Yi-Chia Wu, M.D.
Gastroenterology Physician · Covina, CA
Yi-Chia Wu, M.D. is a gastroenterology physician with a practice address in Covina, California, and NPI 1174058341, issued on Apr 25, 2017. Check the license (California A187617, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Yi-Chia Wu
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A187617 CA
Self-reported in NPPES; status is on the state search - Practice location
- 500 W San Bernardino RD, Covina, CA 91722
- Phone
- (626) 960-2326
- Enumerated
- Apr 25, 2017
- Record last updated
- May 6, 2026
- Medicare enrollment
- Enrolled (PECOS I20230906003405); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 2017
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 500 W San Bernardino RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Wylie Douglass, NPFamily Medicine Physician1427807692
- Anne Quismorio, MDRheumatology Physician1073740825
- Syed Mohsin SaghirGastroenterology Physician1225569494
Verify Yi-Chia Wu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A187617Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average gastroenterology physician in 2024
477 Medicare Part D claims for 192 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Omeprazole113 claims
- Gavilyte-G66 claims
- Esomeprazole Magnesium49 claims
- Pantoprazole Sodium35 claims
- Famotidine30 claims
- Linzess27 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: $744.11
27 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
- Citrus Valley Gastroenterology A Medical CorporationCovina, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Yi-Chia Wu among 2,140 gastroenterology physician records in California
Yi-Chia Wu, M.D. 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 2017, is newer than 91% of them.
- NPI issued2017 · 91% of these records are older, 6% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2017 · 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 Covina → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Syed Mohsin SaghirCovina, CA 917221225569494
- Shahnawaz Jaffer, M.D.Covina, CA 917231649301698
- Michael Oliver, MDCovina, CA 917231487613014
- Hussein Abidali, DORancho Cucamonga, CA 917301205274768
- Deborah Anghesom-Negusse, MDRancho Cucamonga, CA 917301780862169
- Muhammad Hammami, M.D.Rancho Cucamonga, CA 917301073801809
- Bhavesh Patel, M.D.Rancho Cucamonga, CA 917301952543514
- Andrea Tieng, M.D.Rancho Cucamonga, CA 917301356528566
Common questions
What is Yi-Chia Wu, M.D.'s NPI number?
Yi-Chia Wu, M.D.'s National Provider Identifier (NPI) is 1174058341, issued on Apr 25, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Yi-Chia Wu, M.D. located?
The NPPES record lists a practice address at 500 W San Bernardino RD, Covina, CA, 91722. Phone: (626) 960-2326. Providers update this record themselves, so call before visiting.
How can I verify Yi-Chia Wu, M.D.'s license?
NPPES lists California license number A187617, 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 Yi-Chia Wu, M.D. prescribe under Medicare Part D?
In 2024, Yi-Chia Wu, M.D. had 477 Medicare Part D claims for 192 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.