Winson Liu, M.D.
Family Medicine Physician · Riverside, CA
Winson Liu, M.D. is a family medicine physician with a practice address in Riverside, California, and NPI 1861594681, issued on Sep 2, 2006. Check the license (California A64329, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Winson Liu
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A64329 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3838 Sherman Dr, Riverside, CA 92503
- Phone
- (951) 688-3849
- Enumerated
- Sep 2, 2006
- Record last updated
- Nov 19, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (951) 688-8045
- Medicaid ID
- 00A643290 CA
- Medicare enrollment
- Enrolled (PECOS I20040810000554); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At San Antonio, 1995
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 3838 Sherman Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Michelle Garcia, PA-CPhysician Assistant1952396392
- Timothy Gray, M.D.Orthopaedic Surgery of the Spine Physician1972565877
Verify Winson Liu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A64329Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average family medicine physician in 2024
1,849 Medicare Part D claims for 155 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Atorvastatin Calcium220 claims
- Amlodipine Besylate110 claims
- Metformin Hcl91 claims
- Alendronate Sodium88 claims
- Lisinopril85 claims
- Famotidine73 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: $13.26
1 payment: food and beverage; the largest payer was GlaxoSmithKline, LLC. The 55,478 providers of this specialty with any payment received $902.55 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.
Winson Liu among 17,133 family medicine physician records in California
Winson Liu, 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
- Graduated1995 · median 2005 among the 10,652 with a school on file
- Record last updated2007 · 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
- Carmen Ayroso, M.D.Riverside, CA 925031881636413
- Cameron Kaiser, M.D.Riverside, CA 925031972671196
- Tamara Kurmanalieva, MDRiverside, CA 925031720291222
- Luther Mangoba, M.D.Riverside, CA 925031528041894
- Peter Paul, M.D.Riverside, CA 925031508837352
- Harvey Pfiefle, MDRiverside, CA 925031942301445
- Lyn Pintelon, DORiverside, CA 925031669467148
- Tedmund Po, M.D.Riverside, CA 925031518042167
Common questions
What is Winson Liu, M.D.'s NPI number?
Winson Liu, M.D.'s National Provider Identifier (NPI) is 1861594681, issued on Sep 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Winson Liu, M.D. located?
The NPPES record lists a practice address at 3838 Sherman Dr, Riverside, CA, 92503. Phone: (951) 688-3849. Providers update this record themselves, so call before visiting.
How can I verify Winson Liu, M.D.'s license?
NPPES lists California license number A64329, 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 Winson Liu, M.D. prescribe under Medicare Part D?
In 2024, Winson Liu, M.D. had 1,849 Medicare Part D claims for 155 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.