Madison Sierra Nieves
Physician Assistant · Buffalo, NY
Madison Sierra Nieves is a physician assistant with a practice address in Buffalo, New York, and NPI 1467275065, issued on Nov 4, 2024. Check the license (New York 034570, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Madison Sierra Nieves
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 034570 NY
Self-reported in NPPES; status is on the state search - Practice location
- 38 Plymouth Ave, Buffalo, NY 14201
- Phone
- (571) 524-0198
- Enumerated
- Nov 4, 2024
- Record last updated
- Dec 2, 2025
- Medicare enrollment
- Enrolled (PECOS I20251231002435); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 15,555 in New York → Look up another NPI →
Verify Madison Sierra Nieves in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license 034570Check 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
- Buffalo Emergency Associates LLPBuffalo, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Madison Sierra Nieves among 15,555 physician assistant records in New York
Madison Sierra Nieves is one of 15,555 physician assistant records with a practice address in New York. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 83% of them.
- NPI issued2024 · 83% of these records are older, 11% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated2025 · median 2018 among the 8,158 with a school on file
- Record last updated2025 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
488 physician assistant records list a practice address in Buffalo
They are 488 of the 13,287 NPPES records with a practice address in Buffalo, and 15,555 physician assistant records in New York.
All 15,555 in New York → Every provider in Buffalo → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Raynaldo Betances, PABuffalo, NY 142011447886700
- Christopher Bieniek, PA-CBuffalo, NY 142011407006901
- Brendan FarnandBuffalo, NY 142011245739333
- Casey Feeney, PABuffalo, NY 142011861994683
- Stephen Gabor, PA-CBuffalo, NY 142011801618830
- Jenny Mai, PA-CBuffalo, NY 142011538846753
- Josh Matecki, PA-CBuffalo, NY 142011063873339
- Kellsey Medsger, PABuffalo, NY 142011861234833
Common questions
What is Madison Sierra Nieves's NPI number?
Madison Sierra Nieves's National Provider Identifier (NPI) is 1467275065, issued on Nov 4, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Madison Sierra Nieves located?
The NPPES record lists a practice address at 38 Plymouth Ave, Buffalo, NY, 14201. Phone: (571) 524-0198. Providers update this record themselves, so call before visiting.
How can I verify Madison Sierra Nieves's license?
NPPES lists New York license number 034570, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity 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.