Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dianna Gay Toliver, RN,CSA,CST

Critical Care Medicine Registered Nurse in Sherman, TX · enumerated 2011.

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

National Provider Identifier

1437442241

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Registry record

Entity type Individual (Type 1)

Name Dianna Gay Toliver

Credential RN,CSA,CST

Sex Female

Practice address 600 E Taylor St Ste 100, Sherman, TX, 75090

Phone (903) 868-4595

Fax (903) 868-4597

Enumeration date May 26, 2011

Last updated in NPPES Apr 3, 2018

Taxonomy & licenses

163WC0200X Critical Care Medicine Registered Nurse Nursing Service Providers · License 603943 (TX) Primary

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

Other identifiers

Identifier	Type	State	Issuer
603943	Other	TX	REGISTERED NURSE LICENSE

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

Is NPI 1437442241 active?

Yes, as of the latest NPPES snapshot, NPI 1437442241 is active (record last updated 2018-04-03).

How do I verify Dianna Toliver's NPI record?

Cross-check NPI 1437442241 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-04-03.