Internal Medicine in Williamsville, NY
234 active Internal Medicine providers practice in Williamsville, New York according to the latest NPPES snapshot. Profiles include the NPI number, taxonomy code, license state, and practice address.
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| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1447479464 | A.W. Jones MD PC | Organization | Internal Medicine Physician | Williamsville, NY |
| 1093781056 | Abha Rani | Individual | Gastroenterology Physician | Williamsville, NY |
| 1255394763 | Academic Medicine Services, Inc. | Organization | Internal Medicine Physician | Williamsville, NY |
| 1992813828 | Adam Kotowski | Individual | Hematology & Oncology Physician | Williamsville, NY |
| 1346315074 | Adult Medical Services, P.C. | Organization | Internal Medicine Physician | Williamsville, NY |
| 1689638462 | Alexander Gelfer | Individual | Pulmonary Disease Physician | Williamsville, NY |
| 1518949379 | Alfredo Kua | Individual | Geriatric Medicine (Internal Medicine) Physician | Williamsville, NY |
| 1023232071 | Allyn M. Norman | Organization | Internal Medicine Physician | Williamsville, NY |
| 1568420925 | Allyn Norman | Individual | Internal Medicine Physician | Williamsville, NY |
| 1801836507 | Alok Gupta | Individual | Gastroenterology Physician | Williamsville, NY |
| 1316903321 | Amy Early | Individual | Medical Oncology Physician | Williamsville, NY |
| 1598748683 | Andras Vari | Individual | Pulmonary Disease Physician | Williamsville, NY |
| 1881658672 | Anthony Freundel | Individual | Pulmonary Disease Physician | Williamsville, NY |
| 1821073388 | Antonino Mannone | Individual | Gastroenterology Physician | Williamsville, NY |
| 1891982450 | Benjamin Schaus | Individual | Gastroenterology Physician | Williamsville, NY |
| 1881692267 | Bonnie Mcmichael | Individual | Internal Medicine Physician | Williamsville, NY |
| 1255478376 | Brian Karaszewski | Individual | Internal Medicine Physician | Williamsville, NY |
| 1407834872 | Buffalo Cardiology & Pulmonary Assoc PC | Organization | Cardiovascular Disease Physician | Williamsville, NY |
| 1023002516 | Buffalo Hospitalist Services, P.C. | Organization | Internal Medicine Physician | Williamsville, NY |
| 1285759498 | Burnett Healthcare | Organization | Internal Medicine Physician | Williamsville, NY |
| 1194771477 | Cardiology Group of Western New York PC | Organization | Cardiovascular Disease Physician | Williamsville, NY |
| 1689658312 | Celestino Pietrantoni | Individual | Pulmonary Disease Physician | Williamsville, NY |
| 1649264029 | Century Medical Associates PC | Organization | Hematology & Oncology Physician | Williamsville, NY |
| 1013974245 | Chee Kim | Individual | Cardiovascular Disease Physician | Williamsville, NY |
| 1730132366 | Cheng Fu | Individual | Internal Medicine Physician | Williamsville, NY |
| 1144276833 | Chi-Teh Yu | Individual | Internal Medicine Physician | Williamsville, NY |
| 1558339093 | Christine Weckerle | Individual | Internal Medicine Physician | Williamsville, NY |
| 1548246788 | Christopher Bartolone | Individual | Gastroenterology Physician | Williamsville, NY |
| 1619904612 | David Conti | Individual | Cardiovascular Disease Physician | Williamsville, NY |
| 1235196189 | David Dougherty | Individual | Medical Oncology Physician | Williamsville, NY |
| 1942286844 | David Fay | Individual | Gastroenterology Physician | Williamsville, NY |
| 1457337388 | David Garson | Individual | Gastroenterology Physician | Williamsville, NY |
| 1558340505 | David Plache | Individual | Endocrinology, Diabetes & Metabolism Physician | Williamsville, NY |
| 1215977046 | Djavad Arani | Individual | Cardiovascular Disease Physician | Williamsville, NY |
| 1457441685 | Djavad T Arani MD PC | Organization | Cardiovascular Disease Physician | Williamsville, NY |
| 1326098112 | Donald Switzer | Individual | Cardiovascular Disease Physician | Williamsville, NY |
| 1285615047 | Edward Spangenthal | Individual | Cardiovascular Disease Physician | Williamsville, NY |
| 1053373456 | Eric Koch | Individual | Internal Medicine Physician | Williamsville, NY |
| 1235101908 | Eric Thierman | Individual | Internal Medicine Physician | Williamsville, NY |
| 1942288048 | Eric Waffner | Individual | Internal Medicine Physician | Williamsville, NY |
| 1518097112 | Foong Ming Lam | Individual | Internal Medicine Physician | Williamsville, NY |
| 1215975289 | Forest Medical Group, Pllc | Organization | Internal Medicine Physician | Williamsville, NY |
| 1700879368 | Frank Voelker | Individual | Internal Medicine Physician | Williamsville, NY |
| 1811966872 | Frederick Beerel M.D.P.C. | Organization | Pulmonary Disease Physician | Williamsville, NY |
| 1366436198 | Frederick Hong | Individual | Hematology & Oncology Physician | Williamsville, NY |
| 1801865340 | Friedrich Albrecht | Individual | Cardiovascular Disease Physician | Williamsville, NY |
| 1740259647 | Gastroenterology Associates, LLP | Organization | Gastroenterology Physician | Williamsville, NY |
| 1679559934 | George Burnett | Individual | Internal Medicine Physician | Williamsville, NY |
| 1013946169 | George Kotlewski | Individual | Internal Medicine Physician | Williamsville, NY |
| 1184607848 | George Matthews | Individual | Cardiovascular Disease Physician | Williamsville, NY |
Frequently asked questions
How many Internal Medicine providers are in Williamsville, NY?
The latest NPPES snapshot lists 234 active Internal Medicine providers with a practice address in Williamsville, New York.
How do I check a Internal Medicine provider's NPI in Williamsville?
Open a profile below to see the NPI number, taxonomy code, and practice address, then verify against the official NPPES registry — every profile links directly to the CMS record.
Source: CMS NPPES (public data). Snapshot 2026-07-09.