Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

John T. Mather Memorial Hospital

Q: What is the NPI number for John T. Mather Memorial Hospital?

The NPI for John T. Mather Memorial Hospital is 1568774453, a Type 2 (organization) record in the CMS NPPES registry.

Psychiatry Physician in Mount Sinai, NY · enumerated 2010 · authorized official Joseph Wisnoski, Cfo.

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

National Provider Identifier

1568774453

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Registry record

Entity type Organization (Type 2)

Legal business name John T. Mather Memorial Hospital

Practice address 5505 Nesconset Hwy, Mount Sinai, NY, 11766

Phone (631) 686-7689

Enumeration date Jul 8, 2010

Last updated in NPPES Dec 15, 2010

Taxonomy & classification

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Joseph Wisnoski

Title Cfo

Phone (631) 473-1320

Other identifiers

Identifier	Type	State	Issuer
03246297	Medicaid	NY	-

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

Who is the authorized official for John T. Mather Memorial Hospital?

NPPES lists Joseph Wisnoski (Cfo) as the authorized official for this organization.

What is the NPI number for John T. Mather Memorial Hospital?

The NPI for John T. Mather Memorial Hospital is 1568774453, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

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Celso Hofilena Pediatrics Physician · Mt Sinai, NY NPI 1801897491 Jeffrey Sverd Neurology Physician · Mount Sinai, NY NPI 1164462974 Jennifer Saul Family Nurse Practitioner · Mount Sinai, NY NPI 1265595185 Victoria Cook Psychiatric/Mental Health Nurse Practitioner · Mount Sinai, NY NPI 1255484788 Vincent Vomero General Practice Dentistry · Mount Sinai, NY NPI 1700095478 Mt. Sinai Family Dental Endodontics · Mount Sinai, NY NPI 1205047693 Anthony Quitoni General Practice Dentistry · Mount Sinai, NY NPI 1689864837 Emily Williams Pediatric Registered Nurse · Mount Sinai, NY NPI 1922867290

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-12-15.