Doctors join St. Luke's team Five new doctors have joined the St. Luke's health care team. Scott Mikesell, DO, is now a member of St. Luke's Cardiology Associates. Jeffrey Speer, MD, is a member of St. Luke's Anesthesia Associates. And Brad Irwin, MD, Max Miranda, MD, recent... Written By: news@superiortelegram.com | 7:00 am, Oct. 15, 2010 Five new doctors have joined the St. Luke's health care team. Scott Mikesell, DO, is now a member of St. Luke's Cardiology Associates. Jeffrey Speer, MD, is a member of St. Luke's Anesthesia Associates. And Brad Irwin, MD, Max Miranda, MD, recently joined Drs. Waldo Avello and Aga Bednarz at St. Luke's Gastroenterology Associates, and Brigid Pajunen, MD, recently joined P.S. Rudie Medical Clinic, one of St. Luke's family medicine clinics, located at 26 E. Superior St., Duluth.