Doctors and health care providers in Winchester, MA
439 individual NPPES records list a practice address in Winchester, 96th of 406 Massachusetts cities. The largest group is clinical social worker: 34, 8% of the city's records, against 8% across Massachusetts. Page 7 of 9.
The 8 largest groups in Winchester
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Winchester in Massachusetts
- Rank in Massachusetts96th of 406 cities by records
- Share of the state0.2% of Massachusetts's records
- Specialties present25 or more taxonomy codes
- Top three groups16.4% of all records
Compared with Massachusetts as a whole, Winchester has 14× the state's share of pediatric dentistry records and 0.43× its share of mental health counselor records.
Providers in Winchester, alphabetically
- Elizabeth O'ConnorSocial Worker1275411282
- Joan O'Connor, D.M.D.Orthodontics and Dentofacial Orthopedics Dentistry1700940046
- Kyle O'Connor, RPHPharmacist1366034126
- Meghan O'ConnorPhysical Therapist1336964667
- Joseph O'Donnell, D.M.D.Pediatric Dentistry1023102050
- Flora Ocampo, DDSOral and Maxillofacial Surgery (Dentist)1467592204
- Joanne Oh, M.D.Pain Medicine (Anesthesiology) Physician1679511950
- Matthew OliverCertified Registered Nurse Anesthetist1609434521
- Van Orenstein, D.M.D.Pediatric Dentistry1134432206
- Marissa Osorio, WHNPWomen's Health Nurse Practitioner1770273591
- Sarah Packard, LICSWClinical Social Worker1962736751
- Peter Pantano, D.D.S.Dentist1134199268
- Erik ParenaCertified Registered Nurse Anesthetist1487920328
- Annie Parker, MDPulmonary Disease Physician1144204066
- Dilip Patel, MDAnesthesiology Physician1689631186
- Sean Pearlman, RBTBehavior Analyst1144813841
- Gabriella PedutoRegistered Nurse1093670366
- Joshua Penn, MDEmergency Medicine Physician1811169394
- Rory Petteys, MDNeurological Surgery Physician1558596627
- Marie Natacha PilorgeBehavior Technician1992410120
- Noel Poirier, MACAcupuncturist1134673890
- Wellner Poppe, M.D.Family Medicine Physician1548238157
- Sarah Powers, RDRegistered Dietitian1649826058
- Christopher Quartararo, M.D.Anesthesiology Physician1558476515
- Paul Radvany, M.D.Cardiovascular Disease Physician1609832492
- Revathi Ramaswamy, MDAnesthesiology Physician1376654863
- Yolanda RamseurClinical Social Worker1578824272
- Frederic Ramsey, MDAnesthesiology Physician1962576140
- Madeline Randolph, PA-CPhysician Assistant1578117032
- Kathryn ReboulClinical Social Worker1962268235
- William Reed, DMDEndodontics1265691539
- Viviana Reyes Pinzon, MDPulmonary Disease Physician1033736004
- Le Grand Reynolds, MD, MBAEmergency Medicine Physician1558564096
- Alayna Richardson, N.P.Family Nurse Practitioner1700111820
- Sybil RichardsonClinical Social Worker1215293485
- Traci Ring, MS CCC AAudiologist1013984632
- Alison Robbins, PA-CPhysician Assistant1265741722
- Hilda Rock, M.D.Family Medicine Physician1477971976
- Steven Rosen, M.D.Neurology Physician1245379734
- Constance RosenbergerRegistered Nurse1184742165
- Phyllis Ross, L.I.C.S.WMental Health Counselor1497849079
- Joel Rubinstein, M.D.Psychiatry Physician1508952300
- Thomas Russo, D.M.D.Dentist1285836452
- Edward Ryan, MDOphthalmology Physician1083613186
- Marie Saba, MSW, LICSWClinical Social Worker1073119541
- Emily Samaha, MDFamily Medicine Physician1811300353
- Morgan Santhamoorthy, M.D.Family Medicine Physician1952750242
- Laura Saporito, RDRegistered Dietitian1780898619
- Polly Sawyer, LICSWClinical Social Worker1467211151
- Scott Schluter, MDPediatrics Physician1235112863
The largest Massachusetts cities
- Boston41,865
- Worcester13,166
- Springfield8,553
- Cambridge5,145
- Brockton4,287
How to read this directory
Winchester, Massachusetts appears in the CMS National Plan and Provider Enumeration System with 439 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 Winchester - 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 Winchester 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 Winchester is weighted toward Clinical Social Worker (34 clinicians, followed by Physical Therapist with 19 and Internal Medicine Physician with 19). 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, Winchester reports roughly 6.3 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, Behavior Technician is the most prominent one with no provider currently listing a Winchester practice address, a coverage gap Winchester patients typically fill by traveling to a larger nearby hub.
For Winchester 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 Winchester, MA?
There are 439 registered healthcare providers in Winchester, MA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Winchester?
The most common specialties in Winchester are Clinical Social Worker, Physical Therapist, Internal Medicine Physician, Anesthesiology Physician, Mental Health Counselor. Clinical Social Worker has the most providers with 34.
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.