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About Us

Black & Kletz Allergy (also known as Yuill Black, MD and Michael R. Kletz, MD, P.C.) is an Allergy and Immunology practice consisting of two board certified allergists, Michael R. Kletz, MD and Appaji Gondi, MD. We have three offices in the Washington, D.C metropolitan area with two offices located in Northern Virginia and one office in northwest Washington, D.C. Our practice has provided trusted adult and pediatric allergy, asthma, and immunology services to the greater Washington D.C. metropolitan area for over 50 years.


Our Doctors


Michael R. Kletz, MD: Allergist in Manassas, McLean, and Washington, DC

Michael R. Kletz, MD is board certified … Read More


Appaji Gondi, MD: Allergy Specialist In Manassas, McLean, and Washington, DC

Appaji Gondi, MD is board certified in Allergy and Immunology. He is also board … Read more

Board Certified Allergists

Please call us for an appointment!

We Accept Most Insurance Plans!