Kathy Ong, O.D.
Optometrist · San Rafael, CA
Kathy Ong, O.D. is an optometrist with a practice address in San Rafael, California, and NPI 1609038629, issued on Jun 30, 2008. Check the license (California 11936T, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Kathy Ong
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 11936T CA
Self-reported in NPPES; status is on the state search - Practice location
- 1127 4TH St, San Rafael, CA 94901
- Phone
- (415) 295-7811
- Enumerated
- Jun 30, 2008
- Record last updated
- Mar 4, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160831002532); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Verify Kathy Ong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 11936TCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Kathy Ong among 8,308 optometrist records in California
Kathy Ong, O.D. is one of 8,308 optometrist records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2008, is newer than 54% of them.
- NPI issued2008 · 54% of these records are older, 43% newer
- In a Medicare fileNo · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated2002 · median 2008 among the 3,573 with a school on file
- Record last updated2016 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Optometrist providers in California
There are 8,308 optometrist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 8,308 in California → Every provider in San Rafael → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Susan Cunningham, O.D.San Rafael, CA 949011912996711
- Charles Dahlman, O.D.San Rafael, CA 949011841342953
- Vince Delgadillo, O.D.San Rafael, CA 949011376600262
- Howard Ellenberger, OD, PHDSan Rafael, CA 949011689755605
- Nat Finkel, O.D.San Rafael, CA 949011689679961
- Ronald Garcia, O.D.San Rafael, CA 949011003968199
- Jeffrey Iwami, O.D.San Rafael, CA 949011831249515
- Joan Mah, O.D.San Rafael, CA 949011992854897
Common questions
What is Kathy Ong, O.D.'s NPI number?
Kathy Ong, O.D.'s National Provider Identifier (NPI) is 1609038629, issued on Jun 30, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Kathy Ong, O.D. located?
The NPPES record lists a practice address at 1127 4TH St, San Rafael, CA, 94901. Phone: (415) 295-7811. Providers update this record themselves, so call before visiting.
How can I verify Kathy Ong, O.D.'s license?
NPPES lists California license number 11936T, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.