Penelope A. Ewbank, MD, Stephen J. Smart, MD, FACP


Welcome to Allergy and Asthma of Illinois. We are a state-of-the-art diagnostic and treatment facility located in central Illinois. With our main office in Peoria, as well as 3 conveniently located satellite offices, we are able to offer patients young and old, the services they need to breathe easy.


It is important to see an allergy specialist if you or your child has:

  • • a chronic cough
  • • a history of wheezing or other breathing difficulties
  • • been diagnosed with asthma requiring routine or frequent medicines
  • • been to the ER or hospitalized for possible asthma
  • • nasal congestion or drainage that needs frequent medication
  • • persistent or frequent eczema / atopic dermatitis
  • • a systemic reaction to stinging insects
  • • recurrent infections
  • • food allergy
  • • hives


We welcome the opportunity to meet with you, your child, or other loved one to diagnose and treat your problem. Don’t let asthma or an allergy limit the quality of your life!


Our Main Office is located at:

6615 N. Big Hollow Rd.,

Peoria, IL 61615


Office Hours:

Monday:  9:00 am – 5:00 pm
Tuesday:  9:00 am – 5:00 pm
Wednesday:  9:00 am – 5:00 pm
Thursday:  Peoria office closed
Friday:  9:00 am – 5:00 pm
Saturday & Sunday:  CLOSED


Call today for an appointment!




Peoria Office
6615 N. Big Hollow Road
Peoria, Illinois 61615
Fax: 309-691-5201



Princeton Office
Perry Memorial Hospital
530 Park Avenue East, Suite 409
Princeton, Illinois


Macomb Office
Medical Arts Building
527 E. Grant Street
Macomb, Illinois

Pekin Office
2355 Broadway
Pekin, Illinois
(not pictured)