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 263 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. Maksim Zayaruzny, MDAnesthesiology Physician1265578447
  2. Xsabiel ZayasDevelopmental Therapist1134532328
  3. Kimberly Zayhowski, MSGenetic Counselor (M.S.)1104306901
  4. Masey ZegarowskiBehavior Technician1770169674
  5. Elda Zeko-Underwood, MAClinical Psychologist1548646359
  6. Garrett Zella, MDPediatric Gastroenterology Physician1164558805
  7. Sergio Zendejas, M.D.Anesthesiology Physician1043367188
  8. Daniel Zenevitch, PAPhysician Assistant1538605688
  9. Ryan ZenevitchStudent in an Organized Health Care Education/Training Program1225690530
  10. Harry ZenonNurse's Aide1508147141
  11. Emmalyn ZeppiMusic Therapist1588520068
  12. Shuni Zerykier, MAMental Health Counselor1902094139
  13. Karen Zgurzynski, M.D.Pediatrics Physician1336123066
  14. Paul Zgurzynski, MDEmergency Medicine Physician1083697130
  15. Jing ZhangDentist1780967612
  16. Liping Zhang, M.D.Anatomic Pathology & Clinical Pathology Physician1407017890
  17. Mina Zhang, MDStudent in an Organized Health Care Education/Training Program1730930843
  18. Ping ZhangDentist1003361502
  19. Tina ZhangInternal Medicine Physician1982231379
  20. Xiaowei Zhang, DMDDentist1316399173
  21. Dan ZhaoBehavior Technician1497438691
  22. Liang Zhao, D.M.D.Dentist1295965770
  23. Yong Zhao, MDBlood Banking & Transfusion Medicine Physician1366448813
  24. Anna Zheng, M.D.Family Medicine Physician1740609403
  25. Hanqiao Zheng, MD, PHDAnatomic Pathology Physician1043748395
  26. Larry Zheng, M.D.Diagnostic Radiology Physician1275578999
  27. Leon Zheng, MD, PHDBlood Banking & Transfusion Medicine Physician1669037537
  28. Rena Zheng, M.D., PH.D.Hematology & Oncology Physician1497140958
  29. Su Zheng, M.D.Clinical Pathology/Laboratory Medicine Physician1437103082
  30. Amy Zhou, M.D.Anatomic Pathology & Clinical Pathology Physician1740541051
  31. Tianhua Zhou, M.D.Cardiovascular Disease Physician1740715887
  32. Valerie ZhuStudent in an Organized Health Care Education/Training Program1720838394
  33. Viola Zhu, MD PHDHematology & Oncology Physician1588814404
  34. Xiaoqin Zhu, M.D.Anatomic Pathology Physician1043630312
  35. Miguel Zialcita, M.D.Neurology Physician1396782108
  36. Marie Seraphine ZibeganLicensed Practical Nurse1790561843
  37. Mark Zielonka, RPHAmbulatory Care Pharmacist1679178487
  38. Joshua Zierler-Broudo, MSWSocial Worker1508132911
  39. Joshua ZilinskasMental Health Counselor1790935088
  40. Andrew Zimmerman, M.D.Pediatric Neurodevelopmental Disabilities Physician1184682577
  41. Kurtis Zimmerman, ODOptometrist1053434217
  42. Erika Zimmons, DOFamily Medicine Physician1942373535
  43. Daniel Zinkus, PA-CPhysician Assistant1003275892
  44. Joshua ZioloMental Health Counselor1942168661
  45. Demi Zipperian, OTR/LOccupational Therapist1518492107
  46. Miranda Zitek, RN, BSNRegistered Nurse1144887910
  47. Iva Zivna, M.D.Infectious Disease Physician1083670368
  48. Jaroslav Zivny, M.D.Gastroenterology Physician1144203076
  49. Leah Ziwich, DPTPhysical Therapist1538579156
  50. Matthew Zogby, MDEmergency Medicine Physician1346204963

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.