Featured Falls Church Allergists

Learn more about the medical training and expertise of allergists in Falls Church Virginia. Select from the list of allergists below.

Dr. John Simpson, MD

Physician
Allergy
Falls Church, Virginia

Expert Tips & Wisdom

Oral Food Challenge - Diagnosing Food Allergies

by John Simpson, MD

Challenge testing is when an allergen is given to a patient in small doses under medical supervision to see if there is an allergic reaction. This test is commonly done to diagnose food and drug aller... More...