John E. Tomaszewski, MD
Anatomic Pathology Physician · Buffalo, NY
John E. Tomaszewski, MD is an anatomic pathology physician with a practice address in Buffalo, New York, and NPI 1417993601, issued on Jun 22, 2006. Check the license on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- John E. Tomaszewski
- Credential
- MD
- Primary taxonomy
- Anatomic Pathology Physician 207ZP0101X
- License number
- MD020859 PA
Self-reported in NPPES; status is on the state search - Practice location
- 100 High St, Buffalo, NY 14203
- Phone
- (716) 859-5600
- Enumerated
- Jun 22, 2006
- Record last updated
- Oct 10, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- 0011063450002 PA
- Medicare enrollment
- Enrolled (PECOS I20120210000301); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 1977
- Entity
- Type 1 · individual
8 nearest anatomic pathology physician records → All 373 in New York → Look up another NPI →
Also registered at 100 High St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jamie Abbott, PHD, MSGenetic Counselor (M.S.)1093411522
- Amr Abd El-Radi, MDInternal Medicine Physician1124681614
- Mohamed Abdel-Aal Ahmed, M.D.Cardiovascular Disease Physician1164834776
- Jonah Abdo-Suarez, PHARMACISTPharmacist1164259826
- Samira Abdulkadir, PA-CPhysician Assistant1376344721
- Omar Abialmouna, MDRheumatology Physician1518527092
Verify John E. Tomaszewski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the ProfessionsCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 96 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- University AT Buffalo Pathologists IncBuffalo, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John E. Tomaszewski among 373 anatomic pathology physician records in New York
John E. Tomaszewski, MD is one of 373 anatomic pathology physician records with a practice address in New York. 59% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 51% newer
- In a Medicare fileYes · 59% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1977 · median 1992 among the 197 with a school on file
- Record last updated2011 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0101X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anatomic Pathology Physician providers in New York
There are 373 anatomic pathology physician records in New York.
All 373 in New York → Every provider in Buffalo → Anatomic Pathology Physician nationwide →
The 8 anatomic pathology physician records with the nearest ZIP codes
- Frank Chen, MD, PHDBuffalo, NY 142031649299496
- Jinrong ChengBuffalo, NY 142031558708412
- Tieying Hou, MDBuffalo, NY 142031558780833
- Abdur Khan, MDBuffalo, NY 142031821063561
- Barbara Stefanick, MDBuffalo, NY 142141730150384
- Philip Dvoretsky, MDBuffalo, NY 142201851467757
- Jayne Kremzier, MDWilliamsville, NY 142211902355415
- Rafal Kozielski, M.D.Buffalo, NY 142221730146713
Common questions
What is John E. Tomaszewski, MD's NPI number?
John E. Tomaszewski, MD's National Provider Identifier (NPI) is 1417993601, issued on Jun 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John E. Tomaszewski, MD located?
The NPPES record lists a practice address at 100 High St, Buffalo, NY, 14203. Phone: (716) 859-5600. Providers update this record themselves, so call before visiting.
How can I verify John E. Tomaszewski, MD's license?
Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is John E. Tomaszewski, MD's MIPS final score?
The 2023 MIPS final score is 96 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
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.