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 18 of 19.
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
- Marlena ThompsonSocial Worker1235719014
- Sallay Thulla, MAMental Health Counselor1962237545
- Gail Thursby, CCC-SLPSpeech-Language Pathologist1154684900
- Kristine Thurston, M.S., BCBABehavior Analyst1174986111
- Tara Thurston, D.O.Pediatrics Physician1790830495
- Padraig TittemoreCounselor1841118767
- Alison Towns, DMDDentist1104494228
- David Tracy, MDOphthalmology Physician1225020316
- Donna TranBehavior Technician1497313076
- Quynh Tran, PSY.D.Clinical Psychologist1841983723
- Win Travassos, MDGastroenterology Physician1861480220
- Julie TraversSpeech-Language Pathologist1205641917
- Kim Travis, OTR/LOccupational Therapist1578351474
- Phinehas TreptowBehavior Technician1780140327
- Amanda Tresback, MSWMental Health Counselor1306232897
- Kimberly Tresch, M.D.Pediatrics Physician1992785125
- Michelle Troyer, MSW, LICSWSocial Worker1285203240
- Ani-I Tsai, DMDPeriodontics1699830596
- Sarah TsakalakosBehavior Analyst1043017080
- Lisa Tylus, AGNP-CNurse Practitioner1316323751
- Katherine Tyros, DMDDentist1457557399
- Patricia UrenaBehavior Technician1508352345
- Sandra Usher, CNPNurse Practitioner1487833745
- Grace Valaparla, N.P.Family Nurse Practitioner1285068197
- Janaki Varadhan, MDSurgery Physician1619957628
- Tori VargasSocial Worker1639095003
- Sherly Varghese, PT, MSPTPhysical Therapist1831322296
- Ani Varzhapetyan, PTPhysical Therapist1386890465
- Suzanne Vazquez, FNP-BCFamily Nurse Practitioner1134854524
- Maite Vejar MezaBehavior Technician1205317708
- Krystal Velazquez-Bergeron, C.A.G.S., ED.M.Counselor1437414265
- Lenny VertierBehavior Analyst1255142543
- Donna Vezina, COTA/LOccupational Therapy Assistant1891076188
- Nicolle VieiraBehavior Technician1194410837
- Sherrie Vlahakis, LSCMental Health Counselor1063978815
- Andrea Vosbikian, O.D.Optometrist1144453903
- Bethany Vrouhas, NPNurse Practitioner1417403650
- Alanna WagmanBehavior Analyst1417419805
- Carey Wagner, LICSWClinical Social Worker1720668197
- Zipporah Waithaka, FNP-BCFamily Nurse Practitioner1508549320
- Kenneth WalkerMassage Therapist1194232009
- Constance Wall-Haas, DNPPediatric Nurse Practitioner1629046644
- Marcia Walsh, N.P.Acute Care Nurse Practitioner1225068299
- Sarah Walsh, M.A.,Mental Health Counselor1770992349
- Clifford Walters, DMDGeneral Practice Dentistry1578532784
- Molly WanekSpeech-Language Pathologist1013496876
- Xueling WangCounselor1861310781
- Ying WangBehavior Analyst1487212023
- Paul WasswaPharmacist1760328736
- Nora Watson, PA-CPhysician Assistant1538507793
The largest Massachusetts cities
- Boston41,865
- Worcester13,166
- Springfield8,553
- Cambridge5,145
- Brockton4,287
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.