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

Mary Holton Williams, RN

Registered Nurse in Smithville, TN · enumerated 2023 · practices at State of Tennessee.

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

National Provider Identifier

1629750765

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Registry record

Entity type Individual (Type 1)

Name Mary Holton Williams

Credential RN

Sex Female

Practice address Smithville, TN, 37166

Phone (615) 597-7599

Enumeration date Aug 7, 2023

Last updated in NPPES Aug 7, 2023

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

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 0000248038 (TN) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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

Where does Mary Williams practice?

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

What is the NPI number for Mary Williams?

The National Provider Identifier (NPI) for Mary Williams is 1629750765, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-07.