Medicare Enrolled
Dr. Alvin Au, MD FACG
Gastroenterology · Hanford, CA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Low-engagement
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Au from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Au
Dr. Alvin Au is a gastroenterology specialist in Hanford, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Au performed 3,356 Medicare services across 2,924 unique beneficiaries.
Between the years covered by Open Payments, Dr. Au received a total of $12,426 from 46 pharmaceutical and/or device companies across 902 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in gastroenterology. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Au is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 19 years in practice
▲ Top 3% volume in CA
$12,426 industry payments
Medicare Practice Summary
Medicare Utilization ↗3,356
Medicare services
Top 3% in CA for gastroenterology
2,924
Unique beneficiaries
$112
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~177 Medicare services per year of practice
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
826 | $98 | $239 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
716 | $133 | $245 |
| Colon polyp removal with endoscopic snare This procedure removes polyps or growths from the large bowel using a flexible tube with a camera and a wire loop tool. The snare is used to cut off the growths during the examination. |
263 | $159 | $1,169 |
| Upper GI endoscopy with biopsy A procedure to collect tissue samples from the esophagus, stomach, or upper small intestine using a flexible tube with a camera. The samples are examined to check for abnormalities. |
245 | $89 | $1,221 |
| New patient office visit, complex (60-74 min) | 241 | $159 | $300 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
214 | $115 | $290 |
| Colonoscopy with biopsy A procedure to collect tissue samples from the large intestine using a flexible tube with a camera. The samples are examined to check for abnormalities or disease. |
172 | $113 | $1,105 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
142 | $52 | $215 |
| Colonoscopy A diagnostic exam of the large bowel using a flexible endoscope to visualize the interior of the colon. |
134 | $132 | $1,250 |
| Ultrasound scan of organ tissue for measuring elasticity This procedure uses ultrasound technology to assess the stiffness or elasticity of organ tissues. It helps evaluate tissue characteristics without invasive methods. |
107 | $81 | $250 |
| Moderate sedation during GI endoscopy Sedation services provided by the physician performing a gastrointestinal endoscopic procedure. This requires an independent trained observer to assist in monitoring the patient. |
69 | $4 | $150 |
| Dilation of esophagus | 59 | $31 | $652 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
40 | $59 | $240 |
| Injection beneath large bowel lining via endoscope A flexible endoscope is used to inject medication or fluid beneath the lining of the large intestine. |
37 | $16 | $569 |
| Destruction of large bowel polyp via endoscope Removal of a polyp or growth in the large intestine using a flexible tube with a camera. The procedure is performed through the endoscope to destroy the tissue. |
36 | $140 | $861 |
| Removal of large bowel tissue using flexible endoscope A procedure to remove tissue from the large intestine using a flexible tube with a camera. The endoscope allows the provider to access and excise the tissue directly. |
30 | $237 | $1,250 |
| Endoscopic control of bleeding in large intestine A flexible tube with a camera is inserted into the large intestine to locate and stop bleeding. |
13 | $156 | $773 |
| Colon polyp removal with endoscope and cautery This procedure removes polyps or growths from the large bowel using a flexible tube with a camera. Electrical cautery is used to stop bleeding during the removal. |
12 | $57 | $750 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
Industry Payment Transparency
Open Payments through 2024 ↗$12,426
Total received (2018-2024)
Avg $1,775/year across 7 years
Top 16% in CA for gastroenterology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
46
Companies
902
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$12,409 (99.9%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$17 (0.1%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$2,146
2023
$2,600
2022
$2,114
2021
$1,696
2020
$927
2019
$1,328
2018
$1,615
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
ABBVIE INC.
$333
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$288
Celgene Corporation
$265
Janssen Biotech, Inc.
$224
Takeda Pharmaceuticals U.S.A., Inc.
$196
IRONWOOD PHARMACEUTICALS, INC
$192
PFIZER INC.
$168
Madrigal Pharmaceuticals
$94
Ardelyx, Inc.
$94
GENZYME CORPORATION
$72
AIMMUNE THERAPEUTICS, INC.
$54
Phathom Pharmaceuticals, Inc.
$50
Boston Scientific Corporation
$47
Lilly USA, LLC
$37
Celltrion USA Inc.
$16
ALBIREO PHARMA, INC.
$14
Top 3 companies account for 41.3% of 2024 payments
All-time payments by company (2018-2024) ›
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$1,876
AbbVie Inc.
$1,676
Takeda Pharmaceuticals U.S.A., Inc.
$1,260
Celgene Corporation
$1,242
Janssen Biotech, Inc.
$971
ABBVIE INC.
$869
AbbVie, Inc.
$553
Ironwood Pharmaceuticals, Inc
$440
Allergan Inc.
$381
GENZYME CORPORATION
$317
Synergy Pharmaceuticals Inc
$258
IRONWOOD PHARMACEUTICALS, INC
$252
Ardelyx, Inc.
$247
Intercept Pharmaceuticals, Inc.
$243
Gilead Sciences, Inc.
$211
PFIZER INC.
$186
Braintree Laboratories, Inc.
$154
E.R. Squibb & Sons, L.L.C.
$117
Nestle HealthCare Nutrition Inc.
$116
Boston Scientific Corporation
$112
Shionogi Inc
$108
Madrigal Pharmaceuticals
$94
INTERCEPT PHARMACEUTICALS, INC.
$81
Shire North American Group Inc
$69
AIMMUNE THERAPEUTICS, INC.
$54
Regeneron Healthcare Solutions, Inc.
$52
Phathom Pharmaceuticals, Inc.
$50
Prometheus Laboratories Inc.
$42
AstraZeneca Pharmaceuticals LP
$42
Lilly USA, LLC
$37
QOL Medical, LLC
$35
Celltrion USA Inc.
$33
Ferring Pharmaceuticals Inc.
$31
Daiichi Sankyo Inc.
$28
UCB, Inc.
$28
Alfasigma USA, Inc.
$26
RedHill Biopharma Inc.
$25
Merck Sharp & Dohme LLC
$17
Lucid Diagnostics Inc.
$16
Boehringer Ingelheim Pharmaceuticals, Inc.
$15
ALBIREO PHARMA, INC.
$14
Mauna Kea Technologies, Inc.
$14
Dova Pharmaceuticals
$13
Allergan, Inc.
$12
Micro-tech Endoscopy USA, Inc.
$10
Napo Pharmaceuticals Inc
$3
Top 3 companies account for 38.7% of all-time payments
Associated products mentioned in payments ›
APRISO · Agile Esophageal · All Products · Amitiza · CLENPIQ · CREON · CYLTEZO · Cimzia · Creon · DIFICID · DUPIXENT · Doptelet · ENTYVIO · EOHILIA · Entyvio · GATTEX · HUMIRA · Humira · IBSRELA · INJECTAFER · IQIRVO · LINZESS · Linzess · MAVYRET · MOTEGRITY · MOVANTIK · MOVIPREP · Mavyret · Motegrity · Movantik · Mulpleta · Mytesi · OCALIVA · OMVOH · Orca · REBYOTA · RELISTOR · REMICADE · RESMETIROM · RINVOQ · SIMPONI · SKYRIZI · STELARA · SUCRAID · SUPREP · SUTAB · Sucraid · Symproic · TREMFYA · TRULANCE · Talicia · Trulance · VEGZELMA · VELSIPITY · VIBERZI · VOQUEZNA · VOWST · XELJANZ · XIFAXAN · XIFIXAN · YUFLYMA · ZENPEP · ZEPOSIA · Zelnorm
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Gastroenterologists within 10 mi
5
Per 100K population
3.3
County median income
$68,750
Nearest hospital
ADVENTIST HEALTH HANFORD
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Au is a clinical cardiology specialist, with above-average Medicare volume (top 3% in CA), with low-engagement industry engagement in the top 16% of CA peers, with 19 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Au experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Au performed 826 office visit, established patient (30-39 min) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Au receive payments from pharmaceutical companies?
Yes. Dr. Au received a total of $12,426 from 46 companies across 902 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Au's costs compare to other gastroenterologists in Hanford?
Dr. Au's average Medicare payment per service is $112. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Au) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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