You-Jen Chou, MD
Gastroenterology Physician · Irvine, CA
You-Jen Chou, MD is a gastroenterology physician with a practice address in Irvine, California, and NPI 1104070887, issued on Nov 8, 2008. Check the license (California A111307, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- You-Jen Chou
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A111307 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Fivepoint, Irvine, CA 92618
- Phone
- (800) 826-4673
- Enumerated
- Nov 8, 2008
- Record last updated
- May 5, 2026
- Medicare enrollment
- Enrolled (PECOS I20120109000079); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 2008
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 1000 Fivepoint
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mary Alessi, PA-CPhysician Assistant1962711838
- Tara Anderson, PA-CPhysician Assistant1770058349
- Aubree Ashdown, PA-CPhysician Assistant1679244503
- Ghazal Bahri, M.D.Hospitalist Physician1770013146
- Meg Camille Baldonado, FNP-CFamily Nurse Practitioner1346602604
- Joseph Barrera, FNPFamily Nurse Practitioner1306289491
Verify You-Jen Chou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A111307Check 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% fewer Medicare Part D claims than the average gastroenterology physician in 2024
777 Medicare Part D claims for 245 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Omeprazole183 claims
- Pantoprazole Sodium80 claims
- Sod Sulf-Potass Sulf-Mag Sulf80 claims
- Esomeprazole Magnesium67 claims
- Dexlansoprazole Dr53 claims
- Famotidine45 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,008.40
40 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 2 group practices
- City OF Hope Medical FoundationIrvine, CA
- United Medical DoctorsIrvine, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
You-Jen Chou among 2,140 gastroenterology physician records in California
You-Jen Chou, MD 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 2008, is newer than 63% of them.
- NPI issued2008 · 63% of these records are older, 31% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2008 · median 2002 among the 1,538 with a school on file
- Record last updated2026 · 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 Irvine → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Ardalan Babaknia, MDIrvine, CA 926181366527491
- Shahrooz BemanianIrvine, CA 926181629123070
- Lino Deguzman, M.D.Irvine, CA 926181346324720
- John Hoefs, MDIrvine, CA 926181154425742
- David Kaufman, D.O.Irvine, CA 926181508893363
- Herbert Lee, MDIrvine, CA 926181740206689
- Paul Lee, MDIrvine, CA 926181760531693
- Hooshang Meshkinpour, M.D.Irvine, CA 926181053386243
Common questions
What is You-Jen Chou, MD's NPI number?
You-Jen Chou, MD's National Provider Identifier (NPI) is 1104070887, issued on Nov 8, 2008. An NPI identifies a provider in billing; it is not a license.
Where is You-Jen Chou, MD located?
The NPPES record lists a practice address at 1000 Fivepoint, Irvine, CA, 92618. Phone: (800) 826-4673. Providers update this record themselves, so call before visiting.
How can I verify You-Jen Chou, MD's license?
NPPES lists California license number A111307, 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 You-Jen Chou, MD prescribe under Medicare Part D?
In 2024, You-Jen Chou, MD had 777 Medicare Part D claims for 245 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is You-Jen Chou, MD's MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.