Dr. Sang Hoon H. Ahn, MD

Dr. Ahn practices at Virgil Endoscopy Center in Los Angeles, California.

Dr. Ahn's NPI, 1568581759, was assigned on March 28, 2007. Dr. Ahn graduated from Seoul National University College of Medicine in 1994. Dr. Ahn's California license number on file is A95562.

Dr. Ahn's primary practice is Virgil Endoscopy Center, at 500 South Virgil Avenue, Suite 301, Los Angeles, CA 90020. The practice phone is (213) 738-6090.

Dr. Ahn's primary practice is Virgil Endoscopy Center in Los Angeles, California. Dr. Ahn is also affiliated with Keck Hospital of USC. The medical group on file is USC Care Medical Group. Dmand AI also links Dr. Ahn to 1 more hospital, 2 physician offices, 2 home health agencies, 1 group practice or clinic and 1 other site, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ahn practices, 9 sites in all. Vendor and product names are available with a free account.

Hematology and oncology is Dr. Ahn's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Ahn is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Ahn's licenses on file in 2 states: California and Arizona.

Dmand AI lists breast cancer, chronic anemia, chronic leukemia, colorectal cancer, deep vein thrombosis (DVT), fluid and electrolyte imbalances, lung cancer and lymphoma among the conditions Dr. Ahn treats.

CMS data shows 1,309 Medicare services from Dr. Ahn across 7 procedure codes in 2024, for 512 Medicare patients. Medicare paid $84,110 for them. Every service was in an office.

CMS counts 512 Medicare patients who saw Dr. Ahn in 2024. The largest group is 75 to 84, with 221 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 76% are also on Medicaid. Their average risk score is 2.20, 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. Ahn's median patient age at 75, with 60% women.

In 2024, Dr. Ahn wrote 1,278 Medicare Part D claims for 213 patients. 50% of them were for generic drugs. CMS names the drug for 989 of them, across 29 drugs with 11 or more claims each, at $7,077,660 in total drug cost. In 2023, CMS named 1,048 claims across 34 drugs.

Dr. Ahn accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Ahn as offering telehealth.

Dmand AI links 3 papers to Dr. Ahn in 2016. Dr. Ahn's most frequent co-authors are Diana Marina Brainard, MD, Moon Y. Kim, MD and Susan Jane Knox, MD, PhD.

Dmand AI links Dr. Ahn to 8 clinical trials, 3 of them phase 4 studies. 1 is still active or recruiting. Conditions studied include Hepatitis B, Chronic, Hepadnaviridae Infections and Hepatitis C, Chronic. Yonsei University sponsors the most, 6.

CMS Open Payments shows 495 general payments to Dr. Ahn from 39 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 51% of the total. Eisai Inc. paid the most, $4,495.

Dmand AI lists 1 award for Dr. Ahn, most recently CMS Stage 1 EHR in 2011.

Dr. Ahn graduated from Seoul National University College of Medicine in 1994. Dr. Ahn is a member of ASCO.

Dr. Ahn is in network with 13 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.