"Our Doctors are Board Certified in Allergy and Immunology" To earn this certification and be recognized by the American Board of Medical Specialties, it is necessary to be first Board Certified in Pediatrics or Internal Medicine. Then complete a Fellowship in Allergy and Immunology and pass a rigorous examination. Our doctors must recertify every 10 years.


Maria "Gigi" Sabio, MD is a Board Certified Allergy and Asthma specialist. She is a graduate of the University of Missouri-Kansas City School of Medicine, 6-year program. She completed her residency in Internal Medicine at Washington University/ Jewish Hospital of St. Louis where she found her true vocation: a career in allergy and asthma care. She completed her allergy fellowship with training in both adult and pediatric care at Washington University/ Barnes Hospital, where she continues to be involved with the University serving as a Clinical Instructor in Medicine. She is a member of the American College of Allergy, Asthma and Immunology.

"At our practice, we care for individuals with allergic conditions and asthma, which often are chronic conditions. For this reason, we strive to help our patients to fully understand the nature of their allergies and asthma so that we are, in essence, a catalyst to allow them to care for themselves with expert medical guidance. We use our experience and training to educate them on the patterns and complex symptoms of these conditions so that, together, we can make decisions on the optimal treatment to realize the goals of achieving a healthy quality of life. So much of medical care is aimed at prevention. We make it our responsibility to empower our patients with the knowledge to take charge of their allergies and asthma and we make it our duty to keep up with state of the art care by constant education of ourselves and our staff. We strive to achieve the rigorous standards of certification in our field of study and bring that knowledge to the care of our patients. We are an independently owned specialty practice where care is tailored to the patient, and is still customizable and personal."

Ernesto Ruiz-Huidobro M.D., is a Board Certified Allergy and Asthma specialist. He completed his Pediatric residency at Loyola University Chicago in 1996. He completed fellowships in Pediatric Allergy-Immunology at Baylor College of Medicine in Houston and Adult Allergy at University of Texas-Southwestern Medical Center in Dallas. After completing his specialty training he was a staff physician in the St. Louis University Network for 3 years before joining Allergy and Asthma Healthcare in 2001. He is a member of the American College and American Academy of Allergy, Asthma and Immunology. Dr. Ruiz is currently an Assistant Clinical Professor at St. Louis University and enjoys taking care of patients of all ages. His particular interests are pediatric asthma and rhinitis problems.

"Because of my own experiences with asthma and because I have watched my children suffer with allergies, I bring a more personal approach to the care that I deliver. I know first-hand what a patient (and a parent of a child) with allergies and asthma feels. These experiences help me understand every aspect of care of my patients and motivates me to keep up with the latest scientific information."

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