NPPES file of Aug 9, 2026

Doctors and health care providers in Waltham, MA

2,111 individual NPPES records list a practice address in Waltham, 19th of 406 Massachusetts cities. The largest group is clinical social worker: 234, 11% of the city's records, against 8% across Massachusetts. Page 39 of 43.

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

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

The 8 largest groups in Waltham

  1. Clinical Social Worker234
  2. Physical Therapist173
  3. Behavior Technician166
  4. Mental Health Counselor147
  5. Speech-Language Pathologist120
  6. Social Worker82
  7. Pharmacist78
  8. Occupational Therapist70

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

Waltham in Massachusetts

  • Rank in Massachusetts19th of 406 cities by records
  • Share of the state1% of Massachusetts's records
  • Specialties present25 or more taxonomy codes
  • Top three groups27.1% of all records

Compared with Massachusetts as a whole, Waltham has 9.1× the state's share of gerontology nurse practitioner records and 0.32× its share of student in an organized health care education/training program records.

Providers in Waltham, alphabetically

  1. Andrew ThompsonBehavior Technician1699603944
  2. Clare Thompson, DPTPhysical Therapist1417836362
  3. Karen Thompson, CCC-SLPSpeech-Language Pathologist1790294361
  4. Dana Thomsen, PT, DPTPhysical Therapist1184976987
  5. James Thorne, RPHPharmacist1891555116
  6. Kim Thornton, MDReproductive Endocrinology Physician1992742191
  7. Caroline Tigere, APRN-BCNurse Practitioner1821307398
  8. David Tilley, DPTPhysical Therapist1629491444
  9. Jacqueline TillmanSocial Worker1154090058
  10. Jodi Tippett, APRN BCPsychiatric/Mental Health Nurse Practitioner1083797302
  11. Hadia Tirmizi, M.D.Internal Medicine Physician1235124249
  12. Adrielle Tobias, DPTPhysical Therapist1255898151
  13. Hector Toledo JrBehavior Technician1861058687
  14. Sandra Tollos, MAAudiologist1528531910
  15. Sara Tomasello, DPTPediatric Physical Therapist1255086740
  16. Nirva Tomasian, RPHPharmacist1316307473
  17. Arthur Tong, MBBSDermatology Physician1619942661
  18. Danielle TorreOptometrist1083468482
  19. Haleigh TorresSpeech-Language Pathologist1417799131
  20. Jalessa TownsendClinical Social Worker1174270375
  21. Gabriella TrahantPhysical Therapist1285222646
  22. Kerri TrainorStudent in an Organized Health Care Education/Training Program1366608929
  23. Laura TramontozziCase Manager/Care Coordinator1225896723
  24. Thuy-Van TranPhysical Therapist1053990838
  25. Kimberly TrapassoBehavior Analyst1730517764
  26. Katlyn Troisi, LICSWMental Health Counselor1477211563
  27. Georgios TsakosPhysical Therapist1184007080
  28. Alicia Tsang, RPHPharmacist1043821036
  29. Eleftheria Tsavoussis, PMHCNS-BCAdult Psychiatric/Mental Health Clinical Nurse Specialist1821073586
  30. Shu Wei TsengBehavior Technician1942792155
  31. Arianna TuckBehavior Technician1710449244
  32. Mark Tuler, DPMPodiatrist1700822814
  33. Cailin Turcotte-Good, R.E.A.T., L.M.H.C.Mental Health Counselor1902236557
  34. Abigail TurkingtonFamily Nurse Practitioner1952610156
  35. Jennifer TurnerBehavior Analyst1033411921
  36. Joanne Twombly, MSWClinical Social Worker1891827143
  37. Brittany UtsetDentist1821798562
  38. Dorothy Vacca, ED.D.Psychologist1932124344
  39. Ximena Valderrama CanoDevelopmental Therapist1194553495
  40. John Valentino, D.M.D.General Practice Dentistry1326052465
  41. Michaela Van Antwerp, MS, OTR/LNeurorehabilitation Occupational Therapist1194249094
  42. Geoffrey Van Flandern, MDOrthopaedic Surgery Physician1083670228
  43. Ellen Van Wert, PTPhysical Therapist1710296918
  44. Erik Vandendries, M.D.Hematology & Oncology Physician1427184001
  45. Maureen Vanhoesen, NPAdult Health Nurse Practitioner1326190786
  46. Kristine Vanlenten, NP-C, APRN, BCGerontology Nurse Practitioner1659422426
  47. Alexandria VanoverbergheClinical Social Worker1104609312
  48. Athanasios Vardoulias, M.A., CCC-SLP, TSSLDSpeech-Language Pathologist1528401551
  49. Kristina VargasSocial Worker1437465408
  50. Sara VargasBehavior Technician1629949045

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

Waltham, Massachusetts appears in the CMS National Plan and Provider Enumeration System with 2,111 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 Waltham - 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 Waltham 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 Waltham is weighted toward Clinical Social Worker (234 clinicians, followed by Physical Therapist with 173 and Behavior Technician with 166). 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, Waltham reports roughly 30.2 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.

For Waltham 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 Waltham, MA?

There are 2,111 registered healthcare providers in Waltham, MA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Waltham?

The most common specialties in Waltham are Clinical Social Worker, Physical Therapist, Behavior Technician, Mental Health Counselor, Speech-Language Pathologist. Clinical Social Worker has the most providers with 234.

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.