NPPES file of Aug 9, 2026

Doctors and health care providers in Williamsville, NY

3,530 individual NPPES records list a practice address in Williamsville, 16th of 1,009 New York cities. The largest group is licensed practical nurse: 605, 17% of the city's records, against 4% across New York. Page 47 of 71.

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

The 8 largest groups in Williamsville

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

Williamsville in New York

  • Rank in New York16th of 1,009 cities by records
  • Share of the state0.7% of New York's records
  • Specialties present25 or more taxonomy codes
  • Top three groups28% of all records
  • Licensed Practical Nurse rank5th of the 10 New York cities with the most

Compared with New York as a whole, Williamsville has 4.1× the state's share of licensed practical nurse records and 0.24× its share of student in an organized health care education/training program records.

Providers in Williamsville, alphabetically

  1. Briana Niland, DOFamily Medicine Physician1033554621
  2. Charles Niles, M.D.Ophthalmology Physician1053378109
  3. Philip Niles, MDRetina Specialist (Ophthalmology) Physician1609136126
  4. Patricia Nisbet, RN PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1598790255
  5. Philip Niswander, M.D.Ophthalmology Physician1306844550
  6. Annaliese Noack, DOInternal Medicine Physician1750510418
  7. Nicole Nobel, LCSW - RClinical Social Worker1235153859
  8. Amy Nolan, PTMSPhysical Therapist1326094780
  9. Allyn Norman, D.O.Internal Medicine Physician1568420925
  10. Anastasia Norman, LPNLicensed Practical Nurse1073861423
  11. Christina Norris, RPA-CMedical Physician Assistant1699265256
  12. Daniel Norton, LCSWRClinical Social Worker1417984667
  13. Janet Norton, RNHome Health Registered Nurse1396803193
  14. Anthony Notino, MDDiagnostic Radiology Physician1427014448
  15. Amanda NotteOccupational Therapy Assistant1598150872
  16. Kevin Nowicki, D.D.S.Dentist1679735377
  17. Melissa Nowicki, P.A.Medical Physician Assistant1235453234
  18. Brianna Nuttle, PAPhysician Assistant1992206221
  19. Lisa Nuwer, PT,CHTPhysical Therapist1760759328
  20. Juliette Nwachukwuu, MDEndocrinology, Diabetes & Metabolism Physician1609838002
  21. Patricia Nwokolo, LPNLicensed Practical Nurse1063744134
  22. Annette O'Connell, L.P.NLicensed Practical Nurse1528122322
  23. Kathleen O'Connor-Mullen, NPNurse Practitioner1659321974
  24. Katherine O'Donnell, M.D.Surgery Physician1912996133
  25. Sheila O'Donnell, LPNLicensed Practical Nurse1740799204
  26. Ashley O'Hara, LPNLicensed Practical Nurse1942504915
  27. Heather O'Hara, PNPPediatric Nurse Practitioner1265194062
  28. Darlene O'Keeffe, OTR/LOccupational Therapist1801045075
  29. Amy O'Mara, LPNLicensed Practical Nurse1861723421
  30. James O'May, RPA-CSurgical Physician Assistant1902836604
  31. Eric O'Neal, MDStudent in an Organized Health Care Education/Training Program1548953540
  32. Jamal O'Neill, LMTMassage Therapist1417180407
  33. Tara O'Sullivan-Jordan, RNRegistered Nurse1477986180
  34. Shea ObearSpecialist1629711403
  35. Leanna Obeng-Asante, RNRegistered Nurse1558076356
  36. Kaitlin Oberg, LCSWClinical Social Worker1730558693
  37. Allyson Odachowski, RDN, CDNRegistered Dietitian1235221557
  38. Amanda Ode, FNP-BCNurse Practitioner1154820231
  39. Jean Odell, RNRegistered Nurse1427338375
  40. Fiyinfolu OdemuyiwaHematology & Oncology Physician1104347558
  41. Larry OdomLicensed Practical Nurse1205258225
  42. Patricia Odonnell, DOFamily Medicine Physician1316012560
  43. Chidimma Oduwegwu, M.D.Internal Medicine Physician1992154942
  44. Merrie Oei, M.D.Diagnostic Radiology Physician1801247713
  45. Bethany Oesterle, PHARMDPharmacist1871939256
  46. Justin Ogilvie, LPNLicensed Practical Nurse1205275773
  47. Reynelda OkaforLicensed Practical Nurse1760047476
  48. Michelle Olandese, LCSWRClinical Social Worker1912334285
  49. Barbara Olewnick, LPNLicensed Practical Nurse1003977141
  50. Samantha OlewnikPhysician Assistant1568293363

The largest New York cities

  1. New York98,468
  2. Brooklyn64,057
  3. Bronx32,017
  4. Rochester20,520
  5. Buffalo13,287

All of New York →

How to read this directory

Williamsville, New York appears in the CMS National Plan and Provider Enumeration System with 3,530 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 Williamsville - 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 Williamsville 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 Williamsville is weighted toward Licensed Practical Nurse (605 clinicians, followed by Registered Nurse with 207 and Physician Assistant with 178). 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 New York's population, Williamsville reports roughly 18 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.

Of New York's most common specialties, Social Worker is the most prominent one with no provider currently listing a Williamsville practice address, a coverage gap Williamsville patients typically fill by traveling to a larger nearby hub.

For Williamsville 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 Williamsville, NY?

There are 3,530 registered healthcare providers in Williamsville, NY, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Williamsville?

The most common specialties in Williamsville are Licensed Practical Nurse, Registered Nurse, Physician Assistant, Pharmacist, Physical Therapist. Licensed Practical Nurse has the most providers with 605.

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.