Dr. David Deguire Chan, DO

Dr. Chan practices at Orange Coast Medical Center in Fountain Valley, California, part of MemorialCare Health System.

Dr. Chan's NPI, 1497068688, was assigned on July 16, 2010. Dr. Chan graduated from WesternU College of Osteopathic Medicine of the Pacific in 2010. Dr. Chan holds California license 20A13372.

Dr. Chan's primary practice is Orange Coast Medical Center, at 9920 Talbert Avenue, Fountain Valley, CA 92708 in Orange County. The practice phone is (714) 378-7000.

Dr. Chan's primary practice is Orange Coast Medical Center in Fountain Valley, California, part of MemorialCare Health System. Dr. Chan is also affiliated with UCI Health - Orange. The medical group on file is Optum - Downtown Los Angeles. Dmand AI also links Dr. Chan to 3 more skilled nursing facilities, 2 medical groups, 1 group practice or clinic 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. Chan practices, 7 sites in all. Vendor and product names are available with a free account.

Hospitalist is Dr. Chan's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Chan is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Chan's licenses on file in 3 states: California, Washington and Illinois.

Dmand AI lists acute diabetes, acute respiratory failure, anemia, bile duct problems, cardiac arrhythmia, chest pain, congestive heart failure and gastrointestinal bleeding among the conditions Dr. Chan treats.

CMS data shows 1,697 Medicare services from Dr. Chan across 7 procedure codes in 2024, for 425 Medicare patients. Medicare paid $188,104 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 425 Medicare patients who saw Dr. Chan in 2024. The largest group is 75 to 84, with 173 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 88% are also on Medicaid. Their average risk score is 2.53, 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 1,132 Medicare Part D claims for 237 patients. 85% of them were for generic drugs. CMS names the drug for 698 of them, across 28 drugs with 11 or more claims each, at $25,650 in total drug cost. In 2023, CMS named 982 claims across 37 drugs.

Dr. Chan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

CMS Open Payments shows 6 general payments to Dr. Chan from 4 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $42.

Dr. Chan graduated from WesternU College of Osteopathic Medicine of the Pacific in 2010.

Dr. Chan is in network with 14 carriers, including United Healthcare, Blue Cross Blue Shield of Michigan and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.