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Physician Assistant

Michael D. Ryan, PA

Sees patients in Buffalo, NY · Williamsville, NY · New York

Summary

Michael D. Ryan, PA (Physician Assistant) is enrolled with Medicare at 7 practice locations in Buffalo, NY and Williamsville, NY. NPI 1417902479. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(716) 859‑5600 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Michael D. Ryan, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

7Practice locations
Physician AssistantPrimary specialty
YesAccepts Medicare assignment
23Years since medical school (graduated 2003)
MaleGender (as listed)
Roswell Park Cancer InstituteGroup practice (+1 more)

Quick answers

Where does Michael D. Ryan see patients?
Medicare's clinician data lists 7 practice locations, including Buffalo, NY and Williamsville, NY. Call before your visit to confirm the address.
What is Michael D. Ryan's specialty?
Medicare lists Physician Assistant as the primary specialty.
Does Michael D. Ryan accept Medicare assignment?
Yes. Medicare's clinician data says Michael D. Ryan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Michael D. Ryan?
(716) 859-5600, as listed in official Medicare / NPI Registry data.
What is Michael D. Ryan's NPI number?
1417902479. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Michael D. Ryan is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.

Group practices

Medicare enrollment lists Michael D. Ryan as a member of these groups (CMS data updated 2026-10-02).

  • Roswell Park Cancer Institute488 clinicians in the group
  • Kaleida Health236 clinicians in the group

Specialties

Find other clinicians: Physician Assistant, New York →

Other physician assistants in Buffalo

Clinicians with the same Medicare primary specialty in Buffalo, NY — not a recommendation.

All physician assistants in Buffalo →

Clinician information

CredentialPA
Graduation year2003
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1417902479
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians