Office Consultation vs Endoscopy Procedure OFFICE CONSULTATION - REFERRAL Many of our new patients are referred to us by their primary care physicians for a comprehensive office consultation and evaluation. ENDOSCOPY - REFERRAL Your primary care physician may refer you to us for an endoscopic procedure, including: Colonoscopy Gastroscopy Sigmoidoscopy ERCP Esophageal studies Endoscopic Ultrasound Other specialized procedure