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

Mrs. Dianna Gayle Harvey

Peer Specialist in Oklahoma City, OK · enumerated 2018.

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

National Provider Identifier

1336618651

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Registry record

Entity type Individual (Type 1)

Name Mrs. Dianna Gayle Harvey

Sex Female

Practice address Oklahoma City, OK, 73127

Phone (405) 896-8426

Enumeration date Nov 15, 2018

Last updated in NPPES Nov 15, 2018

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

Taxonomy & licenses

175T00000X Peer Specialist Other Service Providers Primary

Other identifiers

Identifier	Type	State	Issuer
1477914166	Other	KY	LANDMARK RECOVERY

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 Dianna Harvey practice?

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

What is the NPI number for Dianna Harvey?

The National Provider Identifier (NPI) for Dianna Harvey is 1336618651, 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 2018-11-15.