Mercy Medical Group - Cardiac Surgery is a cardiology center that offers many services, including cardiac surgery, electrocardiograms (ekg), and cardiovascular surgery. Visit Mercy Medical Group - Cardiac Surgery located at 3941 J St, Sacramento, CA. This Sacramento cardiology center is one of the best in California. As part of the Dignity Health network, Mercy Medical Group - Cardiac Surgery is dedicated to delivering high quality, compassionate care and access to Sacramento and nearby communities.