Dr. Sean Darcy, MD Dr Sean Darcy provides multiple medical services including medical marijuana cards, medical marijuana evaluations, cannabis cultivation licenses and emotional support animal evaluations. He also specializes in sex medicine assisting many patients with sexually transmitted diseases and erectile dysfunction. He started his medical training during his undergraduate years at Stanford. He graduated in 2002 with departmental honors in Human Biology. After Stanford, Dr. Sean Darcy MD was accepted to UCLA's now named David Geffen School of Medicine.