Dr. Patrick J. Brennan

Peter Janu, MD, is an independent surgeon with a special interest in heartburn and reflux disease, as well as laparoscopic techniques, peripheral vascular diseases, nutritional support and hernia surgery. Dr. Janu developed national recognition for minimally invasive procedures for the treatment of heartburn and reflux, and serves as the region's Director of the Reflux Center of Excellence. Dr. Janu is highly rated in 11 conditions, according to our data. His clinical expertise encompasses Hiatal Hernia, Gastroesophageal Reflux Disease (GERD), Hernia, Endoscopy, and Gastrectomy. Dr. Janu is board certified in The American Board Of Surgery - General Surgery and American Board Of Surgery (2000). Dr. Janu is currently accepting new patients.

To create your best possible surgical experience, I work to deliver expert, individualized care. I have broad experience with general surgical disease including minimally invasive surgical approaches to reduce discomfort and recovery times, as well as a specialty focus on the management of disorders of the thyroid, parathyroid, and adrenal glands. It is a great privilege to support patients throughout their medical journey—from preoperative visits to recovery—and assist them with any complex decisionmaking along the way. Dr. Mitchell is highly rated in 15 conditions, according to our data. Her clinical expertise encompasses Hyperparathyroidism, Neonatal Severe Hyperparathyroidism, Familial Isolated Hyperparathyroidism, Parathyroidectomy, and Thyroidectomy. Dr. Mitchell is board certified in American Board Of Surgery (2018). Dr. Mitchell is currently accepting new patients.

Dr. Tretinyak says, “There’s no better feeling than reuniting with a patient years after a surgery and seeing him or her functioning well and living a full life.” Dr. Tretinyak is an experienced vascular, endovascular and general surgeon. He specializes in treating aneurysms, peripheral arterial disease and vein problems. The first step to a successful procedure? Education. He believes in a downtoearth approach and thoroughly explains the condition and how it will be treated. It also means having someone who is there to talk through questions or worries. Board certified and also registered in vascular ultrasound, Dr. Tretinyak graduated with a bachelor’s degree from the University of St. Thomas. He earned his medical degree at the University of Minnesota, where he also pursued his residency training in general surgery. He completed a vascular surgery fellowship at the University of Chicago. When he’s not working, Dr. Tretinyak likes to keep active through sports and spending time with his family. Dr. Tretinyak is highly rated in 22 conditions, according to our data. His clinical expertise encompasses Gangrene, Arterial Insufficiency, Peripheral Artery Disease, Varicose Veins, and Carotid Artery Surgery. Dr. Tretinyak is board certified in Vascular Surgery, American Board Of Surgery (2007) and American Board Of Surgery (2004). Dr. Tretinyak is currently accepting new patients.