Dr. Chih-Hsin Chen, MD

Dr. Chen practices at PIH Health Downey Hospital in Downey, California, part of PIH Health.

Dr. Chen's NPI, 1346404977, was assigned on July 14, 2008. Dr. Chen graduated from Keck School of Medicine of USC in 2006. Dr. Chen holds California license A103838.

Dr. Chen's primary practice is PIH Health Downey Hospital, at 11500 Brookshire Avenue, Downey, CA 90241 in Los Angeles County. The practice phone is (562) 904-5000.

Dr. Chen's primary practice is PIH Health Downey Hospital in Downey, California, part of PIH Health. The medical group on file is PIH Health Physicians. Dmand AI also links Dr. Chen to 1 more group practice or clinic, 1 home health agency and 1 hospice, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices, 4 sites in all. Vendor and product names are available with a free account.

Internal medicine is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chen is board certified in internal medicine by the American Board of Internal Medicine. Dr. Chen is licensed in California.

Dmand AI lists acute diabetes, cardiac arrhythmia, cellulitis, collapsed lung, congestive heart failure, electrolyte disorders, gastrointestinal bleeding and gastrointestinal infection among the conditions Dr. Chen treats.

CMS data shows 549 Medicare services from Dr. Chen across 4 procedure codes in 2024, for 290 Medicare patients. Medicare paid $43,013 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 290 Medicare patients who saw Dr. Chen in 2024. The largest group is 65 to 74, with 113 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 79% are also on Medicaid. Their average risk score is 3.60, 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 66, with 51% women.

In 2024, Dr. Chen wrote 309 Medicare Part D claims for 138 patients. 86% of them were for generic drugs. CMS names the drug for 92 of them, across 5 drugs with 11 or more claims each, at $298 in total drug cost. In 2023, CMS named 96 claims across 7 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 79 out of 100 for Dr. Chen for performance year 2024, reported as part of a group. Dr. Chen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

CMS Open Payments shows 12 general payments to Dr. Chen from 8 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $258.

Dr. Chen graduated from Keck School of Medicine of USC in 2006.

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.