Size of a quarter. Arghhh. I need to have it "filled" or it will grow.

Ideas on where to do that, NYC area?

 

If you call your insurance agency, they could probably refer to you a reputable glass repair service. Some come to your home or business to fix your crack.

A quarter-sized crack may not be repairable. If it were smaller, then I would have suggested to use a glass-repair kit which you can buy at Kragens or NAPA.