Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

University of Washington

General Acute Care Hospital in Seattle, WA · enumerated 2009 · authorized official William Butler, President.

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

National Provider Identifier

1235363821

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name University of Washington

Practice address 1959 Ne Pacific St, Box 356540, Seattle, WA, 98195

Phone (206) 221-6453

Enumeration date May 11, 2009

Last updated in NPPES Aug 16, 2011

Taxonomy & classification

282N00000X General Acute Care Hospital Hospitals Primary

Authorized official

Name William Butler

Title President

Phone (713) 798-4951

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2011-08-16. Verify at npiregistry.cms.hhs.gov.

Where is University of Washington located?

The practice location on file with NPPES is in Seattle, WA.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-08-16.