Xiaoshuang Chen, M.D.
Family Medicine Physician · Oakland, CA
Xiaoshuang Chen, M.D. is a family medicine physician with a practice address in Oakland, California, and NPI 1902292030, issued on Apr 15, 2015. Check the license (California A156687, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Xiaoshuang Chen
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A156687 CA
Self-reported in NPPES; status is on the state search - Practice location
- 835 Webster Street,, Oakland, CA 94607
- Phone
- (510) 318-5800
- Enumerated
- Apr 15, 2015
- Record last updated
- Feb 14, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (510) 986-8681
- Medicare enrollment
- Enrolled (PECOS I20190222001796); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Verify Xiaoshuang Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A156687Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% more Medicare Part D claims than the average family medicine physician in 2024
5,057 Medicare Part D claims for 552 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Atorvastatin Calcium517 claims
- Amlodipine Besylate396 claims
- Losartan Potassium307 claims
- Metformin Hcl253 claims
- Alendronate Sodium235 claims
- Famotidine157 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
- Asian Health ServicesOakland, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Xiaoshuang Chen among 17,133 family medicine physician records in California
Xiaoshuang Chen, 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 2015, is newer than 74% of them.
- NPI issued2015 · 74% of these records are older, 24% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2015 · median 2005 among the 10,652 with a school on file
- Record last updated2019 · 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).
Family Medicine Physician providers in California
There are 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Oakland → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Kimberly Seu Chang, MDOakland, CA 946071851470330
- Hua Chen, M.D.Oakland, CA 946071457375297
- Arthur Chen, MDOakland, CA 946071871663898
- Steven Chen, MDOakland, CA 946071902976434
- Tammy Chen, MDOakland, CA 946071093887721
- Zhi Huang, MDOakland, CA 946071942363999
- George Lee, MDOakland, CA 946071306916895
- Susan Lo, MDOakland, CA 946071386723435
Common questions
What is Xiaoshuang Chen, M.D.'s NPI number?
Xiaoshuang Chen, M.D.'s National Provider Identifier (NPI) is 1902292030, issued on Apr 15, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Xiaoshuang Chen, M.D. located?
The NPPES record lists a practice address at 835 Webster Street,, Oakland, CA, 94607. Phone: (510) 318-5800. Providers update this record themselves, so call before visiting.
How can I verify Xiaoshuang Chen, M.D.'s license?
NPPES lists California license number A156687, 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 Xiaoshuang Chen, M.D. prescribe under Medicare Part D?
In 2024, Xiaoshuang Chen, M.D. had 5,057 Medicare Part D claims for 552 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.