Dr. Derek Y. Hsu, MD

Dr. Hsu practices at Southern California Dermatology in Santa Ana, California.

Dr. Hsu's NPI, 1477944841, was assigned on February 6, 2015. Dr. Hsu graduated from Feinberg School of Medicine in 2017. Dr. Hsu holds California license A172646.

Dr. Hsu's primary practice is Southern California Dermatology, at 1125 E 17th St, Santa Ana, CA 92701 in Orange County. The practice phone is (949) 644-0101.

Dr. Hsu's primary practice is Southern California Dermatology in Santa Ana, California. The medical group on file is Southern California Dermatology. Dmand AI also links Dr. Hsu to 2 more group practices and clinics and 1 medical group, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hsu practices, 2 sites in all. Vendor and product names are available with a free account.

Dermatology is Dr. Hsu's primary specialty in the NPI Registry, under taxonomy code 207N00000X. Dr. Hsu is board certified in dermatology by the American Board of Dermatology. Dmand AI has Dr. Hsu's licenses on file in 2 states: California and Illinois.

Dmand AI lists acne, acute skin infection, benign or precancerous skin growths, cold sores or genital herpes, contact dermatitis, hives, itchy rashes and joint cyst among the conditions Dr. Hsu treats.

CMS data shows 610 Medicare services from Dr. Hsu across 10 procedure codes in 2024, for 206 Medicare patients. Medicare paid $36,549 for them. Every service was in an office.

CMS counts 206 Medicare patients who saw Dr. Hsu in 2024. The largest group is 65 to 74, with 97 patients. 75% of them have high cholesterol, and 69% have high blood pressure. 27% are also on Medicaid. Their average risk score is 1.37, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Hsu's median patient age at 51, with 49% women.

In 2024, Dr. Hsu wrote 1,218 Medicare Part D claims for 380 patients. 92% of them were for generic drugs. CMS names the drug for 989 of them, across 25 drugs with 11 or more claims each, at $81,954 in total drug cost. In 2023, CMS named 805 claims across 25 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 85 out of 100 for Dr. Hsu for performance year 2024, reported as part of a group. Dr. Hsu accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 118 procedures of removal or shaving of skin growth by Dr. Hsu, more than 86% of the clinicians it reports for that procedure.

Dmand AI links 58 papers to Dr. Hsu, published from 2011 to 2022. 2017 was the busiest year, with 13. The most frequent topics are Dermatitis, Atopic, Comorbidity and Length of Stay. Dr. Hsu has published most often in Br J Dermatol. Dr. Hsu's most frequent co-authors are Vivek Singam, MD, Ryan Sacotte and Muhammad Nadeem Yousaf, MD.

CMS Open Payments shows 331 general payments to Dr. Hsu from 27 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 89% of the total. Abbvie Inc. paid the most, $2,947.

Dr. Hsu graduated from Feinberg School of Medicine in 2017.

Dr. Hsu is in network with 12 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.