Dr. Marshall S. Horwitz graduated from the University of Washington SOM in 1990. He works in Seattle, WA and specializes in Internal Medicine and Medical Genetics. Dr. Horwitz is affiliated with University Of Washington Medical Center and Seattle Childrens Hospital.
Years in Practice: 25 Years
Languages Spoken: English
Medical School: University of Washington SOM
Graduation Date: 1990
Specialties: Internal Medicine, Medical Genetics