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

Dr. William Marlin Hicks, OD

Optometrist in Winchester, TN · enumerated 2005.

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

National Provider Identifier

1558362681

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Registry record

Entity type Individual (Type 1)

Name Dr. William Marlin Hicks

Credential OD

Sex Male

Practice address Winchester, TN, 37398

Phone (931) 967-2230

Fax (931) 967-9622

Enumeration date Aug 10, 2005

Last updated in NPPES Sep 18, 2012

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

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OD 0000000494 (TN) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
3722905	Medicaid	TN	-

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 William Hicks practice?

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

What is the NPI number for William Hicks?

The National Provider Identifier (NPI) for William Hicks is 1558362681, 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 2012-09-18.