Dr. Rulyak specializes in the evaluation and management of gastrointestinal and liver diseases. He performs diagnostic and therapeutic endoscopic procedures including upper endoscopy and colonoscopy. He has interest in GI oncology and performs endoscopic ultrasound. Dr. Rulyak specializes in evaluation and management of gastrointestinal and liver diseases. He performs diagnostic and therapeutic endoscopic procedures. He has interest in gastrointestinal oncology, endoscopic ultrasound and inflammatory bowel diseases.