Alvin Y. Au, MD FACG
Gastroenterology Physician · Hanford, CA
Alvin Y. Au, MD FACG is a gastroenterology physician with a practice address in Hanford, California, and NPI 1477639193, issued on Oct 27, 2006. Check the license (California A45911, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alvin Y. Au
- Credential
- MD FACG
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A45911 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1360 Bailey Dr, Hanford, CA 93230
- Phone
- (559) 584-6499
- Enumerated
- Oct 27, 2006
- Record last updated
- Mar 10, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (559) 584-8124
- Medicaid ID
- 00A459110 CA
- Medicare enrollment
- Enrolled (PECOS I20090224000356); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At San Antonio, 1983
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Verify Alvin Y. Au in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A45911Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.1 times the Medicare Part D claims of the average gastroenterology physician in 2024
3,334 Medicare Part D claims for 786 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Omeprazole615 claims
- Pantoprazole Sodium435 claims
- Famotidine401 claims
- Linzess309 claims
- Dicyclomine Hcl260 claims
- Esomeprazole Magnesium98 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,145.70
135 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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
- Advanced Digestive Medical Center CorpHanford, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alvin Y. Au among 2,140 gastroenterology physician records in California
Alvin Y. Au, MD FACG is one of 2,140 gastroenterology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 48% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1983 · median 2002 among the 1,538 with a school on file
- Record last updated2015 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Hanford → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Mahum NadeemHanford, CA 932301235781576
- Hasham Masood Qureshi, MDHanford, CA 932301659063865
- Boris Reznik, M.D.Hanford, CA 932301710087846
- Sohrab Naini, MDPorterville, CA 932571831352095
- Ahmed Rashed, M.D.Porterville, CA 932571831165729
- Bankim Dalal, MDVisalia, CA 932771174500607
- William Hsueh, M.D.Visalia, CA 932911972948164
- Shirley Pua, M.D.Visalia, CA 932911164426961
Common questions
What is Alvin Y. Au, MD FACG's NPI number?
Alvin Y. Au, MD FACG's National Provider Identifier (NPI) is 1477639193, issued on Oct 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alvin Y. Au, MD FACG located?
The NPPES record lists a practice address at 1360 Bailey Dr, Hanford, CA, 93230. Phone: (559) 584-6499. Providers update this record themselves, so call before visiting.
How can I verify Alvin Y. Au, MD FACG's license?
NPPES lists California license number A45911, 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 Alvin Y. Au, MD FACG prescribe under Medicare Part D?
In 2024, Alvin Y. Au, MD FACG had 3,334 Medicare Part D claims for 786 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Alvin Y. Au, MD FACG's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.