Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gretchen Willams, RPH

Pharmacist in Seattle, WA · enumerated 2012.

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

National Provider Identifier

1194077438

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Registry record

Entity type Individual (Type 1)

Name Gretchen Willams

Credential RPH

Sex Female

Practice address 4025 Delridge Way Sw, Suite 400, Seattle, WA, 98106

Phone (206) 763-2626

Fax (206) 763-2062

Enumeration date Oct 10, 2012

Last updated in NPPES Oct 10, 2012

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License PH 00013613 (WA) Primary

RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy. About the RPH credential

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

What is the NPI number for Gretchen Willams?

The National Provider Identifier (NPI) for Gretchen Willams is 1194077438, a Type 1 (individual) record in the CMS NPPES registry.

Where does Gretchen Willams practice?

The practice location on file with NPPES is in Seattle, WA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-10-10.