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 179 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. Jennifer OconnorPeer Specialist1922493378
  2. Mariel Oconnor, MDStudent in an Organized Health Care Education/Training Program1083417489
  3. Eric OddleifsonOther Specialist/Technologist1225296478
  4. Rafy Odeh, MDStudent in an Organized Health Care Education/Training Program1760233548
  5. Faustina Odoi, RNPsychiatric/Mental Health Registered Nurse1033984562
  6. Donna OduroBehavior Technician1770401184
  7. Evan Offord, MDStudent in an Organized Health Care Education/Training Program1043060221
  8. Catherine Offutt, CNMAdvanced Practice Midwife1124070032
  9. Emmanuel OforiBehavior Technician1821814138
  10. Geoffrey Ofori-DwomfuoSocial Worker1710753645
  11. Petrolina Ofori-MensahRegistered Nurse1245172659
  12. Mary Ogagan, NStudent in an Organized Health Care Education/Training Program1295485753
  13. Kristina Ogbarmey TettehBehavior Technician1215856323
  14. Alexander OgbeiwiDevelopmental Therapist1750888780
  15. Precious OgboeSocial Worker1427862283
  16. Melissa OglebayCounselor1275911901
  17. Olajumoke Ogundare, MSC, CD, CBSDoula1508737628
  18. Joy OgunmuyiwaStudent in an Organized Health Care Education/Training Program1740819432
  19. Latifatu OgunsemoreMental Health Counselor1902234008
  20. Opeyemi Ogunshola, MDStudent in an Organized Health Care Education/Training Program1669222428
  21. Jeong Teag Oh, D.D.SDentist1497370621
  22. Oded Ohana, MDOphthalmology Physician1730706532
  23. Brianna OhmanBehavior Technician1326665811
  24. Kennadi OhmanDevelopmental Therapist1437784899
  25. Katharina OhmenBehavior Technician1639758949
  26. Melissa Oikle, PA-CPhysician Assistant1174619472
  27. Catherine Ojatabu, RN. BSN.Home Health Registered Nurse1992514137
  28. Smriti OjhaPharmacist1376255273
  29. Chi Ok, M.D.Anatomic Pathology & Clinical Pathology Physician1437315892
  30. Isaac OkaiPsychiatric/Mental Health Nurse Practitioner1841162765
  31. Chelsea OkanteyBehavior Technician1972439487
  32. Sharif Okasha, PSY.D.Clinical Psychologist1518027325
  33. Emike Okhipo, MDStudent in an Organized Health Care Education/Training Program1932903374
  34. Elizabeth OkhrimenkoBehavior Technician1487404901
  35. Eromosele Okhuebor, PAPhysician Assistant1356729768
  36. Okike Okike, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1841274974
  37. Emmanuella OklaBehavior Technician1801591920
  38. Chidimma Okoli, M.D.Internal Medicine Physician1972823870
  39. Rosamystica OkumuMental Health Counselor1992526073
  40. Temitayo OlasehindeStudent in an Organized Health Care Education/Training Program1184418188
  41. Joseph Olatunji, DPMStudent in an Organized Health Care Education/Training Program1275324949
  42. Katiemae OldersteinCounselor1831570712
  43. Kaitlyn Oldewurtel, DOColon & Rectal Surgery Physician1043871163
  44. Barbara Olendzki, RD, MPH, LDNRegistered Dietitian1548338015
  45. Nicholas Olendzki, PSY.D.Student in an Organized Health Care Education/Training Program1225587645
  46. Ivone OliveiraBehavior Technician1902486186
  47. Maria Luiza OliveiraBehavior Technician1811795537
  48. Paulo Oliveira, M.D.Pulmonary Disease Physician1467412122
  49. Jan OliverPhysical Therapist1013051648
  50. Kimberly Oliver, NPNurse Practitioner1497088850

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.