About Zilkha Radiology. Zilkha Radiology is a group practice with 2 locations. Currently, Zilkha Radiology specializes in Diagnostic Radiology, Internal Medicine, Neuroradiology and Radiology with 7 physicians. Zilkha Radiology Office Locations. Zilkha Radiology. 369 E Main St Ste 18 East Islip, NY 11730 (631) 277-4500. Monday : 7:00 AM - 10:00 ....