Mark Lipowicz

I did not know Aaron (Dr. Lazar) but he seems to have been a great guy. 

Naperville paper ran a feature in 2019 on his struggle with brain cancer and how much he gave to the community (link might be for subscribers only). He lived on for three years to 2022

 https://www.chicagotribune.com/2019/04/26/decent-naperville-doctor-used-to-caring-for-others-puts-his-faith-in-god-as-he-fights-brain-cancer/