Riverdale Endoscopy Welcome to Riverdale Endoscopy. Permit GA-031-312 Address 34 Upper Riverdale Road Suite 201B Riverdale, GA 30274 Phone & Fax 678.904.0094 Download Directions and Parking Information Providers at this location Ralph C. Lyons, MD Schedule an Appointment View Profile Keval A. Patel, MD Schedule an Appointment View Profile David Rabin, MD Schedule an Appointment View Profile Services at this location Colonoscopy Hemorrhoid Banding Upper GI Endoscopy (EGD)