Quanjing Liu, MD
Internal Medicine Physician · Sunnyvale, CA
Quanjing Liu, MD is an internal medicine physician with a practice address in Sunnyvale, California, and NPI 1760588834, issued on Sep 16, 2006. Check the license (California A106228, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Quanjing Liu
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A106228 CA
232591 NY
Self-reported in NPPES; status is on the state search - Practice location
- 401 Old San Francisco RD, Sunnyvale, CA 94086
- Phone
- (408) 730-4360
- Enumerated
- Sep 16, 2006
- Record last updated
- Dec 20, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090618000603); accepts Medicare assignment
- Medical or professional school
- Js Weill Medical College, Cornell University, 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 401 Old San Francisco RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Patti Allen, M.D.Internal Medicine Physician1659438489
- Leone Baron, PT, DPTPhysical Therapist1538708839
- Priya Bhusri, M.D.Internal Medicine Physician1659386019
- Yeralis Cabrero, PT, DPTPhysical Therapist1639991714
- Rafael Cahill, DPTPhysical Therapist1235742057
- Natalie Chan, DPTPhysical Therapist1619730629
Verify Quanjing Liu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A106228Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
33% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,143 Medicare Part D claims for 205 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 33 claims were for opioids.
Most prescribed
- Atorvastatin Calcium245 claims
- Amlodipine Besylate181 claims
- Losartan Potassium110 claims
- Metformin Hcl88 claims
- Levothyroxine Sodium87 claims
- Gabapentin63 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
- Sutter Bay Medical FoundationSunnyvale, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Quanjing Liu among 17,696 internal medicine physician records in California
Quanjing Liu, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2002 · median 2004 among the 11,065 with a school on file
- Record last updated2011 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
48 internal medicine physician records list a practice address in Sunnyvale
They are 48 of the 1,690 NPPES records with a practice address in Sunnyvale, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Sunnyvale → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Priya Bhusri, M.D.Sunnyvale, CA 940861659386019
- Teresa Cheng, MDSunnyvale, CA 940861598772857
- Leon Cheng, MDSunnyvale, CA 940861104834407
- Peter Fay, MDSunnyvale, CA 940861154384337
- Anitha Gundupalli, MDSunnyvale, CA 940861568571206
- Grace Guo, MDSunnyvale, CA 940861902811375
- Jason Hwang, M.D.Sunnyvale, CA 940861669490926
- Robina Moen, M.D.Sunnyvale, CA 940861083720346
Common questions
What is Quanjing Liu, MD's NPI number?
Quanjing Liu, MD's National Provider Identifier (NPI) is 1760588834, issued on Sep 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Quanjing Liu, MD located?
The NPPES record lists a practice address at 401 Old San Francisco RD, Sunnyvale, CA, 94086. Phone: (408) 730-4360. Providers update this record themselves, so call before visiting.
How can I verify Quanjing Liu, MD's license?
NPPES lists California license number A106228, 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 Quanjing Liu, MD prescribe under Medicare Part D?
In 2024, Quanjing Liu, MD had 2,143 Medicare Part D claims for 205 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.