Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. William S Wallace, FNP

Family Nurse Practitioner in Memphis, TN · enumerated 2005 · practices at Alliance Healthcare Services.

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

National Provider Identifier

1457334633

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Registry record

Entity type Individual (Type 1)

Name Mr. William S Wallace

Credential FNP

Sex Male

Practice address 1200 Peabody Ave, Memphis, TN, 38104

Phone (901) 272-0003

Fax (901) 272-7179

Enumeration date Nov 22, 2005

Last updated in NPPES Mar 5, 2010

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 108204 (TN) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN108204 (TN) Primary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP credential

Other identifiers

Identifier	Type	State	Issuer
3388963	Medicaid	TN	-
4070262	Other	TN	BLUE CROSS
000000028284	Other	TN	TENNCARE TLC

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 Wallace practice?

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

What is the NPI number for William Wallace?

The National Provider Identifier (NPI) for William Wallace is 1457334633, 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 2010-03-05.