I know of two:
Smile, off Exit 256, Route 93 near Hazleton. When you get off the exit, turn toward the city. You have to travel a few miles to find Smile, which is in a small strip shopping center on your right. The mainstays there are Tina and Yung. I like them both, but they are older and neither are great beauties. Sometimes they have a third girl who is younger.
Smile Salon Exit 210A in Lewisburg. This one is also on your right as you leave I-80 and head toward Lewisburg. It is in a strip shopping center on the level above the Wal-Mart. It gets good reviews, but I have never been there. This one is also a little closer to I-80 than the one in Hazleton.
Good hunting.