Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. William Todd Sadler, LMHC

Mental Health Counselor in Federal Way, WA · enumerated 2011 · practices at Thrive Counseling Center LLC.

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

National Provider Identifier

1558653873

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Registry record

Entity type Individual (Type 1)

Name Mr. William Todd Sadler

Credential LMHC

Sex Male

Practice address 33400 9th Ave S Ste 100, Federal Way, WA, 98003

Phone (206) 567-7267

Fax (206) 567-7242

Enumeration date May 4, 2011

Last updated in NPPES Mar 12, 2026

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License LH 60526515 (WA) Primary

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

Where does William Sadler practice?

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

What is the NPI number for William Sadler?

The National Provider Identifier (NPI) for William Sadler is 1558653873, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-12.