We’re here to help you breathe easier at any one of our six convenient locations, with expanded office hours that fit your work schedule and busy lifestyle. Our physicians are also highly accessible; chances are we will get you in for an appointment, even at the last minute. Our new mobile site provides Click to Call appointments, Google Map office locations and a Pollen Count App that allows you to track pollen conditions in real time. Contact us today to schedule a visit with one of our adult or pediatric allergy specialists for a complete evaluation. We will recommend the best method of treatment to minimize your symptoms, allow you to feel well, be active and live a healthy, productive life.

Please visit on your mobile phone to take advantage of our mobile-friendly features.


You can breathe easier knowing our board certified allergists, registered nurses, and nurse practitioner have been providing relief for allergy and asthma sufferers for over 35 years. We provide the finest in allergy care with a goal of improving our patients’ quality of life.

• Chronic sinus conditions
• Stinging insect allergies
• Eczema
• Evaluation of food allergies

• Hives




Dr. Knysak, one of our allergy doctors in Oak Brook, IL
Dr. Nasir, one of our allergy doctors in Oak Brook, IL

Our specialties include:
• Allergic rhinitis

• Pediatric allergy services

• Evaluation of asthmatic

• Immunologic workups



Oak Brook Allergists in Oak Brook, Naperville, Plainfield, Darien and Wheaton, IL, Illinois

We know how busy you are, so we've added more office locations to fit your lifestyle. If you live in the Oak Brook, Naperville, Wheaton, Darien or Plainfield, IL area chances are there is an Oak Brook Allergists office on your way to work or on the way home from school. We want to make it easier for you to receive the allergy and asthma care you need. Check out our Google Map on your mobile phone to find out which Oak Brook Allergist office is closest to you, office hours, and the shortest route.