Jenny Gia Mach-Hung, O.D.
Optometrist · Orange, CA
Jenny Gia Mach-Hung, O.D. is an optometrist with a practice address in Orange, California, and NPI 1326170994, issued on Mar 9, 2007. Check the license (California 11920T, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Jenny Gia Mach-Hung
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 11920T CA
Self-reported in NPPES; status is on the state search - Practice location
- 130 S Main St, Orange, CA 92868
- Phone
- (714) 939-9202
- Enumerated
- Mar 9, 2007
- Record last updated
- Oct 23, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (562) 799-1596
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Verify Jenny Gia Mach-Hung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 11920TCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average optometrist in 2024
85 Medicare Part D claims for 35 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D.
Most prescribed
- Latanoprost51 claims
- Neomycin-Polymyxin-Dexameth13 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.
Jenny Gia Mach-Hung among 8,308 optometrist records in California
Jenny Gia Mach-Hung, 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 updated2021 · 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 Orange → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Allen Austin, O. D.Orange, CA 928681386638476
- Howard Austin, O.D.Orange, CA 928681932193018
- Hector Carrillo, ODOrange, CA 928681609587831
- Norman ChungOrange, CA 928681154958791
- Amanda Dawe, O.D.Orange, CA 928681659302198
- Carolyn Duong, ODOrange, CA 928681073878096
- Pamela Falk, ODOrange, CA 928681811989262
- Jay Kwok, O.D.Orange, CA 928681275783607
Common questions
What is Jenny Gia Mach-Hung, O.D.'s NPI number?
Jenny Gia Mach-Hung, O.D.'s National Provider Identifier (NPI) is 1326170994, issued on Mar 9, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Jenny Gia Mach-Hung, O.D. located?
The NPPES record lists a practice address at 130 S Main St, Orange, CA, 92868. Phone: (714) 939-9202. Providers update this record themselves, so call before visiting.
How can I verify Jenny Gia Mach-Hung, O.D.'s license?
NPPES lists California license number 11920T, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Jenny Gia Mach-Hung, O.D. prescribe under Medicare Part D?
In 2024, Jenny Gia Mach-Hung, O.D. had 85 Medicare Part D claims for 35 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.