Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Diagnostic Laboratory of Oklahoma LLC

Q: What is the NPI number for Diagnostic Laboratory of Oklahoma LLC?

The NPI for Diagnostic Laboratory of Oklahoma LLC is 1356443741, a Type 2 (organization) record in the CMS NPPES registry.

Clinical Medical Laboratory in Oklahoma City, OK · enumerated 2006 · authorized official R'Nee Mullen, Ceo.

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

National Provider Identifier

1356443741

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Diagnostic Laboratory of Oklahoma LLC

Parent organization Quest Diagnostics Incorporated

Practice address 225 Ne 97th St Suite 1000, Cytology Department, Oklahoma City, OK, 73114

Phone (405) 609-2000

Enumeration date Sep 5, 2006

Last updated in NPPES Oct 1, 2025

Taxonomy & classification

291U00000X Clinical Medical Laboratory Laboratories · License 37D0987653 (OK) Primary

Authorized official

Name R'Nee Mullen

Title Ceo

Phone (405) 608-6290

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

Who is the authorized official for Diagnostic Laboratory of Oklahoma LLC?

NPPES lists R'Nee Mullen (Ceo) as the authorized official for this organization.

What is the NPI number for Diagnostic Laboratory of Oklahoma LLC?

The NPI for Diagnostic Laboratory of Oklahoma LLC is 1356443741, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-01.