MEET OUR PROVIDERS

Meet Our Providers

Mark C Stahl, DO

Apex Allergy and Asthma, led by Dr. Mark Stahl, DO, provides expert allergy and asthma care for adults and children in San Antonio, Texas. A double board-certified specialist in allergy, immunology, and pediatrics, he provides personalized, innovative, and cost-effective treatments tailored to each patient’s needs.

Dr. Stahl earned his doctor of osteopathy degree from Michigan State University in 2003, followed by a pediatric residency at Keesler Air Force Base and Wright-Patterson Air Force Base.

Dr. Stahl completed a fellowship in pediatric and adult allergy/immunology at Wilford Hall Medical Center and served 11 years in the United States Air Force, where he gained extensive experience managing complex allergy and immunology cases.

Beyond clinical practice, Dr. Stahl has held academic positions at Wright State University, the University of Texas Health Science Center, and Baylor College of Medicine. He previously served as the Allergy Clinic Director at The Children's Hospital of San Antonio, demonstrating his leadership in the field.

By actively participating in research and professional organizations, including the Texas Allergy, Asthma, & Immunology Society and the San Antonio Allergy, Asthma, & Immunology Society, Dr. Stahl remains at the forefront of advancements in allergy and immunology to ensure the highest quality care for his patients.

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In 2011, Dr. Stahl further enhanced his expertise through a pediatric and adult allergy/immunology fellowship at Wilford Hall Medical Center on Lackland Air Force Base in San Antonio. His 11-year service in the United States Air Force, coupled with his academic contributions, demonstrates his dedication to advancing the field.

Notably, Dr. Stahl has made significant contributions to academia, serving in various roles at Wright State University, the University of Texas Health Science Center at San Antonio, and Baylor College of Medicine. His role as Allergy Clinic Director at The Children's Hospital of San Antonio showcases his commitment to patient care.

Dr. Stahl's certifications from the American Board of Allergy and Immunology and the American Board of Pediatrics underscore his expertise. To stay at the forefront of advancements, he actively participates in professional organizations, including the Texas Allergy, Asthma, & Immunology Society, the San Antonio Allergy, Asthma, & Immunology Society, and more.

The Apex Allergy and Asthma team operates with a patient-centric approach. Through blood tests, skin patch testing, and other minimally invasive allergy tests, we diagnose and treat issues like eczema and angioedema. By identifying the underlying triggers of food allergies, environmental allergies, and hives, we ensure patients receive precise treatment.

Our customized allergy treatments encompass over-the-counter and prescription medications. Dr. Stahl and his team also offer various immunotherapies, including rush and cluster immunotherapy, for swift and lasting relief from allergy symptoms.

Moreover, our team provides on-site pulmonary function testing to evaluate breathing issues and confirm asthma diagnoses. We prioritize respiratory health, collaborating closely with each patient to mitigate risks and enhance well-being.

If you're seeking expert assistance in managing acute or chronic allergy and asthma symptoms, look no further. Contact the nearest Apex Allergy and Asthma office or conveniently request an appointment online. Your path to improved health and comfort starts here.

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David E. Hrncir, MD

Dr. David E. Hrncir is a board-certified allergist with over three decades of experience in allergy and immunology, pediatrics, and aerospace medicine.

Dr. Hrncir earned his medical degree from the University of Texas Southwestern Medical School in Dallas. Before entering private practice, he served with the United States Air Force for 26 years, during which he held key leadership roles, including chief flight surgeon, chief of pediatrics, chief of allergy and immunology, and chief of aeromedical services.

Dr. Hrncir also pursued advanced medical training at renowned institutions such as Johns Hopkins School of Hygiene and Public Health in Maryland, David Grant Medical Center at Travis Air Force Base in California, the School of Aerospace Medicine at Brooks Air Force Base in Texas, and Wilford Hall Medical Center at Lackland Air Force Base in Texas.

With a passion for helping patients breathe easier and live healthier lives, Dr. Hrncir brings a wealth of experience and a commitment to providing compassionate, personalized care to patients of all ages.