Also, with Dr. S.
If you let his office know you're early on, and are looking if possible for a cancellation, they'll usually try to work that out for you, if they can!
Are you near the Philly area? (I see Dr Knobler, in Ft. Washington, who used to be Dr. S's partner. They are good friends.)
I'm not suggesting one over the other, I"m sure you waited for Dr. S for a while. But, if you're close to the area, Dr Knobler is surely as excellent choice.
I've been with them both since 89 or so..(rsd memory)...

Wishin' and hopin' for the best!

pete