Dr. Chun Yen Hsu, MD
- Medicare services, 2024
- 281
- Medicare patients, 2024
- 115
- Part D claims, 2024
- 387
- Industry payments
- $1,433
- Affiliated sites
- 3
- Practice address
- 1668 South Garfield, Suite 100, Alhambra, CA 91801
- Practice phone
- Call (626) 307-0828
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Advanced Diagnostic & Surgical Center
Surgery Center - Medicare-Certified · Alhambra, California
Find Dr. Hsu's professional email, personal email and mobile number
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Dr. Chun Yen Hsu is a gastroenterologist in Alhambra, California
Dr. Hsu practices at Advanced Diagnostic & Surgical Center in Alhambra, California.
Dr. Hsu's NPI, 1902831894, was assigned on July 11, 2006. Dr. Hsu graduated from National Taiwan University College of Medicine in 1977. Dr. Hsu holds California license A37929.
- NPI
- 1902831894NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7810021433
- NPI enumeration date
- July 11, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 307-0828
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chun Yen Hsu practices at Advanced Diagnostic & Surgical Center in Alhambra, California
Dr. Hsu's primary practice is Advanced Diagnostic & Surgical Center, at 1668 South Garfield, Suite 100, Alhambra, CA 91801. The practice phone is (626) 307-0828.
- Advanced Diagnostic & Surgical Center1668 South Garfield, Suite 100, Alhambra, CA 91801Phone(626) 307-0828
Source: Dmand AI Affiliation Data
Dr. Chun Yen Hsu is affiliated with 3 sites of care
Dr. Hsu's primary practice is Advanced Diagnostic & Surgical Center in Alhambra, California. Dmand AI also links Dr. Hsu to 1 physician office and 1 ambulatory surgery center, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Chun Yen Hsu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hsu practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advanced Diagnostic & Surgical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Chun Yen Hsu is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Hsu's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Hsu is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Hsu's licenses on file in 2 states: California and Georgia.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
- Georgia license
Clinical focus
Dmand AI lists acute gastroduodenitis, colonoscopy, gastroduodenitis, gastroenteritis, gastrointestinal bleeding, irritable bowel syndrome (IBS) and upper GI endoscopy among the conditions Dr. Hsu treats.
Gastroenterologists near Dr. Hsu
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Chun Yen Hsu billed Medicare for 281 services in 2024
CMS data shows 281 Medicare services from Dr. Hsu across 5 procedure codes in 2024, for 115 Medicare patients. Medicare paid $28,589 for them.
Dr. Hsu's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2392024: 18323%
- Surgery
- 2023: 1182024: 9817%
Where Dr. Hsu's Medicare services took place, 2024
- In an office18365%
- In a facility9835%
Dr. Hsu compared with the California median for gastroenterologists, 2024
- Dr. Hsu
- California median
- Medicare services
- 281vs 58652% below
- Medicare patients
- 115vs 30262% below
- Part D claims
- 304vs 38020% below
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Hsu's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hsu and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Chun Yen Hsu treated 115 Medicare patients in 2024, average age 75
CMS counts 115 Medicare patients who saw Dr. Hsu in 2024. The largest group is 65 to 74, with 51 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 62% are also on Medicaid. Their average risk score is 1.04, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Hsu's median patient age at 69, with 61% women.
Dr. Hsu's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Hsu's Medicare patients by sex, 2024
- Women6960%
- Men4640%
Chronic conditions among Dr. Hsu's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease50%
- Osteoporosis48%
- Arthritis46%
- Diabetes43%
- Ischemic heart disease29%
- COPD22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hsu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Chun Yen Hsu wrote 387 Medicare Part D claims in 2024
In 2024, Dr. Hsu wrote 387 Medicare Part D claims for 215 patients. 80% of them were for generic drugs. CMS names the drug for 304 of them, across 9 drugs with 11 or more claims each, at $51,270 in total drug cost. In 2023, CMS named 337 claims across 12 drugs.
Dr. Hsu's Part D claims by kind of drug, 2024
- Generic310 claims80%
- Brand-name77 claims20%
Dr. Hsu's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Hsu's Part D claims, 2024
- Antibiotics9%36 of 387 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3372024: 30410%
Drugs named by CMS: 9 in 2024, 12 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Chun Yen Hsu ranks in the 63rd percentile for colonoscopy in Medicare
Dr. Hsu accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 49 procedures of colonoscopy by Dr. Hsu, more than 63% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Hsu ranks in Medicare procedure volume
- Colonoscopy
- 63rd percentile49 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 57th percentile34 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Chun Yen Hsu received $1,433 in industry payments from 2016 to 2025
CMS Open Payments shows 35 general payments to Dr. Hsu from 14 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 91% of the total. Amgen Inc. paid the most, $372.
General payments to Dr. Hsu by program year, 2016 to 2025
General payments to Dr. Hsu by kind, 2016 to 2025
- Food and beverage$1,30891%
- Gifts$1259%
Companies that paid Dr. Hsu the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Chun Yen Hsu graduated from National Taiwan University College of Medicine
Dr. Hsu graduated from National Taiwan University College of Medicine in 1977.
- Medical school
- Board certified in gastroenterology
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Chun Yen Hsu accepts plans from 10 insurance carriers
Dr. Hsu is in network with 10 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Elevance
- LA Care
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Molina
- Regence Health Plans
- +2 more carriersWith a free account
Plan types Dr. Hsu accepts, by number of carriers
- Medicare8
- HMO6
- PPO6
- POS3
- EPO1
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Chun Yen Hsu's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Chun Yen Hsu
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Chun Yen Hsu's NPI number?
Dr. Chun Yen Hsu's NPI number is 1902831894. It was assigned on July 11, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Chun Yen Hsu?
Dr. Chun Yen Hsu is a gastroenterologist in Alhambra, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Chun Yen Hsu practice?
Dr. Hsu practices at 1668 South Garfield, Suite 100, Alhambra, CA 91801. Dr. Hsu's primary practice is Advanced Diagnostic & Surgical Center in Alhambra, California. Dmand AI also links Dr. Hsu to 1 physician office and 1 ambulatory surgery center.
What is Dr. Chun Yen Hsu's office phone number?
The practice phone on file for Dr. Hsu is (626) 307-0828.
What is Dr. Chun Yen Hsu's medical license number?
Dr. Hsu holds California license A37929, one of the licenses on file in 2 states.
Which states has Dr. Chun Yen Hsu been licensed in?
Dmand AI has state licenses on file for Dr. Hsu in California (1982 to 2027) and Georgia (1978 to 1983).
Does Dr. Chun Yen Hsu accept Medicare?
Yes. CMS data shows Dr. Hsu billed Medicare for 281 services in 2024, and Dr. Hsu accepts Medicare assignment.
How many Medicare patients does Dr. Chun Yen Hsu see?
CMS counts 115 Medicare patients who saw Dr. Hsu in 2024, with an average age of 75.
Is Dr. Chun Yen Hsu board certified?
Yes. Dr. Hsu is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Chun Yen Hsu bill to Medicare?
In 2024, Dr. Hsu's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and surgery: digestive system (45380).
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Where did Dr. Chun Yen Hsu go to medical school?
Dr. Hsu graduated from National Taiwan University College of Medicine in 1977.
What drugs does Dr. Chun Yen Hsu prescribe most?
In 2024 Medicare Part D data, Dr. Hsu's most prescribed drugs by claims were Gavilyte-G, Famotidine and Peg 3350-Electrolyte.
Has Dr. Chun Yen Hsu received payments from drug or device companies?
CMS Open Payments shows $1,433 in general payments to Dr. Hsu from 14 companies from 2016 to 2025. The largest total came from Amgen Inc.
How long has Dr. Chun Yen Hsu been practicing?
Dr. Hsu graduated from medical school in 1977, 49 years ago.
What insurance does Dr. Chun Yen Hsu accept?
Dr. Hsu is in network with 10 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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