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Happy Holidays – following are our holiday hours:
CLOSED - Friday, December 24, 2021
CLOSED - Saturday, December 25, 2021

Happy New Year:
OPEN: Friday, December 31, 2021  -   10:00 am – 1:00 pm
CLOSED: Saturday, January 1, 2022

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Oak Brook Allergists
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    • Downers Grove: (630) 789-0575
    • Elmhurst: (630) 574-0460
    • Naperville: (630) 961-2960
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    • David J. Knysak, MD
    • Raymond M. Pongonis Jr., MD
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  • Our Team
    • Zachary E. Rubin, MD
    • David J. Knysak, MD
    • Raymond M. Pongonis Jr., MD
    • Jennifer Catalfio, PA-C
    • Tammy Laas, APRN-CNP
  • Contact & Locations
    • Downers Grove
    • Elmhurst
    • Naperville
    • Plainfield
  • Request an Appointment
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  • Conditions & Treatments
    • Allergic Rhinitis (Hay Fever)
    • Asthma
    • Chronic Sinusitis
    • Eczema & Hives
    • Food Allergies
    • Pet Allergies
    • Stinging Insect Allergies
    • Oral Immunotherapy
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Oak Brook Allergists Blog

Learn about the latest advances in allergy and asthma treatments, plus news about our practice.

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Patient Education

Explore allergy and asthma conditions and treatments in our patient education center.

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Oak Brooks Allergists

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  • For Kids
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  • Patient Education
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At Oak Brook Allergists, our asthma and allergy specialists offer comprehensive care for Allergic Rhinitis (Hay Fever), Asthma, Chronic Sinusitis, Eczema & Hives, Food Allergies, Pet Allergies, and Stinging Insect Allergies.