Guy Kazuo Kato, O.D.
Optometrist · Whittier, CA
Guy Kazuo Kato, O.D. is an optometrist with a practice address in Whittier, California, and NPI 1598849820, issued on Oct 24, 2006. Check the license (California 8257T, 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
- Guy Kazuo Kato
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 8257T CA
Self-reported in NPPES; status is on the state search - Practice location
- 6309 Greenleaf Ave, Whittier, CA 90601
- Phone
- (562) 698-3279
- Enumerated
- Oct 24, 2006
- Record last updated
- Oct 28, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (562) 698-8180
- Medicaid ID
- SD0082570 CA
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 6309 Greenleaf Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Catherine Cizmar, ODOptometrist1962978452
- Joy Nakabayashi, O.D.Optometrist1255420394
Verify Guy Kazuo Kato in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 8257TCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Guy Kazuo Kato among 8,308 optometrist records in California
Guy Kazuo Kato, 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 66% newer
- In a Medicare fileNo · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 43% of these records are
- Record last updated2008 · 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).
33 optometrist records list a practice address in Whittier
They are 33 of the 2,836 NPPES records with a practice address in Whittier, and 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 Whittier → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Aaron Adame, O.D.Whittier, CA 906011982782322
- Catherine Cizmar, ODWhittier, CA 906011962978452
- Mark Galvan, O.D.Whittier, CA 906011043426927
- Candice Galvan, O.D.Whittier, CA 906011063675247
- Joy Nakabayashi, O.D.Whittier, CA 906011255420394
- Xavier Ordonez, O.D.Whittier, CA 906011750488193
- Lillian ChoiWhittier, CA 906021639849102
- Suzanne Fabrizio, O.D.Whittier, CA 906021881736478
Common questions
What is Guy Kazuo Kato, O.D.'s NPI number?
Guy Kazuo Kato, O.D.'s National Provider Identifier (NPI) is 1598849820, issued on Oct 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Guy Kazuo Kato, O.D. located?
The NPPES record lists a practice address at 6309 Greenleaf Ave, Whittier, CA, 90601. Phone: (562) 698-3279. Providers update this record themselves, so call before visiting.
How can I verify Guy Kazuo Kato, O.D.'s license?
NPPES lists California license number 8257T, 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.