Vivien Au, D.O.
Ophthalmology Physician · Pasadena, CA
Vivien Au, D.O. is an ophthalmology physician with a practice address in Pasadena, California, and NPI 1649550872, issued on Aug 19, 2011. Check the license (California 20A14980, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Vivien Au
- Credential
- D.O.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- 20A14980 CA
OS017656 PA
OT014234 PA
Self-reported in NPPES; status is on the state search - Practice location
- 2619 E Colorado Blvd, Pasadena, CA 91107
- Phone
- (626) 793-3475
- Enumerated
- Aug 19, 2011
- Record last updated
- Nov 6, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170412001963); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2011
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Verify Vivien Au in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A14980Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% more Medicare Part D claims than the average ophthalmology physician in 2024
2,420 Medicare Part D claims for 510 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 38% of claims.
Most prescribed
- Latanoprost860 claims
- Timolol Maleate305 claims
- Brimonidine Tartrate266 claims
- Erythromycin191 claims
- Dorzolamide-Timolol186 claims
- Dorzolamide Hcl121 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: $13.85
1 payment: food and beverage; the largest payer was Thea Pharma Inc. The 13,221 providers of this specialty with any payment received $4,535.02 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
- Sutter Bay Medical FoundationSunnyvale, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Vivien Au among 2,899 ophthalmology physician records in California
Vivien Au, D.O. is one of 2,899 ophthalmology physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 76% of them.
- NPI issued2011 · 76% of these records are older, 22% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2011 · median 2001 among the 1,907 with a school on file
- Record last updated2016 · 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 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in Pasadena → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Sathy Bhavan, MDPasadena, CA 911071457321903
- Jonathan Go, D.O.Pasadena, CA 911071902332349
- Bryan Jones, M.D.Pasadena, CA 911071023441052
- Jay Patel, MDPasadena, CA 911071194958959
- Jeffrey Huang, D.O.San Marino, CA 911081124274998
- Michael Miller, MDPasadena, CA 911061457376774
- David Richardson, M.D.San Marino, CA 911081578553921
- Nizar Abdelfattah, MDPasadena, CA 911051801359393
Common questions
What is Vivien Au, D.O.'s NPI number?
Vivien Au, D.O.'s National Provider Identifier (NPI) is 1649550872, issued on Aug 19, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Vivien Au, D.O. located?
The NPPES record lists a practice address at 2619 E Colorado Blvd, Pasadena, CA, 91107. Phone: (626) 793-3475. Providers update this record themselves, so call before visiting.
How can I verify Vivien Au, D.O.'s license?
NPPES lists California license number 20A14980, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Vivien Au, D.O. prescribe under Medicare Part D?
In 2024, Vivien Au, D.O. had 2,420 Medicare Part D claims for 510 beneficiaries; the average among ophthalmology physician prescribers was 1,518. 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.