Would like to send a complementary letter to the Director of Glenbrook Hospital. Who is the Director and what would be the best way to send a letter? To what address?

Jesse Peterson Hall You could probably send them a letter using the main hospital address. They should route it to his office. Make sure it does not look like a business letter (could be intercepted). Personal looking is best - aka - hand written, etc. Here is his executive bio: https://www.northshore.org/about-us/organizational-profile/executive-bios/#Peterson

Yes!!!!!!!

I'm not sure I don't work there you might write to the broad of directors