Emergency Room - Mercy Gilbert Medical Center is an emergency room that offers many services, including an accredited chest pain center, designated cardiac arrest center, and a primary stroke center. Visit Emergency Room - Mercy Gilbert Medical Center located at 3555 S Val Vista Dr, Gilbert, AZ. This Gilbert emergency room is one of the best in Arizona. As part of the Dignity Health network, Emergency Room - Mercy Gilbert Medical Center is dedicated to delivering high quality, compassionate care and access to Gilbert and nearby communities.