Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mercy Hospital of Buffalo

Q: What is the NPI number for Mercy Hospital of Buffalo?

The NPI for Mercy Hospital of Buffalo is 1164464921, a Type 2 (organization) record in the CMS NPPES registry.

General Acute Care Hospital in Buffalo, NY · enumerated 2006 · authorized official David Macholz, Chief Financial Officer.

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

National Provider Identifier

1164464921

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Registry record

Entity type Organization (Type 2)

Legal business name Mercy Hospital of Buffalo

Practice address 565 Abbott Rd, Buffalo, NY, 14220

Phone (716) 826-7000

Enumeration date Jun 13, 2006

Last updated in NPPES Sep 8, 2025

Taxonomy & classification

261QR0404X Cardiac Rehabilitation Clinic/Center Ambulatory Health Care Facilities Secondary

282N00000X General Acute Care Hospital Hospitals · License 1401008H (NY) Primary

Authorized official

Name David Macholz

Title Chief Financial Officer

Phone (716) 862-2430

Other identifiers

Identifier	Type	State	Issuer
14	Other	NY	INDEPENDENT HEALTH
00354412	Medicaid	NY	-
00011412901	Other	NY	UNIVERA HEALTHCARE
040401000064	Other	NY	FIDELIS
070	Other	NY	HEALTHNOW
73	Other	NY	INDEPENDENT HEALTH

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Who is the authorized official for Mercy Hospital of Buffalo?

NPPES lists David Macholz (Chief Financial Officer) as the authorized official for this organization.

What is the NPI number for Mercy Hospital of Buffalo?

The NPI for Mercy Hospital of Buffalo is 1164464921, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

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Jeffrey Steinig Hospitalist Physician · Buffalo, NY NPI 1376547026 Mary Welch Physical Medicine & Rehabilitation Physician · Buffalo, NY NPI 1891796512 Michael Dibella Emergency Medicine Physician · Buffalo, NY NPI 1760471072 Anthony Bonner Cardiovascular Disease Physician · Buffalo, NY NPI 1083697072 Michele Nenoff Physician Assistant · Buffalo, NY NPI 1831175074 Linda Lillis Midwife · Buffalo, NY NPI 1528046521 James Fitzgerald Diagnostic Radiology Physician · Buffalo, NY NPI 1386615987 Joseph Rusnak Vascular & Interventional Radiology Physician · Buffalo, NY NPI 1326010216

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-08.