NPPES file of Aug 9, 2026

Anthony Hung Chau, M.D.

Vascular Surgery Physician · Orange, CA

Anthony Hung Chau, M.D. is a vascular surgery physician with a practice address in Orange, California, and NPI 1699055988, issued on Aug 18, 2011. Check the license (California A122915, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1699055988
Name
Anthony Hung Chau
Credential
M.D.
Primary taxonomy
Vascular Surgery Physician 2086S0129X
License numbers
A122915 CA
52516 AZ
Self-reported in NPPES; status is on the state search
Practice location
101 The City Dr S, Orange, CA 92868
Phone
(714) 880-7812
Enumerated
Aug 18, 2011
Record last updated
Jun 4, 2025
Medicare enrollment
Enrolled (PECOS I20160727002852); accepts Medicare assignment
Medical or professional school
University Of California, Geffen School Of Medicine, 2011
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 101 The City Dr S

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Danny Abad, PAPhysician Assistant1477158673
  2. Edward AbaradoStudent in an Organized Health Care Education/Training Program1912855198
  3. Nagina Abdiani, DOGeriatric Medicine (Family Medicine) Physician1518543271
  4. Mariam Abdul-Latif, M.D.Pediatrics Physician1538418884
  5. Eric AbelloOtolaryngology Physician1922566215
  6. Brandon Abeyta, MDAnesthesiology Physician1841291804

Verify Anthony Hung Chau in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A122915
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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87% fewer Medicare Part D claims than the average vascular surgery physician in 2024

26 Medicare Part D claims for 11 beneficiaries, against an average of 201 among the 3,936 providers of this specialty who prescribed in Part D.

  1. Anthony Chau26
  2. Specialty average201

Most prescribed

  1. Clopidogrel14 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: $21,827.46

77 payments; by number, the most common kind was food and beverage; the largest payer was Inari Medical, Inc. The 4,059 providers of this specialty with any payment received $6,178.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Anthony Chau$21,827
  2. Specialty average$6,178

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

  1. University Surgeons OF Orange A Medical GroupOrange, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Anthony Hung Chau among 580 vascular surgery physician records in California

Anthony Hung Chau, M.D. is one of 580 vascular surgery physician records with a practice address in California. 84% 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 72% of them.

  • NPI issued2011 · 72% of these records are older, 24% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2011 · median 2003 among the 411 with a school on file
  • Record last updated2025 · 53% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086S0129X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Vascular Surgery Physician providers in California

There are 580 vascular surgery physician records in California.

The 8 vascular surgery physician records with the nearest ZIP codes

  1. Jeffrey Ballard, M.D.Orange, CA 928681205837200
  2. Douglas Brownell, MDOrange, CA 928681013020411
  3. Samuel Chen, M.D.Orange, CA 928681164786521
  4. Daniel Flanigan, M.D.Orange, CA 928681770584534
  5. Roy Fujitani, M.D.Orange, CA 928681164429015
  6. Sidney Glazer, MDOrange, CA 928681063583037
  7. Timothy Harward, M.D.Orange, CA 928681982605986
  8. Nii-Kabu Kabutey, MDOrange, CA 928681952578262

Common questions

What is Anthony Hung Chau, M.D.'s NPI number?

Anthony Hung Chau, M.D.'s National Provider Identifier (NPI) is 1699055988, issued on Aug 18, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Anthony Hung Chau, M.D. located?

The NPPES record lists a practice address at 101 The City Dr S, Orange, CA, 92868. Phone: (714) 880-7812. Providers update this record themselves, so call before visiting.

How can I verify Anthony Hung Chau, M.D.'s license?

NPPES lists California license number A122915, 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 Anthony Hung Chau, M.D. prescribe under Medicare Part D?

In 2024, Anthony Hung Chau, M.D. had 26 Medicare Part D claims for 11 beneficiaries; the average among vascular surgery physician prescribers was 201. 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.