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 111 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. Marianne Iacuzio, LICSWClinical Social Worker1336193325
  2. Nicole IaniroClinical Social Worker1386114593
  3. Deanne Iannacchione, M ED. LADCIAddiction (Substance Use Disorder) Counselor1639201189
  4. Michael Iannamorelli, D.O.Surgical Critical Care Physician1922454859
  5. Kyoko IbarakiDevelopmental Therapist1982267548
  6. Ameer Ibrahim, MDEmergency Medicine Physician1629210380
  7. Philomena IdiagbonyaMental Health Counselor1679819809
  8. Allison IdrovoBehavior Technician1891492369
  9. Francesca Iebba, OTROccupational Therapist1609430529
  10. Kamsiyonna IgbobiAssistant Behavior Analyst1811873839
  11. Edesiri Igbuya, MDStudent in an Organized Health Care Education/Training Program1891490025
  12. Margaret Igoe, MAPsychologist1508291543
  13. Melody Igwe, FNPFamily Nurse Practitioner1558805093
  14. Sarah IheduruDevelopmental Therapist1437630712
  15. Bright IhesienePsychiatric/Mental Health Nurse Practitioner1619845807
  16. Eric Iida, MDNephrology Physician1275556912
  17. Gayatridevi Ika, M.D.Internal Medicine Physician1124001102
  18. Erinda IkonomiPharmacist1457783557
  19. Sarah IlkMental Health Counselor1356740971
  20. Katarina Illanes, M.D.Nephrology Physician1912049677
  21. Allison Illsley, NPNurse Practitioner1972974277
  22. Farid IlupejuDevelopmental Therapist1518522762
  23. Sonya Imperio, MT-BCMusic Therapist1093571440
  24. Kunikazu InashimaStudent in an Organized Health Care Education/Training Program1245156405
  25. Ozlenen Ince Hocaoglu, MDPhysical Medicine & Rehabilitation Physician1164160552
  26. Elizabeth IndingaroBehavior Analyst1194694398
  27. Lyeikosheni IndongoBehavior Technician1538026638
  28. Cindy Ing-FongPhysical Therapist1770627366
  29. James IngallsDevelopmental Therapist1558843904
  30. Isha Ingle, MDGlaucoma Specialist (Ophthalmology) Physician1104579564
  31. Bethany Ingram, PHARM DPharmacist1497525000
  32. Jamie Ingram, PTAPhysical Therapy Assistant1972857522
  33. Gabriella InmanBehavior Technician1003406430
  34. Mary Innis, RN PCAdult Psychiatric/Mental Health Clinical Nurse Specialist1053366963
  35. Keri Innis-Grant, MSW PENDINGProfessional Counselor1154800290
  36. Peter InotiChild & Adolescent Psychiatric/Mental Health Registered Nurse1346998069
  37. Melissa IodicePharmacist1356937940
  38. Carolina Ionete, MDNeurology Physician1386650190
  39. Lisa Iorio, NPFamily Nurse Practitioner1053771964
  40. Michelle IorioNurse Practitioner1255816682
  41. Gregory IovanelStudent in an Organized Health Care Education/Training Program1659074904
  42. Joseph Ipacs, MDPsychiatry Physician1669827788
  43. Fizzah Iqbal, MDStudent in an Organized Health Care Education/Training Program1609087683
  44. Julie Ireland, RNAddiction (Substance Use Disorder) Registered Nurse1427560481
  45. Luu Ireland, MDObstetrics & Gynecology Physician1851521587
  46. Rose IribagizaBehavior Technician1992453831
  47. Bethany Irish, RNRegistered Nurse1003535535
  48. Joy IrishBehavior Technician1396410957
  49. Hillary Irons, MDEmergency Medicine Physician1003041971
  50. Susan Ironstone, MDAnesthesiology Physician1184854838

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.