Stephen Gerard Chrzanowski, MD
Internal Medicine Physician · West Seneca, NY
Stephen Gerard Chrzanowski, MD is an internal medicine physician with a practice address in West Seneca, New York, and NPI 1013966647, issued on May 10, 2006. Check the license (New York 2100441, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Stephen Gerard Chrzanowski
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 2100441 NY
Self-reported in NPPES; status is on the state search - Practice location
- 290 Center RD, West Seneca, NY 14224
- Phone
- (716) 675-0707
- Enumerated
- May 10, 2006
- Record last updated
- Nov 23, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (716) 674-1836
- Medicare enrollment
- Enrolled (PECOS I20110701000221); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1995
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 290 Center RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Linda Blazier, NPAdult Health Nurse Practitioner1295946192
- Martin Casey, M.D.Family Medicine Physician1205890308
- Christina Dudziak, FNPFamily Nurse Practitioner1396035218
- Maralynn Johnson, MASSAGE THERAPISTMassage Therapist1356535447
- Mallory Kelly, RPA-CPhysician Assistant1730414111
- Shari Lefauve, RPA-CPhysician Assistant1508820101
Verify Stephen Gerard Chrzanowski 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 2100441Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
13 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
One hospital affiliation
- Mercy Hospital OF BuffaloBuffalo, NY · Acute Care Hospitals2 of 5 stars
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.
Stephen Gerard Chrzanowski among 12,067 internal medicine physician records in New York
Stephen Gerard Chrzanowski, MD is one of 12,067 internal medicine physician records with a practice address in New York. 79% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1995 · median 2002 among the 7,221 with a school on file
- Record last updated2010 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
21 internal medicine physician records list a practice address in West Seneca
They are 21 of the 1,175 NPPES records with a practice address in West Seneca, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in West Seneca → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Vyjanthanath Gunasingham, M.D.West Seneca, NY 142241912900432
- David Gunther, M.D.West Seneca, NY 142241962483156
- Lisa Hoffman, M.D.West Seneca, NY 142241679550412
- Soosaipillai Jeyapalan, MDWest Seneca, NY 142241992779284
- Mary Kelly, MDWest Seneca, NY 142241053361816
- Erzsebet Mazepa, MDWest Seneca, NY 142241801845516
- Edward Obrien, MDWest Seneca, NY 142241053379420
- Jyotsna Rajeswary, MDWest Seneca, NY 142241639141633
Common questions
What is Stephen Gerard Chrzanowski, MD's NPI number?
Stephen Gerard Chrzanowski, MD's National Provider Identifier (NPI) is 1013966647, issued on May 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Gerard Chrzanowski, MD located?
The NPPES record lists a practice address at 290 Center RD, West Seneca, NY, 14224. Phone: (716) 675-0707. Providers update this record themselves, so call before visiting.
How can I verify Stephen Gerard Chrzanowski, MD's license?
NPPES lists New York license number 2100441, 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.
How much does Stephen Gerard Chrzanowski, MD prescribe under Medicare Part D?
In 2024, Stephen Gerard Chrzanowski, MD had 13 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.