Dr. Larry C. Chan, DO

Dr. Chan practices at San Antonio Regional Hospital in Upland, California, part of San Antonio Regional Hospital.

Dr. Chan's NPI, 1215259221, was assigned on February 17, 2010. Dr. Chan graduated from LECOM at Seton Hill - Greensburg in 2007. Dr. Chan's California license number on file is 20A13480.

Dr. Chan's primary practice is San Antonio Regional Hospital, at 999 San Bernardino Road, Upland, CA 91786 in San Bernardino County. The practice phone is (909) 985-2811.

Dr. Chan's primary practice is San Antonio Regional Hospital in Upland, California, part of San Antonio Regional Hospital. The medical group on file is ProHealth Partners. Dmand AI also links Dr. Chan to 2 more group practices and clinics, 1 other site and 1 medical group, each named with a free account.

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

Interventional cardiology is Dr. Chan's primary specialty in the NPI Registry, under taxonomy code 207RI0011X. Dr. Chan is board certified in internal medicine by the AOA Board of Internal Medicine. Dmand AI has Dr. Chan's licenses on file in 3 states: California, Arizona and Texas.

Dmand AI lists aneurysm, angioplasty, aortic atherosclerois, atrial fibrillation and flutter, cardiac catheterization, cardiomyopathy, cerebrovascular disease and chronic hypertension among the conditions Dr. Chan treats.

CMS data shows 4,182 Medicare services from Dr. Chan across 32 procedure codes in 2024, for 1,024 Medicare patients. Medicare paid $419,107 for them.

CMS counts 1,024 Medicare patients who saw Dr. Chan in 2024. The largest group is 65 to 74, with 448 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 41% are also on Medicaid. Their average risk score is 2.15, 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. Chan's median patient age at 69, with 50% women.

In 2024, Dr. Chan wrote 12,846 Medicare Part D claims for 1,311 patients. 82% of them were for generic drugs. CMS names the drug for 12,555 of them, across 53 drugs with 11 or more claims each, at $1,459,640 in total drug cost. In 2023, CMS named 10,981 claims across 53 drugs.

Dr. Chan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chan as offering telehealth. CMS counts 13 procedures of leg revascularization (restoring blood flow) by Dr. Chan, more than 68% of the clinicians it reports for that procedure.

CMS Open Payments shows 1,066 general payments to Dr. Chan from 51 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 55% of the total. Edwards Lifesciences Corporation paid the most, $43,244.

Dr. Chan graduated from LECOM at Seton Hill - Greensburg in 2007. Dr. Chan is a member of ACC and AOA.

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