Agnieszka K. Witkiewicz, M.D.
Anatomic Pathology Physician · Buffalo, NY
Agnieszka K. Witkiewicz, M.D. is an anatomic pathology physician with a practice address in Buffalo, New York, and NPI 1538177159, issued on Aug 3, 2006. Check the license (New York 293251, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Agnieszka K. Witkiewicz
- Credential
- M.D.
- Primary taxonomy
- Anatomic Pathology Physician 207ZP0101X
- License numbers
- 293251 NY
MD427490 PA
Self-reported in NPPES; status is on the state search - Practice location
- Elm And Carlton Streets Rpci Clinical Practice Plan, Buffalo, NY 14263
- Phone
- (716) 845-2300
- Enumerated
- Aug 3, 2006
- Record last updated
- Feb 12, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid IDs
- 0088854 NJ
101512383 PA - Medicare enrollment
- Enrolled (PECOS I20180702001435); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest anatomic pathology physician records → All 373 in New York → Look up another NPI →
Also registered at Elm And Carlton Streets Rpci Clinical Practice Plan
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alyson BrownNurse Practitioner1780122564
- Shipra Gandhi, M.B.B.S.Medical Oncology Physician1801154711
- Miranda SokanNurse Practitioner1285018051
Verify Agnieszka K. Witkiewicz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 293251Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Roswell Park Cancer InstituteBuffalo, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Agnieszka K. Witkiewicz among 373 anatomic pathology physician records in New York
Agnieszka K. Witkiewicz, M.D. 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
- Graduated1996 · median 1992 among the 197 with a school on file
- Record last updated2021 · 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
- Maurice Barcos, MDBuffalo, NY 142631528063237
- Bora Baysal, MD PHDBuffalo, NY 142631154509008
- Devi Jeyachandran, MDBuffalo, NY 142631184043960
- Thaer Khoury, MDBuffalo, NY 142631316043839
- Carl Morrison, MDBuffalo, NY 142631932142379
- Jan Nowak, MD PHDBuffalo, NY 142631417949967
- Tricia Numan, M.D.Buffalo, NY 142631205002524
- Saraswati Pokharel, MDBuffalo, NY 142631073734943
Common questions
What is Agnieszka K. Witkiewicz, M.D.'s NPI number?
Agnieszka K. Witkiewicz, M.D.'s National Provider Identifier (NPI) is 1538177159, issued on Aug 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Agnieszka K. Witkiewicz, M.D. located?
The NPPES record lists a practice address at Elm And Carlton Streets Rpci Clinical Practice Plan, Buffalo, NY, 14263. Phone: (716) 845-2300. Providers update this record themselves, so call before visiting.
How can I verify Agnieszka K. Witkiewicz, M.D.'s license?
NPPES lists New York license number 293251, as entered by the provider. 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.
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.