Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Mark Henry Harder, OD

Individual provider Optometrist · NPI 1093787459

Dr. Mark Henry Harder, OD is an Optometrist in Modesto, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2006
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

501 E Orangeburg Ave Ste B
Modesto, CA 95350
Phone: (209) 596-4360
Fax: (209) 566-0685
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence CA07481T (CA)

Record details

NPI number1093787459
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorYes
NPI enumeratedFebruary 1, 2006
Last updated in NPPESMarch 7, 2023
Mailing address501 E Orangeburg Ave Ste B, Modesto, CA 95350-5578

Other providers in Modesto