Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

St. Catherine of Siena Medical Center

Q: What is the NPI number for St. Catherine of Siena Medical Center?

The NPI for St. Catherine of Siena Medical Center is 1154764819, a Type 2 (organization) record in the CMS NPPES registry.

General Acute Care Hospital in Smithtown, NY · enumerated 2013 · authorized official Lori Hummel, Director.

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

National Provider Identifier

1154764819

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Registry record

Entity type Organization (Type 2)

Legal business name St. Catherine of Siena Medical Center

Practice address 50 Route 25a, Smithtown, NY, 11787

Phone (631) 862-3000

Enumeration date Apr 12, 2013

Last updated in NPPES Apr 12, 2013

Taxonomy & classification

282N00000X General Acute Care Hospital Hospitals Primary

Authorized official

Name Lori Hummel

Title Director

Phone (631) 465-6001

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 St. Catherine of Siena Medical Center?

NPPES lists Lori Hummel (Director) as the authorized official for this organization.

What is the NPI number for St. Catherine of Siena Medical Center?

The NPI for St. Catherine of Siena Medical Center is 1154764819, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-12.