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 35 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. Arianna SaundersBehavior Technician1154883262
  2. Jenna SavignanoCounselor1518210384
  3. Surabhi Saxena, DPTPhysical Therapist1417075441
  4. Ekaterina SaykinaBehavior Analyst1316682651
  5. Michael ScadutoPhysical Therapist1538683008
  6. Julia ScanlanSocial Worker1619823887
  7. Alyse Scanlon, LICSWSocial Worker1194447466
  8. Jennifer Schackner, LCSWClinical Social Worker1497232615
  9. Margaret Schadelbauer, M.ED., CCC/SLPSpeech-Language Pathologist1588898100
  10. Rowyn Schaffner, LICSWClinical Social Worker1821473703
  11. Inez Cheshire SchankerClinical Social Worker1497392393
  12. Lindsay Schelhorn, MS, CCC-SLPSpeech-Language Pathologist1275151052
  13. Arnold Scheller, M.D.Adult Reconstructive Orthopaedic Surgery Physician1871556738
  14. Michelle Schellinger Gutierrez, LICSWClinical Social Worker1083197925
  15. Heatha Schena, APRN, BCFamily Nurse Practitioner1205036902
  16. Pat Schindeler, NPOccupational Health Nurse Practitioner1144255852
  17. Quinn SchlicherStudent in an Organized Health Care Education/Training Program1023998846
  18. Janet Schnee, LMHCMental Health Counselor1508955014
  19. Isabel SchneiderCounselor1568071967
  20. Theresa Schnorr, P.N.P.Pediatric Nurse Practitioner1932257698
  21. Ira SchorClinical Social Worker1104327238
  22. Christine SchouClinical Social Worker1538418702
  23. Roger Schrader, LICSWSocial Worker1922768712
  24. Megan SchreiberBehavior Technician1477038149
  25. Kendra SchroederOccupational Therapy Assistant1740638709
  26. Kathryn Schwab, APRN, BCAdult Health Nurse Practitioner1962697094
  27. Arleen Schwartz, M.EDDevelopmental Therapist1891979092
  28. Joanna Schwartz, M.D.Internal Medicine Physician1316112949
  29. Kelly SchweizerSpeech-Language Pathologist1932343142
  30. Kayla ScottMental Health Counselor1417685157
  31. Letisha Sebakka, NPWomen's Health Nurse Practitioner1598421448
  32. Dhriti SehgalMental Health Counselor1316780893
  33. Nichole Seitz, LMHCMental Health Counselor1255128294
  34. Anna Seitzer, LICSWSocial Worker1447735709
  35. Simon Selwyn, CNPPsychiatric/Mental Health Nurse Practitioner1821576935
  36. Nicole Semon, PT, DPT, PCSPhysical Therapist1043420375
  37. Judith Semonoff, LICSWClinical Social Worker1295751881
  38. Diana SengoobaLicensed Practical Nurse1972005049
  39. Thomas ServidioPhysical Therapist1326887761
  40. Keri Sexton, NPGerontology Nurse Practitioner1871647842
  41. Krina Shah, DPTPhysical Therapist1124810429
  42. Shreyansh Shah, MDNeurology Physician1164657383
  43. Sharon Shaham, MSSpeech-Language Pathologist1033183389
  44. Donnalee Shain, PT,MS,DPTPhysical Therapist1548337660
  45. Samuel Shames, DMDDentist1821020488
  46. Laila Shanaa, RDN, LDNRegistered Dietitian1902459233
  47. Howard Shane, PHDSpeech-Language Pathologist1710953534
  48. Jacqueline Shang, PHARMD, MPHPharmacist1275424590
  49. Mark Shankman, MDInternal Medicine Physician1629028709
  50. Kristen ShannonCounselor1922451434

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.