Justin Duong-Mac, OD
Optometrist · San Francisco, CA
Justin Duong-Mac, OD is an optometrist with a practice address in San Francisco, California, and NPI 1568089738, issued on Jul 2, 2020. Check the license (California 34538, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Justin Duong-Mac
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 34538 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4150 Clement St, San Francisco, CA 94121
- Phone
- (415) 221-4810
- Enumerated
- Jul 2, 2020
- Record last updated
- Jul 3, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210608001752); accepts Medicare assignment
- Medical or professional school
- University Of California - School Of Optometry, 2020
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 4150 Clement St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Anna Abramson, M.D.Internal Medicine Physician1346424785
- Alison Acerra, MS, RDRegistered Dietitian1992726848
- Sharon AdelsonCounselor1932467271
- Gary Agcaoili, C.T.R.SRecreation Therapist1649284019
Verify Justin Duong-Mac in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 34538Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average optometrist in 2024
39 Medicare Part D claims for 29 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 31% of 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.
Industry payments in 2024: $105.67
2 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Permanente Medical Group IncUnion City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Justin Duong-Mac among 8,308 optometrist records in California
Justin Duong-Mac, OD 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 2020, is newer than 84% of them.
- NPI issued2020 · 84% of these records are older, 14% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated2020 · median 2008 among the 3,573 with a school on file
- 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 San Francisco → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Marta Banh, O.D.San Francisco, CA 941211568717213
- Geri Cheng, O.D.San Francisco, CA 941211003959750
- Thomas Chong, O.D.San Francisco, CA 941211558351908
- Bernard Dolan, O.D.San Francisco, CA 941211912017179
- Jimmy Fong, O.D.San Francisco, CA 941211982625042
- Heather Jones, O.D.San Francisco, CA 941211437461175
- Isabel Kazemi, ODSan Francisco, CA 941211972572980
- Bonnie Lau, O.D.San Francisco, CA 941211255563755
Common questions
What is Justin Duong-Mac, OD's NPI number?
Justin Duong-Mac, OD's National Provider Identifier (NPI) is 1568089738, issued on Jul 2, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Justin Duong-Mac, OD located?
The NPPES record lists a practice address at 4150 Clement St, San Francisco, CA, 94121. Phone: (415) 221-4810. Providers update this record themselves, so call before visiting.
How can I verify Justin Duong-Mac, OD's license?
NPPES lists California license number 34538, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Justin Duong-Mac, OD prescribe under Medicare Part D?
In 2024, Justin Duong-Mac, OD had 39 Medicare Part D claims for 29 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.