Worst Doctor for helpfulness and worse staff, not helpful or friendly, prescription out of stock, pharmacy willing to speak to Doctor to find alternative, but doctor nor front office would call, so they said I should call around find a place that ahs it in stock, and if not get a list of what they do have and fax that to Doctor!!! No pharmacy can do this as they have no idea of what class or alternatives the doctor would consider, absolutely useless, Doctor unwilling to help by making 1 call, expects patient to make 30 calls instead

Submitted Feb. 16, 2024

I found him to be arrogant, judgmental , rude and very uncaring. Not a good match for us.

Submitted April 6, 2023

Incredibly lousy Psychiatrist. He breezes through patients like an assembling machine, and yes, he treats you and writes a prescription, but he's always in a hurry, and seems more interested in getting you out of the office after your 15 minute visit for his next appointment without allowing you to fully address all your concerns.
Dropped him after 6 months of not seeing improvement and because in his office you're $$$ and nothing more.

Submitted Sept. 13, 2017

I have been with Dr. Marks for almost 3 years. He is very helpful and informative. He actually listens to your concerns and acts accordingly. He seems like a VERY busy doctor and runs behind on his appointments some times. But that would not deter me as a patient.

Submitted Jan. 19, 2015

I've been a patient with Dr marks for half a a year and he's been very helpful with medication. Also if you have a question he's a very knowledgeable doctor. I would definitely recommend going to him. He is located in two places; because of his own practice but still accepts insurance. Neuropsych in Vernon Hills and a different one in Crystal Lake 815-477-4024

Submitted June 18, 2011

Very kind and knowledgeable. Also very informative on educational material. Learned more in 1 session with this physician than a year with another. So happy we switched to this physician. He's great!

Submitted March 5, 2009