Harold E. Quan

Harold Quan practices at Santa Clarita Cardiology Medical Group, Inc. in Newhall, California.

Harold Quan's NPI, 1033220256, was assigned on August 31, 2006. Harold Quan graduated from Universite Libre de Bruxelles Faculty of Medicine in 1972. Harold Quan holds California license A34182.

Harold Quan's primary practice is Santa Clarita Cardiology Medical Group, Inc., at 23928 Lyons Ave Ste 101, Newhall, CA 91321-2452. The practice phone is (661) 255-8321.

Harold Quan's primary practice is Santa Clarita Cardiology Medical Group, Inc. in Newhall, California. Harold Quan is also affiliated with Henry Mayo Newhall Hospital.

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

Cardiovascular disease is Harold Quan's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Harold Quan is board certified in cardiovascular disease by the National Board of Physicians and Surgeons. Dmand AI has Harold Quan's licenses on file in 3 states: California, Pennsylvania and Kentucky.

Dmand AI lists aneurysm, atrial fibrillation and flutter, cardiomyopathy, cerebrovascular disease, chronic hypertension, congestive heart failure, coronary artery disease and heart failure among the conditions Harold Quan treats.

CMS data shows 4,550 Medicare services from Harold Quan across 24 procedure codes in 2024, for 589 Medicare patients. Medicare paid $299,865 for them.

CMS counts 589 Medicare patients who saw Harold Quan in 2024. The largest group is 75 to 84, with 232 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 27% are also on Medicaid. Their average risk score is 1.74, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Harold Quan's median patient age at 75, with 49% women.

In 2024, Harold Quan wrote 3,895 Medicare Part D claims for 293 patients. 88% of them were for generic drugs. CMS names the drug for 3,496 of them, across 60 drugs with 11 or more claims each, at $286,080 in total drug cost. In 2023, CMS named 3,505 claims across 62 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Harold Quan for performance year 2024, reported individually. Harold Quan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Harold Quan as offering telehealth.

CMS Open Payments shows 117 general payments to Harold Quan from 29 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 96% of the total. AstraZeneca Pharmaceuticals LP paid the most, $1,762.

Dmand AI lists 2 awards for Harold Quan, most recently CMS Stage 1 EHR in 2013.

Harold Quan graduated from Universite Libre de Bruxelles Faculty of Medicine in 1972. Harold Quan is a member of ACC.

Harold Quan is in network with 15 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.