Adrian G. Letz, MD


Allergy & Immunology
  • Board Certified

Call 563-557-3980

Accepting new patients.

Dr. Adrian Letz enjoys the detective work involved in achieving relief from allergy and asthma, as well as the complexity of the immune system. In his free time, Dr. Letz enjoys swimming, playing the French horn, amateur classical piano, and studying the Romanian language.

Contact Information

  • Office: 563-557-3980
  • Fax: 563-557-5562

Hours of Operation

Sunday: Closed
Monday: 8:30 AM - 6:00 PM
Tuesday: 8:30 AM - 5:00 PM
Wednesday: 8:30 AM - 5:00 PM
Thursday: 8:30 AM - 5:00 PM
Friday: Closed
Saturday: Closed







Areas of Interest

Allergies, Asthma, Food Allergy, Hives, and Immune Deficiencies.


Year began practicing: 2005

Year joined staff: 2016

Medical School

University of Texas Southwestern at Dallas


Internal Medicine, Wilford Hall Medical Center, Lackland AFB, San Antonio, TX


Allergy & Immunology, Wilford Hall Medical Center, Lackland AFB, San Antonio, TX

Graduate Education

MBA- University of Texas at San Antonio

Board Certification

Internal Medicine, Allergy/Immunology

Professional Memberships

  • Fellow, American Academy of Allergy, Asthma, and Immunology
  • Fellow, American College of Allergy, Asthma and Immunology
  • Fellow, American College of Physicians
  • Dubuque County Medical Society
  • European Academy of Allergy and Clinical Immunology
  • Iowa Society of Allergy, Asthma, and Immunology


Letz AG, Calabria CW. T-cell epitopes of aeroallergens. Ann Allergy Asthma Immunol 2009;102:445-452.

Letz AG, Tankersley MS, Dice JP, England RW. Monitoring bacteriostasis in allergen extract mixing: 10 years of culture data. J Allergy Clin Immunol 2009;123:1175-1176.

Letz AG, Quinn JM. Frequency of imported fire ant stings in patients receiving immunotherapy. Ann Allergy Asthma Immunol 2009;102:303-307.

Letz AG, McFarland RW, Dice JP. Delay of chemotherapy to prevent progressive vaccinia. Military Medicine 2006;171:788-789.

Letz AG, Quinn JM. Relationship of basic military trainee emergency department visits for asthma and San Antonio air quality. Allergy Asthma Proc 2005;26:463-467.

Letz AG. The symbol of modern medicine. Ann Intern Med 2004;140:309-310.[Correspondence]