Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Thomas Francis Determan

Optometrist in Yuma, AZ · enumerated 2006.

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

National Provider Identifier

1508966805

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas Francis Determan

Sex Male

Practice address 2750 S Pacific Ave, Suite D, Yuma, AZ, 85365

Phone (928) 782-7557

Fax (928) 783-8445

Enumeration date Sep 25, 2006

Last updated in NPPES Jan 12, 2022

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OD 786 (AZ) Primary

152WC0802X Corneal and Contact Management Optometrist Eye and Vision Services Providers · License OD 786 (AZ) Secondary

Other identifiers

Identifier	Type	State	Issuer
410030328	Other	AZ	RAILROAD
AZ0249670	Other	AZ	BCBS ARIZONA
131533001	Other	AZ	DMERC

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 1508966805 active?

Yes, as of the latest NPPES snapshot, NPI 1508966805 is active (record last updated 2022-01-12).

How do I verify Thomas Determan's NPI record?

Cross-check NPI 1508966805 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-12.