OrganizationActive
Mark H. Harder OD
NPI 1093955965 · Optometrist · Modesto, CA
Mark H. Harder OD is a Optometrist organization in Modesto, CA (NPI 1093955965).
Provider details
- NPI number
- 1093955965
- Entity type
- Organization
- Primary specialty
- OptometristEye and Vision Services Providers
- Organization subpart
- No
- Authorized official
- Mark Harder, Optometrist(209) 596-4360
- License
- CA07481T (CA)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
Detailed profile(86/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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.
Practice location
501 E Orangeburg Ave Ste B
Modesto, CA 95350-5578
Phone: (209) 596-4360
Fax: (209) 566-0685
Street-level locationGet directions
Mailing address
501 E Orangeburg Ave Ste B
Modesto, CA 95350-5578
Other names (DBA / former)
- Doing business as
- Mark Harder Optometry
- Doing business as
- Mark Harder Optometry
Registry dates
- Enumerated
- 2009-03-04
- Last updated
- 2018-10-24
Frequently asked questions
- What is Mark H. Harder OD's NPI number?
- Mark H. Harder OD's National Provider Identifier (NPI) is 1093955965, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mark H. Harder OD?
- Mark H. Harder OD is classified in the NPPES registry as Optometrist (Eye and Vision Services Providers).
- Where is Mark H. Harder OD located?
- Mark H. Harder OD's practice location on file with NPPES is 501 E Orangeburg Ave Ste B, Modesto, CA 95350-5578.
- What is Mark H. Harder OD's phone number?
- The practice phone number listed in the NPPES registry for Mark H. Harder OD is (209) 596-4360.
- Who is the authorized official for Mark H. Harder OD?
- The authorized official listed on Mark H. Harder OD's NPPES record is Mark Harder, Optometrist. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mark H. Harder OD's NPI active?
- Yes — Mark H. Harder OD's NPI (1093955965) is active in the NPPES registry as of the last update on 2018-10-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.