Paul Hung-Li Peng, O.D.
Optometrist · Castro Valley, CA
Paul Hung-Li Peng, O.D. is an optometrist with a practice address in Castro Valley, California, and NPI 1013049840, issued on Mar 9, 2007. Check the license (California 8665TGLC, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Paul Hung-Li Peng
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 8665TGLC CA
Self-reported in NPPES; status is on the state search - Practice location
- 4041 E Castro Valley Blvd, Castro Valley, CA 94552
- Phone
- (510) 881-8343
- Enumerated
- Mar 9, 2007
- Record last updated
- Feb 11, 2022
- Fax
- (510) 881-8501
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 4041 E Castro Valley Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Margaret Francisco, O.D.Optometrist1801337431
- Sheri Heath, O.D.Optometrist1871538512
- Chi Quang, O.D.Optometrist1386871705
- Richard Sequeira, O.D.Optometrist1194871525
Verify Paul Hung-Li Peng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 8665TGLCCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average optometrist in 2024
122 Medicare Part D claims for 50 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Latanoprost49 claims
- Cyclosporine18 claims
- Timolol Maleate17 claims
- Levobunolol Hcl13 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.
Paul Hung-Li Peng among 8,308 optometrist records in California
Paul Hung-Li Peng, 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 2007, is newer than 34% of them.
- NPI issued2007 · 34% of these records are older, 46% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 43% of these records are
- Record last updated2022 · 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).
24 optometrist records list a practice address in Castro Valley
They are 24 of the 999 NPPES records with a practice address in Castro Valley, and 8,308 optometrist records in California.
All 8,308 in California → Every provider in Castro Valley → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Catherine Academia, O.D.Castro Valley, CA 945521518418565
- Margaret Francisco, O.D.Castro Valley, CA 945521801337431
- Sheri Heath, O.D.Castro Valley, CA 945521871538512
- Sophia Hsiao, O.D.Castro Valley, CA 945521093097149
- Chi Quang, O.D.Castro Valley, CA 945521386871705
- Richard Sequeira, O.D.Castro Valley, CA 945521194871525
- Tiranjan Chattha, O.DLivermore, CA 945511841342177
- Cheyenne Chinea Gengler, O.D.Martinez, CA 945531679861272
Common questions
What is Paul Hung-Li Peng, O.D.'s NPI number?
Paul Hung-Li Peng, O.D.'s National Provider Identifier (NPI) is 1013049840, issued on Mar 9, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Paul Hung-Li Peng, O.D. located?
The NPPES record lists a practice address at 4041 E Castro Valley Blvd, Castro Valley, CA, 94552. Phone: (510) 881-8343. Providers update this record themselves, so call before visiting.
How can I verify Paul Hung-Li Peng, O.D.'s license?
NPPES lists California license number 8665TGLC, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Paul Hung-Li Peng, O.D. prescribe under Medicare Part D?
In 2024, Paul Hung-Li Peng, O.D. had 122 Medicare Part D claims for 50 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.