Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ostin M Warren, PSY.D.

Psychologist in Danville, IL · enumerated 2016.

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

National Provider Identifier

1972964427

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Registry record

Entity type Individual (Type 1)

Name Dr. Ostin M Warren

Credential PSY.D.

Sex Male

Practice address 1900 E Main St, Danville, IL, 61832

Phone (217) 554-4867

Enumeration date Mar 11, 2016

Last updated in NPPES Dec 28, 2023

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License B1-0001056 (DE) Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD credential

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 1972964427 active?

Yes, as of the latest NPPES snapshot, NPI 1972964427 is active (record last updated 2023-12-28).

How do I verify Ostin Warren's NPI record?

Cross-check NPI 1972964427 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 2023-12-28.