Dr. Petrossian (or staff) is conversant in Spanish and Armenian. Dr. Petrossian's clinical interests include hemifacial spasm, tremors, and blepharospasm. She is affiliated with Providence Medical Institute and Providence Saint John's Health Center. She graduated from the University of California, San Francisco (UCSF), School of Medicine and then she performed her residency at Brigham and Women's Hospital. She is an in-network provider for Anthem, Blue Cross/Blue Shield, and Coventry, as well as other insurance carriers. Dr. Petrossian has an open panel.