Dr. Lisa Toshiyetan Ryujin, MD is a health care provider primarily located in Vacaville, CA, with other offices in Fairfield, CA and Vallejo, CA (and 2 other locations). She has 17 years of experience. Her specialties include Obstetrics & Gynecology. Dr. Ryujin is affiliated with Kaiser Permanente Medical Center Vacaville. She speaks English and Spanish.