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Nurse Practitioner

Mallory Andrzejak

Sees patients in Buffalo, NY · New York

Summary

Mallory Andrzejak (Nurse Practitioner) is enrolled with Medicare at 1 practice location in Buffalo, NY. NPI 1790347672. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Mallory Andrzejak, 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

Nurse PractitionerPrimary specialty
YesAccepts Medicare assignment
7Years since medical school (graduated 2019)
State University Of New York At Buffalo School Of MedicineMedical school
FemaleGender (as listed)
Roswell Park Cancer InstituteGroup practice

Quick answers

Where does Mallory Andrzejak see patients?
Medicare's clinician data lists 1 practice location in Buffalo, NY. Call before your visit to confirm the address.
What is Mallory Andrzejak's specialty?
Medicare lists Nurse Practitioner as the primary specialty.
Does Mallory Andrzejak accept Medicare assignment?
Yes. Medicare's clinician data says Mallory Andrzejak 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 Mallory Andrzejak?
(716) 845-2300, as listed in official Medicare / NPI Registry data.
What is Mallory Andrzejak's NPI number?
1790347672. 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 Mallory Andrzejak is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Mallory Andrzejak as a member of this group (CMS data updated 2026-10-02).

  • Roswell Park Cancer Institute488 clinicians in the group

Specialties

Find other clinicians: Nurse Practitioner, New York →

Other nurse practitioners in Buffalo

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

All nurse practitioners in Buffalo →

Clinician information

Medical schoolState University Of New York At Buffalo School Of Medicine
Graduation year2019
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1790347672
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