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

Dr. Thomas Hayes Hilsenrath, O.D.

Optometrist in Denver, CO · enumerated 2007 · practices at Eyeglass World, LLC 66.

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

National Provider Identifier

1689712705

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Thomas Hayes Hilsenrath

Credential O.D.

Sex Male

Practice address Denver, CO, 80222

Phone (303) 758-2020

Enumeration date Feb 1, 2007

Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 2423 (CO) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
2423	Other	CO	OPTOMETRY LICENSE
114692-9934	Other	UT	OPTOMETRY 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

Where does Thomas Hilsenrath practice?

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

What is the NPI number for Thomas Hilsenrath?

The National Provider Identifier (NPI) for Thomas Hilsenrath is 1689712705, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Eyeglass World, LLC 66 Eyewear Supplier · Denver, CO NPI 1144376377

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.