Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mrs. Sierra Lynn Williams, EDS, ATC/L

Athletic Trainer in Douglas, AZ · enumerated 2020.

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

National Provider Identifier

1669094033

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Registry record

Entity type Individual (Type 1)

Name Mrs. Sierra Lynn Williams

Credential EDS, ATC/L

Sex Female

Practice address Douglas, AZ, 85607

Phone (520) 417-4124

Enumeration date May 8, 2020

Last updated in NPPES May 8, 2020

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2255A2300X Athletic Trainer Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 1688 (AZ) 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 Sierra Williams practice?

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

What is the NPI number for Sierra Williams?

The National Provider Identifier (NPI) for Sierra Williams is 1669094033, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Lamar Innes Athletic Trainer · Douglas, AZ NPI 1457752115

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-05-08.