Dr. Peter Janu

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, Osteitis Fibrosa, Parathyroidectomy, and Thyroidectomy. Dr. Mitchell is board certified in American Board Of Surgery (2018).

David Phillips is a General Surgeon practicing medicine in Appleton, Wisconsin. Dr. Phillips is highly rated in 14 conditions, according to our data. His clinical expertise encompasses Ogilvie Syndrome, Diverticular Disease, Gallbladder Disease, Endoscopy, and Lymphadenectomy.

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 American Board Of Surgery (2004) and Vascular Surgery, American Board Of Surgery (2007).