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 295 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. Laurence Guay, MDGastroenterology Physician1407265333
  2. Cassandra Gucwa, PT, DPTPhysical Therapist1104294008
  3. Pamela Gudino, MSN, FNPFamily Nurse Practitioner1346720109
  4. Katharine GuditzClinical Social Worker1659298487
  5. Eden GudonisSchool Social Worker1558760827
  6. Racine Gue, M.D.Diagnostic Radiology Physician1811348626
  7. Thierry Guedj, PH.D.Clinical Psychologist1649354895
  8. Miren Guenechea-Sola, M.D.Allergy & Immunology Physician1902118649
  9. Jeffrey Guenette, M.D.Diagnostic Radiology Physician1093154056
  10. Donna Guenther, ANPNurse Practitioner1023120235
  11. Geoffrey Guenther, MD, MPHPediatric Infectious Diseases Physician1083111769
  12. Meagan GuentherCertified Registered Nurse Anesthetist1184928137
  13. Guy Guenthner, MDOrthopaedic Surgery Physician1699418855
  14. Marianne Guerard-Geary, R.N.Registered Nurse1245446632
  15. Jennifer Guerin, DPT, MSOrthopedic Physical Therapist1487877585
  16. Nicole Guerin, PT, DPTPhysical Therapist1801158654
  17. Lisa Guerra, MS, CCC-SLPSpeech-Language Pathologist1710128616
  18. Selina Guerra, PHDCounseling Psychologist1346799137
  19. Shakiya GuerraCase Manager/Care Coordinator1013637958
  20. Aj Guerrero, LMHCMental Health Counselor1922520840
  21. Patricia Guerrero, DDSOrofacial Pain Dentistry1124686100
  22. Christiani Guerrero Gatto, CNMAdvanced Practice Midwife1477649333
  23. Claude Guerrier, M.D.Diagnostic Radiology Physician1447566591
  24. Ismaelle GuerrierLicensed Practical Nurse1639759657
  25. Marie Guerrier, NPAdult Health Nurse Practitioner1356588792
  26. Samia GuerrierBehavior Technician1932813318
  27. Adriana Guerriero, DMDStudent in an Organized Health Care Education/Training Program1962360651
  28. Roxanne Guerriero, ANPNurse Practitioner1104990522
  29. Madison GuertinClinical Social Worker1700769882
  30. Wynter GuessStudent in an Organized Health Care Education/Training Program1518713619
  31. Alyshia Guettin-AguirreAddiction (Substance Use Disorder) Counselor1013698240
  32. Anghelo GuevaraOptician1801241203
  33. Ashley Guevara, LICSWClinical Social Worker1285969386
  34. Carolina Guevara, DMDStudent in an Organized Health Care Education/Training Program1790530889
  35. Borna Guevel, MA MB BCHIR FRCS MPHStudent in an Organized Health Care Education/Training Program1598694929
  36. Aissatou Gueye, NPGerontology Nurse Practitioner1972966216
  37. Seyni Gueye-Ndiaye, M.D.Sleep Medicine (Internal Medicine) Physician1932657822
  38. David Guez, MDVascular & Interventional Radiology Physician1730509621
  39. Gabriela Guez, M.D.Emergency Medicine Physician1285046797
  40. Jocelyn Guggenheim, CPNPPediatric Nurse Practitioner1578851119
  41. Lauren Guggina, M.D.Dermatology Physician1760747984
  42. Jennifer Guglia, MS, NP-CAdult Health Nurse Practitioner1396133435
  43. Livia Guglielmi, LICSWClinical Social Worker1174462733
  44. Kiara GugliettiBehavior Technician1235844721
  45. Dan GuiStudent in an Organized Health Care Education/Training Program1093276487
  46. Haiwen Gui, MDStudent in an Organized Health Care Education/Training Program1841084621
  47. Kimberly Guibone, ACNPAcute Care Nurse Practitioner1427279330
  48. Narinka GuichetteBehavior Technician1225770969
  49. Gail GuidicePhysician Assistant1740064443
  50. Matthew Guido, PA-CPhysician Assistant1063917763

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.