NPPES file of Aug 9, 2026

Doctors and health care providers in Worcester, MA

13,166 individual NPPES records list a practice address in Worcester, 2nd of 406 Massachusetts cities. The largest group is behavior technician: 1,487, 11% of the city's records, against 5% across Massachusetts. Page 64 of 264.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in Worcester

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Worcester in Massachusetts

  • Rank in Massachusetts2nd of 406 cities by records
  • Share of the state6% of Massachusetts's records
  • Specialties present25 or more taxonomy codes
  • Top three groups26.2% of all records
  • Behavior Technician rank2nd of the 10 Massachusetts cities with the most

Compared with Massachusetts as a whole, Worcester has 2.4× the state's share of nurse practitioner records and 0.52× its share of physical therapist records.

Providers in Worcester, alphabetically

  1. Eric Dickson, MDEmergency Medicine Physician1851385611
  2. Trisha Didio, MPTGeriatric Physical Therapist1831396878
  3. Nancy Difinizio, RN, BALSRegistered Nurse1013047174
  4. Steven Difrancesco, PHDClinical Psychologist1306420534
  5. Elizabeth Digangi, NPNurse Practitioner1053000208
  6. Patrick DigginsSocial Worker1528578200
  7. Angelina DigioiaBehavior Technician1699367730
  8. Lyndsey Digiorgio, FNPFamily Nurse Practitioner1851661029
  9. Christine Digregorio, NURSE PRACTITIONERAdult Health Nurse Practitioner1497892293
  10. Terre Digregorio, CRCMental Health Counselor1154778017
  11. Marisa Diiorio, MDStudent in an Organized Health Care Education/Training Program1639010168
  12. Sharyn Dilauro, RNPsychiatric/Mental Health Registered Nurse1972930550
  13. Melissa DileggeMental Health Counselor1528471109
  14. Julie DileoMental Health Counselor1891024089
  15. Rachel DilimaCounselor1851879498
  16. Naiyla DillardBehavior Technician1497380596
  17. George DillingClinical Social Worker1255067724
  18. Kimberly Dillon, PTPhysical Therapist1619861374
  19. Lee DillonDevelopmental Therapist1073925053
  20. Mary Dillon, RNCSPsychiatric/Mental Health Nurse Practitioner1265783336
  21. Noreen Dillon, COTA/LSpecialist1639365935
  22. Penelope Dillon, FNP-C ,PSYCH NP-C, CFamily Medicine Physician1558393330
  23. Lori Dilorenzo, M.D.Addiction Medicine (Family Medicine) Physician1023093945
  24. Matthew Dimaria, DOStudent in an Organized Health Care Education/Training Program1568192433
  25. Martha Dimilla, NPAcute Care Nurse Practitioner1831284199
  26. Dennis Dimitri, MDFamily Medicine Physician1902883499
  27. Olivia Dineen, DPTPhysical Therapist1851988315
  28. Alicia Ding, DOStudent in an Organized Health Care Education/Training Program1184475311
  29. Juan Ding, ODOptometrist1770006744
  30. Min-Sheng Ding, DOPsychiatry Physician1609445949
  31. David Dinh, NP-C, PMHNP-BCFamily Nurse Practitioner1104478288
  32. Kate Dinh, M.D.Surgical Oncology Physician1578858445
  33. Tai Dinh, PHARM.DPharmacist1639448954
  34. Joudy Ann Dinnall, DPMPodiatrist1033405741
  35. Debra Dinoi, M.S.W.Clinical Social Worker1093978587
  36. Raymond Dinoi, M.S.W.Clinical Social Worker1659430502
  37. Andrea Dinsmore, PSYDPsychologist1437643814
  38. Katanna Dion-BernierAddiction (Substance Use Disorder) Counselor1720852056
  39. Anne DionneStudent in an Organized Health Care Education/Training Program1346034378
  40. Brooke DionneBehavior Technician1306417803
  41. Eric Dionne, DDSEndodontics1205040656
  42. Samantha Dipalma, M.S., CCC-SLPSpeech-Language Pathologist1649526872
  43. Adriana Dipasquale, PSY.D.Clinical Psychologist1487143053
  44. Paula Diperri, M.S. RNPsychiatric/Mental Health Registered Nurse1255445532
  45. Briana DipilatoMental Health Counselor1881940765
  46. Gianna Dipinto, NPNurse Practitioner1245010636
  47. Sophia DiplacidoStudent in an Organized Health Care Education/Training Program1477364339
  48. Camille Dirago, MDStudent in an Organized Health Care Education/Training Program1447002282
  49. Maria Diran, M.A.Mental Health Counselor1750541397
  50. James Direda, LICSW, PH.D.Clinical Social Worker1699888479

The largest Massachusetts cities

  1. Boston41,865
  2. Springfield8,553
  3. Cambridge5,145
  4. Brockton4,287
  5. Milford3,459

All of Massachusetts →

How to read this directory

Worcester, Massachusetts appears in the CMS National Plan and Provider Enumeration System with 13,166 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 Worcester - 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 Worcester 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 Worcester is weighted toward Behavior Technician (1,487 clinicians, followed by Student in an Organized Health Care Education/Training Program with 1,031 and Mental Health Counselor with 929). 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, Worcester reports roughly 188 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.

For Worcester 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 Worcester, MA?

There are 13,166 registered healthcare providers in Worcester, MA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Worcester?

The most common specialties in Worcester are Behavior Technician, Student in an Organized Health Care Education/Training Program, Mental Health Counselor, Developmental Therapist, Clinical Social Worker. Behavior Technician has the most providers with 1,487.

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.