Quick answers
- Where does Corey Stack see patients?
- Medicare's clinician data lists 7 practice locations, including Grand Island, NY, Amherst, NY and Cheektowaga, NY. Call before your visit to confirm the address.
- What is Corey Stack's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Corey Stack accept Medicare assignment?
- Yes. Medicare's clinician data says Corey Stack 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 Corey Stack?
- (716) 403-3731, as listed in official Medicare / NPI Registry data.
- What is Corey Stack's NPI number?
- 1487447538. 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 Corey Stack is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 2340 Grand Island BlvdGrand Island, NY 14072 (716) 403‑3731
- 3190 Niagara Falls BvldAmherst, NY 14228 (716) 799‑8190
- 3450 Union RdCheektowaga, NY 14225 (716) 395‑2043
- 3980 Sheridan DrAmherst, NY 14226 (716) 929‑2800
- 5495 Sheridan DrBuffalo, NY 14221 (716) 932‑1198
Group practices
Medicare enrollment lists Corey Stack as a member of this group (CMS data updated 2026-10-02).
- Wellnow Urgent Care, P.C.392 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Grand Island
Clinicians with the same Medicare primary specialty in Grand Island, NY — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2025 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1487447538 |
| Corrections | Report 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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians