Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Aurora Sinai Medical Center

Q: What is the NPI number for Aurora Sinai Medical Center?

The NPI for Aurora Sinai Medical Center is 1700223849, a Type 2 (organization) record in the CMS NPPES registry.

General Acute Care Hospital in Oconomowoc, WI · enumerated 2013 · authorized official Sarah Ardellini, Emergency Medicine PA Resident.

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

National Provider Identifier

1700223849

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Registry record

Entity type Organization (Type 2)

Legal business name Aurora Sinai Medical Center

Practice address W353n6046 Bayshore Cir, Oconomowoc, WI, 53066

Phone (239) 349-0621

Enumeration date May 30, 2013

Last updated in NPPES May 30, 2013

Taxonomy & classification

282N00000X General Acute Care Hospital Hospitals Primary

Authorized official

Name Sarah Ardellini

Title Emergency Medicine PA Resident

Phone (239) 349-0621

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 Aurora Sinai Medical Center?

NPPES lists Sarah Ardellini (Emergency Medicine PA Resident) as the authorized official for this organization.

What is the NPI number for Aurora Sinai Medical Center?

The NPI for Aurora Sinai Medical Center is 1700223849, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-30.