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

Mark M Cohen, MD

Individual provider Ophthalmology Physician · NPI 1194845271

Mark M Cohen, MD is an Ophthalmology Physician in Castro Valley, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

20046 Lake Chabot Rd
Castro Valley, CA 94546-5304
Phone: (510) 881-8823
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence C027491 (CA)

Record details

NPI number1194845271
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 30, 2007
Last updated in NPPESJuly 8, 2007
Mailing address21 Kippy Ct, Moraga, CA 94556-2714

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