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 8 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. Clothilde Hallinan, MSWClinical Social Worker1740877141
  2. Ali HameedBehavior Technician1306798483
  3. Cecily Hamill, MD, PHDOphthalmology Physician1265676928
  4. Russell Hamilton, DPMPodiatrist1316915572
  5. Sharon Hanebury, LMHCMental Health Counselor1689736357
  6. Heather Hansson, FNP-BCFamily Nurse Practitioner1407131113
  7. Peter Hantzis, ED.D.Psychologist1912195926
  8. James Harburger, MDPsychiatry Physician1245284819
  9. Linda HardcastleMental Health Counselor1104648187
  10. Jonathan Harding, M.D.Geriatric Medicine (Internal Medicine) Physician1548295330
  11. Sarah Hardy, MSWSocial Worker1174938427
  12. Jonathan Harland, M.D.Psychiatry Physician1134207368
  13. Dorly HarperBehavior Technician1073201513
  14. Kellie Harries, BCBABehavior Analyst1083136493
  15. Grace HartDentist1386404952
  16. Laura Hart, MS CCC SLPSpeech-Language Pathologist1588861975
  17. Grace HaskellSpeech-Language Pathologist1619839610
  18. Nausheen Hassan, M.D.Internal Medicine Physician1114108966
  19. Martha Hauston, M.ED. M.A., L.M.H.C.Mental Health Counselor1558516625
  20. Cristina Haverty, ATCAthletic Trainer1295977072
  21. Kristy Hawley, BCBA LABABehavior Analyst1568902971
  22. Christine Hayes, MDMOHS-Micrographic Surgery Physician1518958297
  23. Christopher HaynesMental Health Counselor1134051410
  24. Kimberly Headley-JeffreyBehavior Technician1093410110
  25. Sara HeaphySocial Worker1538643457
  26. Caitlin Heaton, AUD.Audiologist1447950449
  27. Brian Henderson, LMHC, LMFTMarriage & Family Therapist1659449387
  28. Brooke Henderson, COTAOccupational Therapy Assistant1649778317
  29. Cathy Henderson, LMHCMental Health Counselor1104983378
  30. Mark Henry, MDUrology Physician1104211333
  31. Siena Henry, COTA/LOccupational Therapy Assistant1710470984
  32. Joyce Herman, MAMental Health Counselor1023221025
  33. Max HigginbottomBehavior Technician1972350833
  34. Patricia Higgins, LCSWClinical Social Worker1285768150
  35. Cathlyn Hill, MSW LICSWSocial Worker1407969884
  36. Lisa Hill, PMHCNSPsychiatric/Mental Health Clinical Nurse Specialist1932545324
  37. Lauren Hittner, MDPediatrics Physician1508025149
  38. Anna Hoang, PHARMDPharmacist1871171504
  39. Katie Hodge, BCBABehavior Analyst1598549487
  40. Katherine HoegDentist1174319933
  41. Susan Hollis, LICSWClinical Social Worker1629176607
  42. Bruce Holstein, MDPsychiatry Physician1205880267
  43. Audrey HoltBehavior Analyst1225817893
  44. Pamela Holway, LICSWSocial Worker1821002742
  45. Jessica Hootnick, M.D.Otolaryngology Physician1265721336
  46. Julie Horns, MAMental Health Counselor1245355023
  47. Sarah HorrocksMarriage & Family Therapist1972663540
  48. Natalie Howard, CCC-SLPSpeech-Language Pathologist1023194677
  49. Terry Howard, M.D.Obstetrics & Gynecology Physician1033178629
  50. Elizabeth HoytOccupational Therapy Assistant1467105833

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.