Dr. Kwan Sian Chen, MD

Dr. Chen practices at Washington Health in Fremont, California, part of Washington Health.

Dr. Chen's NPI, 1619928025, was assigned on May 12, 2006. Dr. Chen graduated from National Taiwan University College of Medicine in 1982. Dr. Chen holds California license A045567.

Dr. Chen's primary practice is Washington Health, at 2000 Mowry Ave, Fremont, CA 94538 in Alameda County. The practice phone is (510) 797-1111.

Dr. Chen's primary practice is Washington Health in Fremont, California, part of Washington Health. Dr. Chen is also affiliated with Alta Bates Summit Medical Center. Dmand AI also links Dr. Chen to 2 more hospitals, 1 physician office and 1 home health agency, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices, 6 sites in all. Vendor and product names are available with a free account.

Interventional cardiology is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207RI0011X. Dr. Chen is board certified in cardiovascular disease by the American Board of Internal Medicine. Dr. Chen is licensed in California.

Dmand AI lists aneurysm, angioplasty, atrial fibrillation and flutter, cardiac catheterization, chronic embolism thrombosis, chronic hypertension, chronic skin ulcer and congestive heart failure among the conditions Dr. Chen treats.

CMS data shows 6,288 Medicare services from Dr. Chen across 24 procedure codes in 2024, for 1,612 Medicare patients. Medicare paid $574,202 for them.

CMS counts 1,612 Medicare patients who saw Dr. Chen in 2024. The largest group is 75 to 84, with 552 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 63% are also on Medicaid. Their average risk score is 2.04, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Chen's median patient age at 71, with 48% women.

In 2024, Dr. Chen wrote 7,817 Medicare Part D claims for 645 patients. 81% of them were for generic drugs. CMS names the drug for 7,342 of them, across 103 drugs with 11 or more claims each, at $1,668,480 in total drug cost. In 2023, CMS named 7,715 claims across 107 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 96 out of 100 for Dr. Chen for performance year 2024, reported individually. Dr. Chen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chen as offering telehealth.

Coronary angioplasty and stenting: 1 to 10 procedures (CMS shows small counts as a range)

Pacemaker insertion or repair: 1 to 10 procedures (CMS shows small counts as a range)

CMS Open Payments shows 1,109 general payments to Dr. Chen from 48 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 91% of the total. Actelion Pharmaceuticals US, Inc. paid the most, $2,559.

Dmand AI lists 1 award for Dr. Chen.

Dr. Chen graduated from National Taiwan University College of Medicine in 1982. Dr. Chen is a member of ACC.

Dr. Chen is in network with 10 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.