Sarasota Center for Digestive Disease. Phone: (941) 952-9223. Request Appointment. Directions. All patients of Dr. Loewe, Dr. Southerland and Dr. Schwimmer will be seen at the new address: 3325 S Tamiami Trail #200, Sarasota, FL 34239. Same doctors, same great care. 5 minutes from current location. 2nd floor of the endoscopy building where Dr ....