R.N.Registered Nurse1710239892
  37. Jacqueline CostelloClinical Social Worker1578439386
  38. Jessica Costello, RNNurse Practitioner1255111514
  39. Lauren Costello, RN, NPPsychiatric/Mental Health Nurse Practitioner1992087134
  40. Meaghan Costello, PTPhysical Therapist1366569303
  41. Meghan Costello, MAStudent in an Organized Health Care Education/Training Program1730878067
  42. Sara Costello, MA CCC-SLPSpeech-Language Pathologist1770017980
  43. Sue Costello, LICSWClinical Social Worker1699831545
  44. Amanda Costello Riordan, DMDGeneral Practice Dentistry1992497887
  45. Karen Costenbader, MD MPHRheumatology Physician1447216825
  46. Brienne Costigan, PHARMD, BCPPSPediatric Pharmacist1669008777
  47. Danielle CostiganAnatomic Pathology Physician1700332681
  48. Charles Cote, MDPediatrics Physician1134110265
  49. Devan Cote, MDAnesthesiology Physician1528597887
  50. Erin Cote, DPTPhysical Therapist1255455283

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.