NPPES file of Aug 9, 2026

Doctors and health care providers in Chelmsford, MA

937 individual NPPES records list a practice address in Chelmsford, 56th of 406 Massachusetts cities. The largest group is behavior technician: 80, 9% of the city's records, against 5% across Massachusetts. Page 16 of 19.

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

The 8 largest groups in Chelmsford

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

Chelmsford in Massachusetts

  • Rank in Massachusetts56th of 406 cities by records
  • Share of the state0.4% of Massachusetts's records
  • Specialties present25 or more taxonomy codes
  • Top three groups23.2% of all records

Compared with Massachusetts as a whole, Chelmsford has 3.7× the state's share of behavior analyst records and 0.21× its share of student in an organized health care education/training program records.

Providers in Chelmsford, alphabetically

  1. Danka Samardzic, M.D.Internal Medicine Physician1942268438
  2. Emily Sammartino, LICSWClinical Social Worker1174107353
  3. Jennie Sandberg, M.EDBehavior Analyst1255759932
  4. Brian Sanginario, OPTICIANOptician1659590909
  5. Ismael SantosBehavior Technician1851895676
  6. Michael Sargent, DDSGeneral Practice Dentistry1538208632
  7. Danielle SatBehavior Technician1073007969
  8. Venkata Satyam, M.D.Internal Medicine Physician1851344774
  9. Marcelle Saurman, NPAdult Health Nurse Practitioner1003353012
  10. Christine Savard, RPHPharmacist1902892383
  11. Katelyn Scagnelli, FNP-BCPrimary Care Nurse Practitioner1760634943
  12. David Scaplen, PTOrthopedic Physical Therapist1003915067
  13. Catherine Scappaticci, AUDAudiologist1922754464
  14. Kathryn Scarpelli, P.T.Physical Therapist1104027283
  15. Suzanne Scarpulla, PTPhysical Therapist1508857293
  16. Alexi SchecterClinical Social Worker1083405245
  17. Kasey SchisslerBehavior Analyst1942835475
  18. Lisa Schmidt, OTR/LOccupational Therapist1912181041
  19. Melissa Schuft, PNPPediatric Nurse Practitioner1538333836
  20. Monica Schulman, NPPediatric Nurse Practitioner1083681886
  21. Ann Schummers, NPGerontology Nurse Practitioner1508827734
  22. Martin Schwartz, DDSOral and Maxillofacial Surgery (Dentist)1861456949
  23. Ashley ScottBehavior Analyst1386165579
  24. Kasirye Segwanyi, MACounselor1073703807
  25. Samantha Selfridge, FNP-CFamily Nurse Practitioner1720959125
  26. Judith Seligman, MSWClinical Social Worker1093984544
  27. Dorothy Semonian, NPFamily Nurse Practitioner1568497105
  28. Gianna SencerBehavior Technician1265921282
  29. Sebastian Sepulveda, MDNephrology Physician1558343129
  30. Lisa Sevigny, M.D.Pediatrics Physician1851330948
  31. Bhumika Shah, RPHPharmacist1598082497
  32. Himanshu Shah, DMDGeneral Practice Dentistry1083081285
  33. Paul ShandrowskiPharmacist1134382112
  34. Robert Shannon, MDSpecialist1235130485
  35. Deborah Shannon-ChelmanStudent in an Organized Health Care Education/Training Program1386804573
  36. Krista Shaw, NPGerontology Nurse Practitioner1700346194
  37. Michael Sheehan, DPTPhysical Therapist1578853131
  38. Roy Shen, M.D.Surgery Physician1407831563
  39. Elizabeth Shepherd, PHDClinical Child & Adolescent Psychologist1770774721
  40. David Shi, MDUrology Physician1558704726
  41. Wen-Chih Shih, PTPhysical Therapist1619931771
  42. Svetlana Shimberg, NPNurse Practitioner1982151080
  43. Jessica Ships, ODOptometrist1770205007
  44. Rebecca Shore, M.D.Surgery Physician1053396143
  45. Jeff Shu, D.M.D.General Practice Dentistry1932250768
  46. Daniel Shulman, BCBABehavior Analyst1164914677
  47. Bryan Shultz, LCSWClinical Social Worker1922312784
  48. Beshoy Sidhom, MDFamily Medicine Physician1427545243
  49. Karen Siegel, MSW LICSWSocial Worker1548276652
  50. Ann Marie Sigdestad, LICSWClinical Social Worker1487869301

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

Chelmsford, Massachusetts appears in the CMS National Plan and Provider Enumeration System with 937 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 Chelmsford - 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 Chelmsford 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 Chelmsford is weighted toward Behavior Technician (80 clinicians, followed by Behavior Analyst with 74 and Mental Health Counselor with 63). 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, Chelmsford reports roughly 13.4 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 Chelmsford practice address, a coverage gap Chelmsford patients typically fill by traveling to a larger nearby hub.

For Chelmsford 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 Chelmsford, MA?

There are 937 registered healthcare providers in Chelmsford, MA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Chelmsford?

The most common specialties in Chelmsford are Behavior Technician, Behavior Analyst, Mental Health Counselor, Clinical Social Worker, Physical Therapist. Behavior Technician has the most providers with 80.

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.