Alvin Chung Ning Tan, O.D.
Optometrist · Los Angeles, CA
Alvin Chung Ning Tan, O.D. is an optometrist with a practice address in Los Angeles, California, and NPI 1457734014, issued on Jul 1, 2015. Check the license (California 15340, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Alvin Chung Ning Tan
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 15340 CA
Self-reported in NPPES; status is on the state search - Practice location
- 311 Winston St, Los Angeles, CA 90013
- Phone
- (213) 893-1960
- Enumerated
- Jul 1, 2015
- Record last updated
- Jan 20, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 311 Winston St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Alvin Chung Ning Tan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 15340Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average optometrist in 2024
33 Medicare Part D claims for 12 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D.
Most prescribed
- Latanoprost24 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Alvin Chung Ning Tan among 8,308 optometrist records in California
Alvin Chung Ning Tan, 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. Its NPI, issued in 2015, is newer than 71% of them.
- NPI issued2015 · 71% of these records are older, 27% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 43% of these records are
- Record last updated2020 · 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.
All 8,308 in California → Every provider in Los Angeles → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Michael Baker, O.D.Los Angeles, CA 900131679820245
- Andrew Balfour, O.D.Los Angeles, CA 900131902819568
- Tammy Chong, ODLos Angeles, CA 900131700612975
- Jade Davis, O.D.Los Angeles, CA 900131457303398
- Keiko Kitamura, O.D.Los Angeles, CA 900131104924356
- James Kurata, O.D.Los Angeles, CA 900131629048798
- Steven Kurata, ODLos Angeles, CA 900131528116167
- Eric Miyamoto, O.DLos Angeles, CA 900131902957418
Common questions
What is Alvin Chung Ning Tan, O.D.'s NPI number?
Alvin Chung Ning Tan, O.D.'s National Provider Identifier (NPI) is 1457734014, issued on Jul 1, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Alvin Chung Ning Tan, O.D. located?
The NPPES record lists a practice address at 311 Winston St, Los Angeles, CA, 90013. Phone: (213) 893-1960. Providers update this record themselves, so call before visiting.
How can I verify Alvin Chung Ning Tan, O.D.'s license?
NPPES lists California license number 15340, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Alvin Chung Ning Tan, O.D. prescribe under Medicare Part D?
In 2024, Alvin Chung Ning Tan, O.D. had 33 Medicare Part D claims for 12 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions 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. Medicare files from data.cms.gov. 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.