What is Mark Helmus's NPI number?

Mark Helmus's National Provider Identifier (NPI) is 1558343905, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Helmus's specialty?

Mark Helmus is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).

Where is Mark Helmus located?

Mark Helmus's practice location on file with NPPES is 353 2nd St, Davis, CA 95616.

What is Mark Helmus's phone number?

The practice phone number listed in the NPPES registry for Mark Helmus is (530) 758-2122.

Does Mark Helmus accept Medicare?

Mark Helmus is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Mark Helmus's NPI active?

Yes — Mark Helmus's NPI (1558343905) is active in the NPPES registry as of the last update on 2011-10-28.

IndividualActiveAccepts Medicare

Mark Helmus, O.D.

NPI 1558343905 · Optometrist · Davis, CA

Mark Helmus, O.D. is a Optometrist provider in Davis, CA (NPI 1558343905).

Provider details

NPI number: 1558343905
Entity type: Individual
Primary specialty: OptometristEye and Vision Services Providers
Credential: O.D.
Sex: Male
Sole proprietor: Yes
License: OPT 00007215 TPA (CA)

Practice location

353 2nd St

Davis, CA 95616

Phone: (530) 758-2122

Fax: (530) 758-1448

Street-level locationGet directions

More CA providers

Mailing address

353 2nd St

Davis, CA 95616

Specialties & taxonomies

OptometristPrimary152W00000XLicense OPT7215TPA (CA)
Eye and Vision Services Providers
Optometrist152W00000XLicense OPT 00007215 TPA (CA)
Eye and Vision Services Providers

Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(91/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
20 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Enumerated: 2005-11-18
Last updated: 2011-10-28

Frequently asked questions

What is Mark Helmus's NPI number?: Mark Helmus's National Provider Identifier (NPI) is 1558343905, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Mark Helmus's specialty?: Mark Helmus is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
Where is Mark Helmus located?: Mark Helmus's practice location on file with NPPES is 353 2nd St, Davis, CA 95616.
What is Mark Helmus's phone number?: The practice phone number listed in the NPPES registry for Mark Helmus is (530) 758-2122.
Does Mark Helmus accept Medicare?: Mark Helmus is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Mark Helmus's NPI active?: Yes — Mark Helmus's NPI (1558343905) is active in the NPPES registry as of the last update on 2011-10-28.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions