Kate Walsh was on Grey's Anatomy.
Dr. Addison Adrianne Forbes Montgomery -LRB- formerly Shepherd -RRB- is a fictional character on the ABC television series Grey 's Anatomy and Private Practice played by Kate Walsh .. Private Practice. Private Practice ( TV series ). Kate Walsh. Kate Walsh ( actress ). fictional character. fictional character. ABC. American Broadcasting Company. Addison is a world-class neonatal surgeon with board certifications in both Obstetrics and Gynaecology and Maternal and Fetal Medicine .. Fetal. Fetal surgery. neonatal surgeon. Neonatology. neonatal. neonatology. surgeon. surgery. Obstetrics and Gynaecology. Obstetrics and Gynaecology. Maternal and Fetal Medicine. maternal-fetal medicine. Additionally , she is a medical genetics fellow .. medical genetics. medical genetics. fellow. fellowship ( medicine ). She works at the Oceanside Wellness Group , a fictional practice located in Santa Monica , California .. practice. medical practice