Dr. Viktor E. Eysselein, MD

Dr. Eysselein practices at Harbor-UCLA Medical Center in Torrance, California, part of County of Los Angeles.

Dr. Eysselein's NPI, 1609848191, was assigned on February 7, 2006. Dr. Eysselein graduated from Other in 1986. Dr. Eysselein holds California license A48752.

Dr. Eysselein's primary practice is Harbor-UCLA Medical Center, at 1000 W Carson St, Torrance, CA 90509 in Los Angeles County. The practice phone is (310) 222-2345.

Dr. Eysselein's primary practice is Harbor-UCLA Medical Center in Torrance, California, part of County of Los Angeles. Dr. Eysselein is also affiliated with Torrance Memorial Medical Center. The medical group on file is Harbor-UCLA Medical Center. Dmand AI also links Dr. Eysselein 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. Eysselein practices, 4 sites in all. Vendor and product names are available with a free account.

Gastroenterology is Dr. Eysselein's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Eysselein is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Eysselein is licensed in California.

Dmand AI lists acid reflux, chronic inflammatory bowel disease (IBD), colonoscopy, intestinal diverticulosis and upper GI endoscopy among the conditions Dr. Eysselein treats.

CMS data shows 50 Medicare services from Dr. Eysselein across 2 procedure codes in 2024, for 41 Medicare patients. Medicare paid $6,896 for them. Every service was in an office.

CMS counts 41 Medicare patients who saw Dr. Eysselein in 2026. The largest group is 65 to 74, with 17 patients. 75% of them have high cholesterol, and 73% have high blood pressure. Their average risk score is 1.26, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Eysselein's median patient age at 63, with 56% women.

In 2026, Dr. Eysselein wrote 89 Medicare Part D claims for 23 patients. 91% of them were for generic drugs. CMS names the drug for 32 of them, across 2 drugs with 11 or more claims each, at $868 in total drug cost. In 2023, CMS named 54 claims across 3 drugs.

Dr. Eysselein accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 25 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Eysselein, more than 53% of the clinicians it reports for that procedure.

Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)

Dmand AI links 110 papers to Dr. Eysselein, published from 2003 to 2024. 2011 was the busiest year, with 2. The most frequent topics are Intestinal Mucosa, Dogs and Radioimmunoassay. Dr. Eysselein has published most often in Am J Physiol. Dr. Eysselein's most frequent co-authors are Sofiya Reicher, MD, Linda Ann Hou, MD and Lawrence Chihyung Ku, MD.

CMS Open Payments shows 223 general payments to Dr. Eysselein from 15 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 38% of the total. Boston Scientific Corporation paid the most, $7,396.

Dmand AI lists 3 awards for Dr. Eysselein, most recently Top Doctors:LA Area in 2013.

Dr. Eysselein graduated from Other in 1986. Dr. Eysselein is a member of ACG.

Dr. Eysselein is in network with 17 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.