Dr. Rana H. Mahmood is very professional, down to earth, and very knowledgeable about exactly what I have going on. .. which is obstructive sleep apnea with daytime tiredness. I have been a patient of his for well over a year and I couldn't be happier than if I was being seen by any other Board Certified Neurologist anywhere else! I only have one negative experience with Dr. Mahmood, his very competent staff of nurses, and his extremely personable office ladies... that negative experience is because I moved out of Illinois and now have different insurance coverage. But, honestly, if I can not find a comparable replacement for him here in Wisconsin... then I will gladly pay his fee to monitor my CPAP machine and medication!! If any of you reading this have a sleep disorder or difficulties stay alert and attentive during the daytime. I HIGHLY RECOMMEND Dr. Rana H. Mahmood and his truly EXCELLENT staff (Nurses & Office... ESPECIALLY, Lacy in the office!!! She has the sweetest personality and is always a joy to speak with.) I plan on staying in contact with them, just to check in with them, from time to time. Thank you so very much ladies and of course Dr. Mahmood!!! I totally appreciate ALL that you have done to help me manage my nights and days, BOTH!!! Sincerely, D. Langert Forever in your debt...

I love this doctor. He listens and cares deeply for his patients. Staff is incredible also.

He is a great doctor and helpful person. He is very honest and takes his time to listen to his patients. He has a good rapport with his staff and seems like he enjoys his job.