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

John Y Wong, OD

Individual provider Optometrist · NPI 1457371619

John Y Wong, OD is an Optometry in Castro Valley, California. Graduated from Southern California College of Optometry in 2005, 21 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in California.

Years since qualifying
21
Trained at
Southern California College of Optometry
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.

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Practice location Address checks out

20211 Patio Dr Ste 100
Castro Valley, CA 94546-4338
Phone: (510) 881-4401
Fax: (510) 881-4423
Show map & directions

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

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence OPT12872T (CA)

Record details

NPI number1457371619
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorYes
NPI enumeratedJuly 20, 2006
Last updated in NPPESAugust 6, 2014

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOPTOMETRY
Medical schoolSOUTHERN CALIFORNIA COLLEGE OF OPTOMETRY
Graduated 2005 (21 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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