As leaders in their field, Drs. Windom, Ly, and Fergeson specialize in treatment of allergy, food allergies, asthma, and sinus problems. Windom Allergy patients receive the best care available through comprehensive evaluations, state-of-the-art testing methods, and cutting-edge treatments. Along with unparalleled care and opportunities to participate in clinical research trials, we offer flexibility for your busy schedule with early morning appointments at 7:30 am on Thursdays and late afternoon visits until 6:00 pm on Tuesdays.