The "Chicago Fire" actor was engaged to Gaga for 18 months until their July split.
Kinney's new girlfriend DiGiovanni is a former Atlantic City bottle-service waitress who now works in radiology at Thomas Jefferson University Hospital.
Kinney and DiGiovanni recently visited Austin, Texas, together to attend the Formula One race and Taylor Swift concert, and DiGiovanni has visited him in Chicago, where he shoots the NBC show, reported New York Post.
"Alanna is head over heels. He is told her he is planning to visit her in Philly; maybe as soon as this weekend," a source said.