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Aaron K Mruk, FNP

Family Nurse Practitioner in Buffalo, NY · enumerated 2021.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1215508213

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Registry record

Entity type Individual (Type 1)
Name Aaron K Mruk
Credential FNP
Sex Male
Practice address 564 Niagara St Bldg 2, Buffalo, NY, 14201
Phone (716) 882-0366
Enumeration date Jul 9, 2021
Last updated in NPPES Jul 9, 2021

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 347814 (NY) Primary
FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where does Aaron Mruk practice?
The practice location on file with NPPES is in Buffalo, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Aaron Mruk?
The National Provider Identifier (NPI) for Aaron Mruk is 1215508213, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-09.