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 30 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. Carol Palmer, RNPediatric Registered Nurse1356419949
  2. Elizabeth PaltsevaPsychologist1164116513
  3. Grace PancostMental Health Counselor1750275376
  4. Pierre PanoyanPharmacist1215210356
  5. Paul Pantano, DPMPodiatrist1023112604
  6. Daphne Papadopoulos, PSYDPsychologist1437483757
  7. Tyler PapciakSocial Worker1003639337
  8. Jennifer Papp, MS, OTR/L, CEISPediatric Occupational Therapist1700015310
  9. Gerald ParadelaPhysical Therapist1083342901
  10. Lori ParentCounselor1285792267
  11. Maley Parilla, LCSWSchool Social Worker1033737242
  12. Stephanie Paris-Whitney, O.D.Corneal and Contact Management Optometrist1265424758
  13. Shem ParkPharmacist1225625031
  14. Megan ParkerSocial Worker1124629126
  15. Allison PartridgeOrthopedic Physical Therapist1750924148
  16. Jessica PassarettiCounselor1497317341
  17. Bhuren Patel, R.PH.Pharmacist1255662201
  18. Harshida Patel, MS OTR/LOccupational Therapist1093963274
  19. Hayley Patel, AUDAudiologist1740823277
  20. Jay PatelOptician1821833716
  21. Reena Patel, PTPhysical Therapist1770887861
  22. Sangita PatelPharmacist1447856331
  23. Tracy PatersonBehavior Analyst1932541281
  24. Nazia PathanDentist1164122891
  25. Manuela PatinoBehavior Technician1730646068
  26. Carmen PaulinoBehavior Technician1437610193
  27. Soraya PaultreCounselor1558982280
  28. Susan PayneCertified Registered Nurse Anesthetist1447370838
  29. Kerry Pearl, M.S., CCC-SLPSpeech-Language Pathologist1962849364
  30. Rebecca Pearsall, LICSWMental Health Counselor1891056818
  31. Jayda PearsonMental Health Counselor1689450041
  32. Micayla Pedrick, PT, DPTPhysical Therapist1811415086
  33. April PellegriniAthletic Trainer1922527761
  34. Kristen PellerinBehavior Analyst1093027500
  35. Elena Peltola, CPSMental Health Counselor1194413724
  36. Yifan PengMental Health Counselor1972340081
  37. Alan Penzias, M.D.Reproductive Endocrinology Physician1497701866
  38. Paula PereiraBehavior Technician1760048581
  39. Faith Perez, LICSWClinical Social Worker1992507966
  40. Genesis PerezBehavior Technician1235796335
  41. Jean PerezCounselor1477932176
  42. Rocio Perez, MACounselor1396401519
  43. Osmerlyn Perez De Los SantosOccupational Therapy Assistant1184331886
  44. Nicole Perez Elias, LCSWClinical Social Worker1114634870
  45. Betsy Perez GonzalezBehavior Technician1194699447
  46. Kathryn Perkins, PTAPhysical Therapy Assistant1215283031
  47. W. Vincent Perrelli, MDGeriatric Medicine (Internal Medicine) Physician1902806219
  48. Sarah PerrimonMental Health Counselor1487322236
  49. Joanne PeskowitzSocial Worker1831676741
  50. Jessica Peters, MDEmergency Medicine Physician1467403931

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.