Mark J. Welch, MD
Diagnostic Radiology Physician · Williamsville, NY
Mark J. Welch, MD is a diagnostic radiology physician with a practice address in Williamsville, New York, and NPI 1336175215, issued on Jun 23, 2006. Check the license (New York 221305-1, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Mark J. Welch
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License numbers
- 221305-1 NY
D0082346 MD
MD18504 ME
MD057975L PA
Self-reported in NPPES; status is on the state search - Practice location
- 111 N Maplemere RD Ste 120, Williamsville, NY 14221
- Phone
- (716) 836-4646
- Enumerated
- Jun 23, 2006
- Record last updated
- Aug 21, 2023
- Fax
- (716) 836-4696
- Medicaid ID
- 01869176 NY
- Medicare enrollment
- Enrolled (PECOS I20071019000460); accepts Medicare assignment
- Medical or professional school
- Hahnemann University College Of Medicine, 1992
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 3,146 in New York → Look up another NPI →
Also registered at 111 N Maplemere RD Ste 120
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Salah Abdelhadi, M.D.Diagnostic Radiology Physician1326453259
- Phillip Baum, MDDiagnostic Radiology Physician1023016060
- Thomas Bevilacqua, M.D.Diagnostic Radiology Physician1093094005
- Akash Bhatnagar, MDDiagnostic Radiology Physician1437602265
- Jacob Chenez, DODiagnostic Radiology Physician1013479039
- Harris Chengazi, M.D.Vascular & Interventional Radiology Physician1861878837
Verify Mark J. Welch 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 221305-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5 hospitals and group practices
- Kaleida HealthBuffalo, NY · Acute Care Hospitals3 of 5 stars
- Bradford Radiology PCBradford, PA
- Great Lakes Medical Imaging LLCCheektowaga, NY
- Olean Medical Practice PLLCOlean, NY
- Western New York Radiology Associates LLCBuffalo, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Mark J. Welch among 3,146 diagnostic radiology physician records in New York
Mark J. Welch, MD is one of 3,146 diagnostic radiology physician records with a practice address in New York. 75% 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 15% of them.
- NPI issued2006 · 15% of these records are older, 45% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1992 · median 2002 among the 2,169 with a school on file
- Record last updated2023 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
77 diagnostic radiology physician records list a practice address in Williamsville
They are 77 of the 3,530 NPPES records with a practice address in Williamsville, and 3,146 diagnostic radiology physician records in New York.
All 3,146 in New York → Every provider in Williamsville → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Phillip Baum, MDWilliamsville, NY 142211023016060
- Steven ChristensenWilliamsville, NY 142211811971971
- Anne Ehrlich, MDWilliamsville, NY 142211134103294
- Hari Gopal, M.D.Williamsville, NY 142211336138502
- Carol Jackson-Gibson, MDWilliamsville, NY 142211164421442
- Daniel Jacobson, M.D.Williamsville, NY 142211710956859
- Peter Loud, MDWilliamsville, NY 142211811987944
- Jan Najdzionek, MDWilliamsville, NY 142211497739833
Common questions
What is Mark J. Welch, MD's NPI number?
Mark J. Welch, MD's National Provider Identifier (NPI) is 1336175215, issued on Jun 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark J. Welch, MD located?
The NPPES record lists a practice address at 111 N Maplemere RD Ste 120, Williamsville, NY, 14221. Phone: (716) 836-4646. Providers update this record themselves, so call before visiting.
How can I verify Mark J. Welch, MD's license?
NPPES lists New York license number 221305-1, 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.