National Grand Rounds - June 2026

Dr. Nicholas Nacca is the director of Medical Toxicology and Medical Toxicology Fellowship Director at the University of Rochester Medical Center. In addition to being faculty member in the Department of Emergency Medicine he holds a secondary appointment in the Department of Environmental Medicine. His primary role is staffing the educational and clinical medical toxicology consultation service, with educational responsibilities to medical toxicology fellows, multidisciplinary teams of medical residents, pharmacy residents and students, as well as medical students. He staffs and directs a referral based outpatient Medical Toxicology Clinic.

Dr. Keahi Horowitz is an Emergency Medicine physician with a clinical focus in Medical Toxicology, serving as an Adjunct Assistant Professor in the School of Medicine. He earned his medical degree from the University of Hawaii, John A. Burns School of Medicine in 2019 and completed his Emergency Medicine residency at Stony Brook University in New York in 2022. Dr. Horowitz practices at the Oregon Poison Center, where he evaluates and manages a wide range of toxicologic emergencies and contributes to education and training in medical toxicology.

Ran is trained in Emergency Medicine and Critical Care Medicine. He practices in Oregon Health & Science University in the Emergency Department, Medical ICU, Cardiovascular ICU, Trauma ICU, ECMO, and Transport ECMO teams. He is also the program director for Critical Care Medicine Fellowship at OHSU. 

Rudi completed training in both Emergency Medicine at the University of Wisconsin and Critical Care Medicine at Oregon Health & Science University. She currently attends the University of Washington Medical Center in the emergency department and Cardiothoracic ICU.