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 36 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. Cheryl ShaoDentist1992348650
  2. Victoria Sharaga, M.S., CCC-SLPSpeech-Language Pathologist1912683913
  3. Shraya SharmaEndodontics1558981142
  4. Courtney Shea, OTR/LOccupational Therapist1215309745
  5. Lori Shea, NPNurse Practitioner1942218615
  6. Meghan Shea, LICSWClinical Social Worker1295212116
  7. Urusa Sheikh, PA-CPhysician Assistant1609414085
  8. Carol SheingoldClinical Social Worker1336627231
  9. Kathryn Sheppard, PA-CPhysician Assistant1538390943
  10. Kristen Shoar, NPAcute Care Nurse Practitioner1912234113
  11. Mawya Shocair, M.D.Nephrology Physician1457308140
  12. Sarah ShouldisDevelopmental Therapist1407460637
  13. Eleanor Shrage, C.E.I.S,M.S.WDevelopmental Therapist1053591412
  14. Lisa Shrestha, NPPsychiatric/Mental Health Nurse Practitioner1023854213
  15. Michael Shulkin, DDSDentist1801804174
  16. Luis SierraPsychologist1205699139
  17. George Sigel, M.D.Psychiatry Physician1578526752
  18. Irene SignorelloRegistered Nurse1659731701
  19. Larry Silbert, O.D.Optometrist1891969408
  20. Lee Scott Silk, M.D.Interventional Pain Medicine Physician1487693479
  21. Amaliya Silsby, MA, CCC-SLPSpeech-Language Pathologist1750746194
  22. Adrienne Silva, OTOccupational Therapist1336645639
  23. Cullen Silva, CCC SLPSpeech-Language Pathologist1013122373
  24. Jake SilvaCounselor1891614392
  25. Christopher SilverCounselor1326455155
  26. Steven Silverman, LIC. AC.Acupuncturist1033287875
  27. Guerline SimonPsychiatric/Mental Health Nurse Practitioner1780529974
  28. Tushar SinghalCounselor1710536180
  29. Sarah Sirois, RNRegistered Nurse1770321234
  30. Nancy Siska, M.A., M.S., CCC-SLPSpeech-Language Pathologist1538471123
  31. Marion Sitomer, OTPediatric Occupational Therapist1326926346
  32. Emma SkinnerStudent in an Organized Health Care Education/Training Program1154107084
  33. Laura SkinnerMental Health Counselor1578486817
  34. Carol Slade, LICSWClinical Social Worker1043393374
  35. Kelsey SlaterBehavior Analyst1396131454
  36. Judith Sleeper, MSWSocial Worker1063692465
  37. Mark Slovenkai, M.D.Orthopaedic Foot and Ankle Surgery Physician1871530980
  38. Heather Smidt, ACUPUNCTURISTAcupuncturist1528577228
  39. Denise Smigielski, RPHPharmacist1962081729
  40. Ann Smileyphippen, M.S.C.C.C.S.L.P.Speech-Language Pathologist1548380587
  41. Allison Smith, M.A. CCC-SLPSpeech-Language Pathologist1801077656
  42. Allison Smith, PH.D.Clinical Psychologist1245634302
  43. Ann Smith, M.S., CF-SLPSpeech-Language Pathologist1750658787
  44. Ashley SmithBehavior Technician1083100143
  45. Jacqueline SmithOptometrist1508558024
  46. Jennifer Smith, CRNACertified Registered Nurse Anesthetist1952694432
  47. Julia Smith, MSWClinical Social Worker1669856472
  48. Michael Smith, MS, CCC-SLPSpeech-Language Pathologist1306967682
  49. Paula SmithCommunity Health Worker1720874068
  50. Robert Smith, PH.D.Counselor1497714703

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.