Geoffrey Won-Chen Leung, M.D.
Family Medicine Physician · Riverside, CA
Geoffrey Won-Chen Leung, M.D. is a family medicine physician with a practice address in Riverside, California, and NPI 1831261155, issued on Nov 14, 2006. Check the license (California A89812, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Geoffrey Won-Chen Leung
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A89812 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9415 Mission Blvd, Riverside, CA 92509
- Phone
- (951) 360-8795
- Enumerated
- Nov 14, 2006
- Record last updated
- Mar 7, 2023
- Fax
- (951) 360-8798
- Medicare enrollment
- Enrolled (PECOS I20120106000395); accepts Medicare assignment
- Medical or professional school
- Baylor College Of Medicine, 2003
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 9415 Mission Blvd
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Verify Geoffrey Won-Chen Leung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A89812Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- County OF RiversidePalm Springs, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Geoffrey Won-Chen Leung among 17,133 family medicine physician records in California
Geoffrey Won-Chen Leung, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2003 · median 2005 among the 10,652 with a school on file
- Record last updated2023 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
258 family medicine physician records list a practice address in Riverside
They are 258 of the 13,893 NPPES records with a practice address in Riverside, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Riverside → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Sabeen Abdul Sattar, MDRiverside, CA 925091730335084
- Edward Bacho, M.D.Jurupa Valley, CA 925091922362581
- Pooja BhojakJurupa Valley, CA 925091881000438
- Cynthia Cheng, MDRiverside, CA 925091932780939
- Yukuen Chung, M.D.Riverside, CA 925091437162005
- Prateek Jindal, DORiverside, CA 925091427038736
- Samuel Oh, MDRiverside, CA 925091760466197
- Jonathan Park, MDJurupa Valley, CA 925091205324969
Common questions
What is Geoffrey Won-Chen Leung, M.D.'s NPI number?
Geoffrey Won-Chen Leung, M.D.'s National Provider Identifier (NPI) is 1831261155, issued on Nov 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Geoffrey Won-Chen Leung, M.D. located?
The NPPES record lists a practice address at 9415 Mission Blvd, Riverside, CA, 92509. Phone: (951) 360-8795. Providers update this record themselves, so call before visiting.
How can I verify Geoffrey Won-Chen Leung, M.D.'s license?
NPPES lists California license number A89812, 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.
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.