NPPES file of Aug 9, 2026

Doctors and health care providers in Cambridge, MA

5,145 individual NPPES records list a practice address in Cambridge, 4th of 406 Massachusetts cities. The largest group is clinical social worker: 545, 11% of the city's records, against 8% across Massachusetts. Page 36 of 103.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in Cambridge

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Cambridge in Massachusetts

  • Rank in Massachusetts4th of 406 cities by records
  • Share of the state2.3% of Massachusetts's records
  • Specialties present25 or more taxonomy codes
  • Top three groups22.6% of all records
  • Clinical Social Worker rank4th of the 10 Massachusetts cities with the most

Compared with Massachusetts as a whole, Cambridge has 4.1× the state's share of advanced practice midwife records and 0.56× its share of speech-language pathologist records.

Providers in Cambridge, alphabetically

  1. Sherry Graham, M.D.Family Medicine Physician1104811611
  2. Emer GrallAdult Health Nurse Practitioner1811248719
  3. Grace Granahan, SLPSpeech-Language Pathologist1245172287
  4. Caralyn Granato, PHARMDPharmacotherapy Pharmacist1306524475
  5. Melisa GranoffStudent in an Organized Health Care Education/Training Program1659020436
  6. Virginia Grassa, NPNurse Practitioner1982639464
  7. Christina Grassi, M.D.Ophthalmology Physician1306228515
  8. Agnes Graves, M.D.Internal Medicine Physician1932160934
  9. Laurie Gray, M.D.Child & Adolescent Psychiatry Physician1053575605
  10. Lorraine Gray, PH.D.Clinical Psychologist1336297514
  11. Marianne Gray, MDInternal Medicine Physician1770718322
  12. Stephanie GrayMental Health Counselor1144887696
  13. Allan Green, MD, PHDInternal Medicine Physician1427120344
  14. Christopher Green, MSW, L.I.C.S.W.Clinical Social Worker1265661631
  15. Elizabeth Green, CNPNurse Practitioner1770182230
  16. Jenna GreenSurgical Physician Assistant1164811824
  17. Jennifer Green, MDSurgery of the Hand (Surgery) Physician1962524785
  18. Lauren GreenMental Health Counselor1053169524
  19. Marjorie Green, M.D.Gynecology Physician1871581546
  20. Patricia Green Cameron, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1689209397
  21. Chloe Greenbaum, PH.D.Health Service Psychologist1104358696
  22. Pamela Greenberg, M.A. COUNSELING PSYCMental Health Counselor1700339330
  23. Susan Greenberg, APRNPediatric Nurse Practitioner1255479549
  24. Richard Greene, PHDPsychologist1396837738
  25. Tammy Greene, LMHC, MAMental Health Counselor1588688410
  26. Tracy Greenfield, LMHCMental Health Counselor1699844100
  27. Diane GreenleafCommunity Health Registered Nurse1598316044
  28. E Benjamin Greenleaf, RPHPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1790380327
  29. Deborah Greenman, M.D.Psychiatry Physician1689725350
  30. Emily GreensteinAcupuncturist1326145715
  31. Jennifer Greenwold, M.D.Psychiatry Physician1912102302
  32. Erik Gregory, PHDMental Health Counselor1073991725
  33. Corrine GreisBehavior Technician1386150696
  34. Ira Grenadir, D.P.M.Podiatrist1407892086
  35. Isabelle Grenier, LMHCMental Health Counselor1417670597
  36. Barry Griffin, PA-CSurgical Physician Assistant1912158874
  37. Cristin Griffin, PSY.D.Clinical Psychologist1750619359
  38. Marion Griffin, FNPSchool Nurse Practitioner1417141847
  39. Nancy Griffin, RNAmbulatory Care Registered Nurse1356768642
  40. Elzbieta Griffiths, M.D.Anatomic Pathology Physician1881626323
  41. Maria Grig, MDAnesthesiology Physician1801453246
  42. Allison GrimesMental Health Counselor1437553286
  43. Lily GrobSocial Worker1255229241
  44. Anthony Gross, PSY.D.Clinical Psychologist1538250352
  45. Donna Gross, NPNurse Practitioner1760401285
  46. Katherine GrossStudent in an Organized Health Care Education/Training Program1093633935
  47. Lawrence GrossPsychiatry Physician1134756711
  48. Robert Gross, ODOptometrist1245204403
  49. Zoey Gross, CNMAdvanced Practice Midwife1649837477
  50. Daniel Groves, M.D.Urology Physician1124445168

The largest Massachusetts cities

  1. Boston41,865
  2. Worcester13,166
  3. Springfield8,553
  4. Brockton4,287
  5. Milford3,459

All of Massachusetts →

How to read this directory

Cambridge, Massachusetts appears in the CMS National Plan and Provider Enumeration System with 5,145 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 Cambridge - 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 Cambridge 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 Cambridge is weighted toward Clinical Social Worker (545 clinicians, followed by Student in an Organized Health Care Education/Training Program with 319 and Internal Medicine Physician with 300). 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, Cambridge reports roughly 73.5 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, Behavior Technician is the most prominent one with no provider currently listing a Cambridge practice address, a coverage gap Cambridge patients typically fill by traveling to a larger nearby hub.

For Cambridge 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 Cambridge, MA?

There are 5,145 registered healthcare providers in Cambridge, MA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Cambridge?

The most common specialties in Cambridge are Clinical Social Worker, Student in an Organized Health Care Education/Training Program, Internal Medicine Physician, Mental Health Counselor, Social Worker. Clinical Social Worker has the most providers with 545.

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.