NPPES file of Aug 9, 2026

Doctors and health care providers in Leominster, MA

1,151 individual NPPES records list a practice address in Leominster, 43rd of 406 Massachusetts cities. The largest group is mental health counselor: 139, 12% of the city's records, against 8% across Massachusetts. Page 16 of 24.

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

Leominster in Massachusetts

  • Rank in Massachusetts43rd of 406 cities by records
  • Share of the state0.5% of Massachusetts's records
  • Specialties present25 or more taxonomy codes
  • Top three groups24.1% of all records

Compared with Massachusetts as a whole, Leominster has 4.3× the state's share of massage therapist records and 0.20× its share of student in an organized health care education/training program records.

Providers in Leominster, alphabetically

  1. Jeana Naticchioni, LPNLicensed Practical Nurse1154703056
  2. Bethany Nelson, RD, LDNRegistered Dietitian1831692524
  3. Emily Nelson, NPFamily Nurse Practitioner1700637105
  4. David Nesanelis, M.D.Internal Medicine Physician1518287416
  5. My Phan Neuman, LCSWSocial Worker1447684352
  6. Carol NguyenPharmacist1801496278
  7. Nhung Nguyen, DMDDentist1275835977
  8. Amy NickersonBehavior Analyst1215345053
  9. Hannah Niemiec, RNRegistered Nurse1841973534
  10. Nicole Nigro, LMTMassage Therapist1942018155
  11. Jennifer NoelRegistered Nurse1386443133
  12. Gary Noroian, MDNephrology Physician1447232046
  13. Cailee Norton, M.A.Counselor1841993490
  14. Kelly Noska, ANP-BCAdult Health Nurse Practitioner1710211446
  15. Gerald Nowosacki, LICSWClinical Social Worker1922589902
  16. Yvonne Noyesstevens, M.ED.Mental Health Counselor1871802827
  17. Ashley Nutting-Poirier, RNRegistered Nurse1225695539
  18. Julius NwetbefuaHome Health Registered Nurse1952128779
  19. Kwasi NyantePharmacist1679178651
  20. Daniel O'Connell, DPTPhysical Therapist1730722703
  21. Ann O'Connor, RN, CNPFamily Nurse Practitioner1447862925
  22. Kaitlyn O'ConnorSpecialist1760961106
  23. Mark O'Connor, M.D.Cardiovascular Disease Physician1215297270
  24. Kelly O'Dea, M.S.Developmental Therapist1932572096
  25. Daniel O'Leary, M.D.Internal Medicine Physician1447346531
  26. Daniel O'LearyPhysician Assistant1255778551
  27. John O'Loughlin, M.D.Allergy Physician1477648582
  28. Kaleigh O'Neil, FNP-BCFamily Nurse Practitioner1831765296
  29. Kerry O'Neil, BSEDDevelopmental Therapist1912180951
  30. Victoria O'Rourke, MPH, RD, LDNRegistered Dietitian1326683566
  31. Karen ObergCommunity Health Worker1730777848
  32. William Obrien, DMDGeneral Practice Dentistry1710991278
  33. Adesuwa Ogiegor, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1538990882
  34. Rachael OgunsekanDevelopmental Therapist1518744994
  35. Elena Oksanish, M ED CCC/SLPSpeech-Language Pathologist1528355419
  36. Angel Okumu, N/ACounselor1568297919
  37. Stephanie Oliva, M.D.Family Medicine Physician1750624482
  38. Marsha Olson, N.P.Nurse Practitioner1184685851
  39. Lisa Oneto, LICSWClinical Social Worker1417035726
  40. Cecilia OpokuBehavior Technician1548002454
  41. Frank OpokuMental Health Counselor1366212623
  42. Edmond Oppong, MSWSocial Worker1972211027
  43. Allison Osborn, MAMental Health Counselor1376107722
  44. Kay Osborne, LMHCMental Health Counselor1982793915
  45. Efrain Otero Palacios, MDNephrology Physician1114379716
  46. April OwenDevelopmental Therapist1730851668
  47. Vanessa Owen, LMHCMental Health Counselor1922516418
  48. Peace Owino, MSMental Health Counselor1841116753
  49. Elizabeth PachecoBehavior Technician1326965245
  50. Mariann Padron Gleich, M.D.Gastroenterology Physician1578721049

The largest Massachusetts cities

  1. Boston41,865
  2. Worcester13,166
  3. Springfield8,553
  4. Cambridge5,145
  5. Brockton4,287

All of Massachusetts →

How to read this directory

Leominster, Massachusetts appears in the CMS National Plan and Provider Enumeration System with 1,151 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 Leominster - 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 Leominster 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 Leominster is weighted toward Mental Health Counselor (139 clinicians, followed by Clinical Social Worker with 81 and Developmental Therapist with 57). 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, Leominster reports roughly 16.4 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 Leominster 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 Leominster, MA?

There are 1,151 registered healthcare providers in Leominster, MA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Leominster?

The most common specialties in Leominster are Mental Health Counselor, Clinical Social Worker, Developmental Therapist, Family Nurse Practitioner, Physical Therapist. Mental Health Counselor has the most providers with 139.

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.