Westerville 430 Altair Parkway Westerville, Ohio 43082 Ohio Gastro Office Suite 110 Doctor Appointments, Office Visits, & Hemorrhoid Banding Central Ohio Endo. Center Suite 120 Procedures (eg. colonoscopy, endoscopy) Main: 614-754-5500 Billing: 614-457-4220 Medical Records: 614-754-5455 Open PDF Directions Medical Team at Westerville Scott Arlin, MD John Castor, MD Brian Dinh, MD Laura Golian, MD Rohit Makkar, MD Gregory Meis, DO David Sabol, MD Leena Tarigopula, MD Alok Tripathi, MD John Ward, MD Sara Doran, APRN, CNP Megan Jarrells, CNP