Yi Yi Liu, MD
Family Medicine Physician · San Mateo, CA
Yi Yi Liu, MD is a family medicine physician with a practice address in San Mateo, California, and NPI 1255416236, issued on Oct 26, 2006. Check the license (California A65470, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Yi Yi Liu
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A65470 CA
Self-reported in NPPES; status is on the state search - Practice location
- 222 W 39TH Ave, San Mateo, CA 94403
- Phone
- (650) 573-3702
- Enumerated
- Oct 26, 2006
- Record last updated
- Dec 27, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110818000917); accepts Medicare assignment
- Medical or professional school
- Northeastern Ohio University College Of Medicine, 1995
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 222 W 39TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Shea AndersonClinical Social Worker1689964991
- Zohra Ansari, MSWClinical Social Worker1326462904
Verify Yi Yi Liu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A65470Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average family medicine physician in 2024
1,776 Medicare Part D claims for 145 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 29 claims were for opioids.
Most prescribed
- Atorvastatin Calcium137 claims
- Losartan Potassium97 claims
- Amlodipine Besylate85 claims
- Metformin Hcl85 claims
- Lisinopril82 claims
- Levothyroxine Sodium71 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.
Bills Medicare through one group practice
- County OF San MateoSan Mateo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Yi Yi Liu among 17,133 family medicine physician records in California
Yi Yi Liu, MD 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 updated2011 · 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).
39 family medicine physician records list a practice address in San Mateo
They are 39 of the 3,909 NPPES records with a practice address in San Mateo, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Mateo → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Eliane Bitar, MDSan Mateo, CA 944031679036875
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- Ernesto Hipolito, MDSan Mateo, CA 944031902967342
- Cora Hoover, M.D.San Mateo, CA 944031518025865
- Sana Jivraj, MDSan Mateo, CA 944031881047181
- Scott Morrow, MD MPH MBASan Mateo, CA 944031548316342
- Margaret Murray, MDSan Mateo, CA 944031275093957
- Seethim Naicker, MDSan Mateo, CA 944031003443052
Common questions
What is Yi Yi Liu, MD's NPI number?
Yi Yi Liu, MD's National Provider Identifier (NPI) is 1255416236, issued on Oct 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Yi Yi Liu, MD located?
The NPPES record lists a practice address at 222 W 39TH Ave, San Mateo, CA, 94403. Phone: (650) 573-3702. Providers update this record themselves, so call before visiting.
How can I verify Yi Yi Liu, MD's license?
NPPES lists California license number A65470, 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 Yi Liu, MD prescribe under Medicare Part D?
In 2024, Yi Yi Liu, MD had 1,776 Medicare Part D claims for 145 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.