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

Dr. Frank Chao, OD

Individual provider Optometrist · NPI 1639228448

Dr. Frank Chao, OD is an Optometrist in Petaluma, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
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

3900 Lakeville Hwy
Petaluma, CA 94954-5698
Phone: (707) 765-3501
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 4489 (CA)

Record details

NPI number1639228448
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorNo
NPI enumeratedJanuary 10, 2007
Last updated in NPPESJuly 8, 2007
Mailing addressPo Box 666, El Verano, CA 95433-0666

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