All-American Allergy, Asthma and Immunology Center Logo
All-American Allergy, Asthma and Immunology Center Logo

Let's Breathe America!

Custom Allergy Immunology Care for You and Your Family

We Treat: Sinus Problems Stinging Insect Allergy Skin Disorders Food Allergy Eosinophilic Esophagitis Breathing Disorders Drug Allergy Pet Allergy Immunological Disorders Vaccines

We Are Accepting New Patients Of All Ages!

We personalize our allergy-immunology care to suit the desires and goals of pediatric and adult patients using an array of diagnostic and treatment approaches.

Pulmonologist Doing Skin Allergy Test on Little Boy

Testing Offered:

mixed race girl holding pill and glass of fresh water

Therapies Offered:

Allergy Clinic in San Antonio, TX

Meet the Doctor

Dr. Charles Calais, DO, MS, FACP, FAAAAI, FACAAI

Dr. Charles Calais is currently board-certified by the American Board of Allergy & Immunology (ABAI). He is also board-certified in internal medicine by the American Board of Internal Medicine (ABIM). Dr. Calais received a Bachelor of Science degree from Fayetteville State University and a Master’s degree in Health Services Administration from Central Michigan University. He received his medical degree from Philadelphia College of Osteopathic Medicine. Thereafter, he went on to complete his internship and residency at BAMC. He later completed his fellowship in Allergy and Immunology at the National Capital Consortium in Bethesda, MD. He retired from active duty in the US Army Medical Corps with over 27 years of honorable service. He served as Chief of Allergy Services at Carl R. Darnall Army Medical Center, Bayne-Jones Army Community Hospital, Irwin Community Hospital and Brooke Army Medical Center. He also served in 3 military deployments in support of military operations in Thailand, Bosnia-Herzegovina and the Middle East. Dr. Calais is a Distinguished Member of the United States Army Medical Department Regiment and a member of the Order of Military Medical Regiment. 

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