Mary E. MacGuire, MD, FACS, specializes in general surgery, critical care and endoscopy. Located in Casper, WY, Dr. MacGuire is a board-certified surgeon with over 20 years of surgical experience.Her expertise is in general surgery with special focus in -* Laparoscopic and gastrointestinal surgery* Laparoscopic and endoscopic treatment for esophageal reflux disease* Treatment of breast diseases* Thyroidectomy and Parathyroidectomy* Colonoscopy and GI procedures* Hernias* Acid refluxCall Dr. MacGuire's office today to schedule an appointment.