Product Placement Blog ➞ Gossip Girl TV ShowMount Sinai Health System Health Care Operation Company in Gossip Girl S01E10 “Final Cancellation” (2021)December 2, 2021 Sergey TV Show Hi! On Thursday, December 2, I analyzed a TV Show and product placement was spotted: Mount Sinai Health System Health Care Operation Company in Gossip Girl S01E10 “Final Cancellation” (2021).Here are 1 image(s) below: