Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. EUGENE FRANK DEMAYO O.D.
NPI 1083607345
Optometrist in Boulder, CO

Q: What is Eugene Demayo's NPI number?

The NPI number for Eugene Demayo is 1083607345. It was assigned to this individual provider in the NPPES registry on August 23, 2005.

Q: What is Eugene Demayo's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Q: When was this NPI record last updated?

The NPPES record for Eugene Demayo was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 34 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since August 23, 2005

3121 28TH ST, BOULDER, CO 80301(303) 938-1500(303) 938-9458 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

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About Dr. Eugene Frank Demayo O.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. EUGENE FRANK DEMAYO O.D. (NPI 1083607345) is an individual optometrist in Boulder, Colorado, licensed in Colorado (1160) and active in the NPI registry since August 2005.

NPPES Registry Identity

NPI1083607345

Entity TypeIndividualMale

Primary Taxonomy152W00000X

Provider Legal NameDR. EUGENE FRANK DEMAYOCredential: O.D.

Location Address3121 28TH STBoulder, CO 80301-1315

Mailing Address3121 28th StBoulder, CO 80301-1315 · (303) 938-1500 · Fax (303) 938-9458

Phone(303) 938-1500

Fax(303) 938-9458

Sole ProprietorNo

Enumeration DateAugust 23, 2005

Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration

✔ NPI 1083607345 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOptometristEye and Vision Services Providers

Taxonomy Code152W00000X

License✔ Licensed in CO · 1160

Definition

Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.

Also ListedOptometrist · Corneal and Contact ManagementTaxonomy 152WC0802X · License 1160 (CO)

3121 28TH ST, Boulder, CO 80301

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Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

TOM'S SPORTIQUE EYEWEAR

Durable Medical Equipment & Medical Supplies

3121 28TH ST
BOULDER, CO 80301

Boulder County (303) 442-2010

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Eugene Demayo's NPI number?

The NPI number for Eugene Demayo is 1083607345. It was assigned to this individual provider in the NPPES registry on August 23, 2005.

Where is Eugene Demayo located?

Eugene Demayo practices at 3121 28th St, Boulder, CO 80301. The listed phone number is (303) 938-1500.

What is Eugene Demayo's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

When was this NPI record last updated?

The NPPES record for Eugene Demayo was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 34 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.