NPPES file of Aug 9, 2026

Doctors and health care providers in Lexington, MA

1,467 individual NPPES records list a practice address in Lexington, 32nd of 406 Massachusetts cities. The largest group is mental health counselor: 429, 29% of the city's records, against 8% across Massachusetts. Page 21 of 30.

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

Lexington in Massachusetts

  • Rank in Massachusetts32nd of 406 cities by records
  • Share of the state0.7% of Massachusetts's records
  • Specialties present25 or more taxonomy codes
  • Top three groups44.4% of all records
  • Mental Health Counselor rank9th of the 10 Massachusetts cities with the most

Compared with Massachusetts as a whole, Lexington has 8.1× the state's share of community health worker records and 0.15× its share of student in an organized health care education/training program records.

Providers in Lexington, alphabetically

  1. Emilie O'BrienOccupational Therapist1366119737
  2. Leslie O'Brien, MSW, LICSWClinical Social Worker1497067631
  3. Mary O'BrienMental Health Counselor1275839433
  4. Colin O'Connor, PT, DPTPhysical Therapist1205375060
  5. Emma O'Keefe, NPWomen's Health Nurse Practitioner1972561355
  6. Jennifer O'Keeffe, PH.D.Psychologist1225107964
  7. Eamon O'LearyCommunity Health Worker1366287294
  8. Michael O'NeillMental Health Counselor1912237520
  9. Elizabeth O'Shea, NPWomen's Health Nurse Practitioner1265638019
  10. Nupoor OakMental Health Counselor1295659829
  11. Julie Obrien, MED, LMHCMental Health Counselor1982732293
  12. Seung Hee Oh, MAMental Health Counselor1083240709
  13. Kyoko OhashiProfessional Counselor1437931987
  14. Margaret Oidtmann, MAMental Health Counselor1871837666
  15. Chisom OkpokoMental Health Counselor1447112198
  16. Sophia OldsmanBehavior Technician1861035297
  17. Daniel Olsen, DDSGeneral Practice Dentistry1346359536
  18. Kristin Olsen-Smith, D.D.S.General Practice Dentistry1588997217
  19. Beverly Ong, FNP-BCPrimary Care Nurse Practitioner1356232896
  20. Larry OrkCommunity Health Worker1124722376
  21. Daniel OrtizMental Health Counselor1043723034
  22. Abigail Ortiz-MillerCounselor1700113495
  23. Judith Osher, PSY.D.Clinical Psychologist1467519041
  24. Dana Oshiro, LICSWClinical Social Worker1083761233
  25. Salvatore Pace, M.ED., CCC., SLPSpeech-Language Pathologist1699914754
  26. Shannon Pacella, PT, DPTPhysical Therapist1164976262
  27. John Pallotta, DMDGeneral Practice Dentistry1114024007
  28. John Pallotta, DMDGeneral Practice Dentistry1871675199
  29. Michelle Palumbo, MDPediatrics Physician1649430356
  30. Samuel Pang, M.D.Reproductive Endocrinology Physician1508853581
  31. Victoria PangiaMental Health Counselor1316518632
  32. Amelia Parent, SLPSpeech-Language Pathologist1841860368
  33. Kenneth Park, PHDClinical Psychologist1457392912
  34. Maytilda Park, RNRegistered Nurse1144104019
  35. Amelia Parks, MFTMental Health Counselor1912568429
  36. Zachary Parsons, LIC.AC.Acupuncturist1508018540
  37. Lucy Partridge, NPFamily Nurse Practitioner1407214240
  38. Alka PatelAnesthesiology Physician1649143538
  39. Amy Patel, LMHCMental Health Counselor1912706979
  40. Bhumi Patel, DMDGeneral Practice Dentistry1003070418
  41. Manisha PatelPharmacist1417544271
  42. Mansi Patel, MPH, RDRegistered Dietitian1356224786
  43. Niravkumar PatelInternal Medicine Physician1710387915
  44. Rashmi Patel, PHARMACISTPharmacist1851997977
  45. Rina PatelFamily Nurse Practitioner1235615659
  46. Robert Patterson, MDResearch Study Specialist1265400964
  47. Tracy Patterson, DMD, MSDOrthodontics and Dentofacial Orthopedics Dentistry1588771703
  48. Clancey Paul, LICSWClinical Social Worker1992863377
  49. Welch PaulCounselor1417252784
  50. Samuel Pauli, M.D,Reproductive Endocrinology Physician1295918027

The largest Massachusetts cities

  1. Boston41,865
  2. Worcester13,166
  3. Springfield8,553
  4. Cambridge5,145
  5. Brockton4,287

All of Massachusetts →

How to read this directory

Lexington, Massachusetts appears in the CMS National Plan and Provider Enumeration System with 1,467 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 Lexington - 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 Lexington 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 Lexington is weighted toward Mental Health Counselor (429 clinicians, followed by Clinical Social Worker with 156 and Speech-Language Pathologist with 66). 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, Lexington reports roughly 21 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, Developmental Therapist is the most prominent one with no provider currently listing a Lexington practice address, a coverage gap Lexington patients typically fill by traveling to a larger nearby hub.

For Lexington 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 Lexington, MA?

There are 1,467 registered healthcare providers in Lexington, MA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Lexington?

The most common specialties in Lexington are Mental Health Counselor, Clinical Social Worker, Speech-Language Pathologist, Clinical Psychologist, Physical Therapist. Mental Health Counselor has the most providers with 429.

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.