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

Dr. Clifford Karl Chang, OD

Individual provider Optometrist · NPI 1558539007

Dr. Clifford Karl Chang, OD is an Optometrist in San Francisco, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2008
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

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Practice location Address checks out

929 Clay St 203
San Francisco, CA 94108-1556
Phone: (415) 982-1700
Fax: (415) 982-1750
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 4031 (CA)

Record details

NPI number1558539007
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorYes
NPI enumeratedFebruary 19, 2008
Last updated in NPPESApril 23, 2008

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