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

Winson Ong, OD

Individual provider Optometrist · NPI 1821132143

Winson Ong, OD is an Optometry in Brentwood, California. Graduated from University of California - School of Optometry in 2002, 24 years ago. Practices with Regents of the University of California at Berkeley, a 58-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
24
Trained at
University of California - School of Optometry
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

3840 Balfour Rd Ste A
Brentwood, CA 94513-1641
Phone: (925) 513-0323
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 11938T (CA)

Record details

NPI number1821132143
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorNo
NPI enumeratedFebruary 19, 2007
Last updated in NPPESJuly 28, 2014

Medicare enrollment

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

Medicare specialtyOPTOMETRY
Medical schoolUNIVERSITY OF CALIFORNIA - SCHOOL OF OPTOMETRY
Graduated 2002 (24 years in practice)
Group practice Regents Of The University Of California At Berkeley — 58 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Other providers in Brentwood