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Mount Sinai School of Medicine

Transplant Surgery Physician in New York, NY · enumerated 2007 · authorized official John Leonard, Associate Director Finance.

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

National Provider Identifier

1528285871

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Registry record

Entity type Organization (Type 2)
Legal business name Mount Sinai School of Medicine
Other name <Unavail>
Practice address 5 East 98th. Street 12th. Floor, New York, NY, 10029
Phone (212) 659-8072
Fax (212) 659-8066
Enumeration date Apr 19, 2007
Last updated in NPPES Aug 23, 2007

Taxonomy & classification

204F00000X Transplant Surgery Physician Allopathic & Osteopathic Physicians Primary
207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name John Leonard
Title Associate Director Finance
Phone (212) 659-8029

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

What type of organization is Mount Sinai School of Medicine?
Mount Sinai School of Medicine is registered in NPPES as a Transplant Surgery Physician (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-08-23.