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 15 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
- Stephen Poor, MDOphthalmology Physician1144209685
- Holly Powderly, NPNurse Practitioner1619209053
- Judith Powsner, LICSW, LADCClinical Social Worker1851375844
- Rafael Pupo, M.D.Dermatology Physician1093752685
- Corinne Puzio, MDUrology Physician1558597906
- Rekha Quazi, M.DSpecialist1134184765
- Alicia Quigley, OTR/LOccupational Therapist1063303618
- Krista Rabbitt, M.ED., BCBA, LABABehavior Analyst1023516879
- Chandra Ramanathan, M.D.Pediatrics Physician1053391052
- Victoria Ramos, DMDGeneral Practice Dentistry1427722487
- Argel Ramos ColonBehavior Technician1013728310
- Thomas Ramseur, LICSWClinical Social Worker1538337118
- Sherry Ranjbar, MEDMental Health Counselor1013434513
- Deborah Ratte, DMDDentist1194057760
- Roopa Reddy, M.D.Internal Medicine Physician1871576397
- Diane Reed-Hunt, MSWClinical Social Worker1336507391
- James Reichheld, M.D.Gastroenterology Physician1184683716
- John Reilly, LICSWClinical Social Worker1689884322
- Emily Reiss, MS CCC-SLPSpeech-Language Pathologist1316510340
- Celia Repucci, PTPhysical Therapist1104075779
- Katherine Rice, NPWomen's Health Nurse Practitioner1649866617
- Anne Riemer, PA-CPhysician Assistant1447447990
- Kayla RiendeauAssistant Behavior Analyst1275012932
- Nina RileyBehavior Analyst1679126148
- Matthew Riordan, DPMFoot & Ankle Surgery Podiatrist1710114269
- Dafnieselly Rios-QuilesBehavior Technician1568958213
- Robin Risso, LMFTMarriage & Family Therapist1619018934
- Elena RittmeyerNurse Practitioner1306606595
- Sophie RitzOrthotist1992425607
- Melissa RiveraBehavior Technician1689177677
- Eshal RizwanBehavior Analyst1598551194
- Clarissa RobertsBehavior Analyst1578358313
- Grace RobinsonBehavior Technician1437001245
- Katiana RoblesBehavior Technician1306335286
- Iraska RodriguezBehavior Analyst1245737451
- Tatiana RomanBehavior Technician1255224929
- Jaredsy Rosario, BCBABehavior Analyst1144146481
- Gary Rose, PH.D.Clinical Psychologist1205850013
- Michael Rosenbaum, M.D.Dermatology Physician1932193877
- Joanne Rosselli, COTAOccupational Therapy Assistant1083847149
- Max Rothbaum, LMSWMental Health Counselor1134855372
- Paige Rountree, M.EDMental Health Counselor1134019664
- Emily Rowe, M.S, BCBA, LABABehavior Analyst1073495032
- Heather Rozen, RPTPhysical Therapist1396861068
- Reyna RuizBehavior Analyst1083189773
- Ashley RussoBehavior Analyst1659982254
- Carrie Rys, NPAdult Health Nurse Practitioner1205123122
- Bianca SabatinoSocial Worker1558181214
- Rizwana Sabeeh, MDPsychiatry Physician1417479437
- David Salomon, M.D.Pediatrics Physician1770563025
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.