Michigan cholecystectomy expert witnesses review gallbladder surgery care and opine on clinical decision-making and technical performance. They are often general surgeons, hepatobiliary specialists, and gastroenterologists with experience in laparoscopic and robotic approaches. Many practice in Michigan’s academic centers like Michigan Medicine or Henry Ford Health, reflecting statewide referral patterns. They evaluate indications, imaging, bile duct injury prevention, informed consent, and postoperative complications.