Quan Chen, MD
Emergency Medicine Physician · San Leandro, CA
Quan Chen, MD is an emergency medicine physician with a practice address in San Leandro, California, and NPI 1174086029, issued on Apr 8, 2019. Check the license (California A180358, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Quan Chen
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A180358 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2500 Merced St, San Leandro, CA 94577
- Phone
- (510) 454-1000
- Enumerated
- Apr 8, 2019
- Record last updated
- Aug 8, 2022
- Medicare enrollment
- Enrolled (PECOS I20221007002846); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 2500 Merced St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rabiatu Abdullah, M.D.Emergency Medicine Physician1497833248
- Scott Abramson, M.D.Neurology Physician1891873667
- Jayaprada Achanta, M.D.Anesthesiology Physician1053463851
- Kristi Adachi, PHARMDPharmacist1396456737
- Mary Grace Aguayo, CRTCertified Respiratory Therapist1467923730
- Jatinder AhluwaliaPharmacist1508391483
Verify Quan Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A180358Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% more Medicare Part D claims than the average emergency medicine physician in 2024
246 Medicare Part D claims for 179 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 47 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen33 claims
- Cefpodoxime Proxetil26 claims
- Amoxicillin-Clavulanate Potass17 claims
- Ondansetron Odt15 claims
- Oxycodone Hcl12 claims
- Doxycycline Monohydrate11 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
- Permanente Medical Group IncFremont, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Quan Chen among 7,751 emergency medicine physician records in California
Quan Chen, MD is one of 7,751 emergency 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 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2019 · median 2011 among the 4,560 with a school on file
- Record last updated2022 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
59 emergency medicine physician records list a practice address in San Leandro
They are 59 of the 4,976 NPPES records with a practice address in San Leandro, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in San Leandro → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Rabiatu Abdullah, M.D.San Leandro, CA 945771497833248
- Marc Andrews, M.D.San Leandro, CA 945771588743637
- Lewis Baker, M.D.San Leandro, CA 945771912085762
- George Brown, M.D.San Leandro, CA 945771174601660
- Calder Conner, MDSan Leandro, CA 945771770537433
- Brian Cutcliffe, M.D.San Leandro, CA 945771679652721
- Robert Fan, M.D.San Leandro, CA 945771316987977
- Jay Goldman, M.D.San Leandro, CA 945771427136282
Common questions
What is Quan Chen, MD's NPI number?
Quan Chen, MD's National Provider Identifier (NPI) is 1174086029, issued on Apr 8, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Quan Chen, MD located?
The NPPES record lists a practice address at 2500 Merced St, San Leandro, CA, 94577. Phone: (510) 454-1000. Providers update this record themselves, so call before visiting.
How can I verify Quan Chen, MD's license?
NPPES lists California license number A180358, 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 Quan Chen, MD prescribe under Medicare Part D?
In 2024, Quan Chen, MD had 246 Medicare Part D claims for 179 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.