I am sorry that your husband was diagnosed. However you are fortunate that you live close to excellent doctors in Philly, and not too far from NYC and Baltimore.
Also fortunate in this was caught when it was.
It is a life changing event. It was for me. However I am 3 years past surgery and doing fine. There is no need to panic but you want to move will all deliberate speed to take this taken care of.
You got some excellent recommendations. I grew up outside Philly myself but now live in California. My advice would be to research the docs and pick the one that you think is the best. Hard to tell I know but at least you will know you are doing all you can.
Good Luck to your husband and to you.