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Dermatology

Marcelle A. Grassi, MD

Sees patients in Williamsville, NY · Cheektowaga, NY · Orchard Park, NY … · New York

Summary

Marcelle A. Grassi, MD (Dermatology) is enrolled with Medicare at 4 practice locations in Williamsville, NY, Cheektowaga, NY and Orchard Park, NY and other places. NPI 1881690915. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(716) 651‑0726 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Marcelle A. Grassi, 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

4Practice locations
DermatologyPrimary specialty
YesAccepts Medicare assignment
48Years since medical school (graduated 1978)
FemaleGender (as listed)
Roswell Park Cancer InstituteGroup practice (+1 more)

Quick answers

Where does Marcelle A. Grassi see patients?
Medicare's clinician data lists 4 practice locations, including Williamsville, NY, Cheektowaga, NY and Orchard Park, NY. Call before your visit to confirm the address.
What is Marcelle A. Grassi's specialty?
Medicare lists Dermatology as the primary specialty.
Does Marcelle A. Grassi accept Medicare assignment?
Yes. Medicare's clinician data says Marcelle A. Grassi 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 Marcelle A. Grassi?
(716) 651-0726, as listed in official Medicare / NPI Registry data.
What is Marcelle A. Grassi's NPI number?
1881690915. 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 Marcelle A. Grassi is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Marcelle A. Grassi as a member of these groups (CMS data updated 2026-10-02).

  • Roswell Park Cancer Institute488 clinicians in the group
  • Rpci Oncology, PC65 clinicians in the group

Specialties

Find other Dermatology doctors in New York →

Other dermatologists in Williamsville

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

All dermatologists in Williamsville →

Clinician information

CredentialMD
Graduation year1978
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1881690915
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