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 13 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. Sheila Morehouse, M.D.Pediatrics Physician1194744367
  2. Kiersten Morelli, M. ED., BCBA, LABABehavior Analyst1881440956
  3. Jose MoretaBehavior Technician1649860628
  4. Grace Morgan, BCBABehavior Analyst1912694126
  5. Steven Morgenstern, M.D.Internal Medicine Physician1053377390
  6. Marie Morrier, PT, DPTPhysical Therapist1922895267
  7. Christina MorrisonBehavior Technician1124970801
  8. Maureen MorseOccupational Therapy Assistant1235567199
  9. Ronald MubiitoMental Health Counselor1396488557
  10. Martin MugerwaMental Health Counselor1194436907
  11. Philip Muliane, DMDOral and Maxillofacial Surgery (Dentist)1316094857
  12. Dino Murguz, RPHPharmacist1659984318
  13. Anna Murphy, FNP-BCFamily Nurse Practitioner1912295130
  14. Kenneth Murphy, MDCardiovascular Disease Physician1063452027
  15. Laura Murphy, NPFamily Nurse Practitioner1174166763
  16. Meaghan Murphy, M.S. OTR/LOccupational Therapist1346521689
  17. Kathleen Muse, N.P.Nurse Practitioner1619415650
  18. Tracy Mushrow, COTAOccupational Therapy Assistant1275658767
  19. Jamillah NakanwagiMental Health Counselor1720843592
  20. Rashidah NakijobaFamily Nurse Practitioner1467151720
  21. Dores NalwangaBehavior Technician1528810967
  22. Mariam Namirembe Serwanga, HOME HEALTH AIDECounselor1114538956
  23. Ajay Nanavati, MDInternal Medicine Physician1811905961
  24. Catherine Napoli, PA-CPhysician Assistant1467130104
  25. Elizabeth Natale, RD, LDNRegistered Dietitian1477982627
  26. Vijay Nayak, MDOtolaryngology Physician1083602163
  27. Rachel NegrisOptometrist1942365937
  28. Melvin NemkovInternal Medicine Physician1649325283
  29. Cassandra NewtonMental Health Counselor1417826538
  30. Jennifer NguyenBehavior Technician1689230625
  31. Tuyenhan NguyenMental Health Counselor1457240756
  32. Kimberly NicholsClinical Social Worker1558842385
  33. Katherine Nickley, M.D.Otolaryngology Physician1598008997
  34. Hilda Nkugwa, RNRegistered Nurse1245805662
  35. Sheila Nobrega, BSDevelopmental Therapist1528240835
  36. Bruce NsubugaPsychiatric/Mental Health Nurse Practitioner1013500784
  37. Ariana NunezBehavior Technician1801649082
  38. Kylie NuttallBehavior Analyst1386210722
  39. Josline Nyagahima Thompson, RNRegistered Nurse1679083927
  40. Catherine Nyanjui, RNRegistered Nurse1952272460
  41. Eliza O'Brien, LICSWClinical Social Worker1669807459
  42. Kathleen O'Brien, R.PHPharmacist1235380916
  43. Caley O'ConnellBehavior Analyst1699255661
  44. Meaghan O'NeillBehavior Technician1023592680
  45. Caroline OberaFamily Nurse Practitioner1295305233
  46. Keith Ohara, PTPhysical Therapist1417948100
  47. Julie Okech, AGPCNP-BCGerontology Nurse Practitioner1417784760
  48. Jessica Olson, D.P.M.Foot & Ankle Surgery Podiatrist1659799971
  49. Jeremy OneilPsychiatric/Mental Health Nurse Practitioner1932823382
  50. Kaley Oneill, NPFamily Nurse Practitioner1649042631

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.