To make an appointment, call 314-996-8670.

Washington University allergists and immunologists provide comprehensive evaluation and management of patients with allergies, asthma, chronic sinusitis, allergic rhinitis (hay fever), urticaria (hives) and drug sensitivity. The board-certified allergists and immunologists in this group also have broad experience in the diagnosis and management of rarer and more difficult-to-treat inherited and acquired immunodeficiency disorders that lead to recurrent skin and respiratory tract infections.

Our offices serve as a resource to physicians and patients for diagnosis and treatment of allergic and immunological disorders ranging from the ordinary to the most challenging.

Allergy and immunology services

Allergies sometimes can interfere with your day-to-day activities and decrease quality and productivity of your life and work. Our allergists and immunologists provide evaluation and treatment of the following allergy problems. 

Our allergists and immunologists are located throughout St. Louis, in the Central West End, West County and South County.

For more information, visit the Allergy & Immunology website.

Rebekah Browning, MD, PhD

Pediatric Allergy

Locations:
St. Louis Children’s Hospital

Alexa M. Doss, MD

Pediatric Allergy
Pediatric Lung Health (Pulmonology)

Locations:
St. Louis Children’s Hospital
St. Louis Children’s Specialty Care Center – West County
St. Louis Children’s Specialty Care Center – South County
Washington University Specialty Care – North County

Tiffany Biason Dy

Tiffany Biason Dy, MD

Allergy & Immunology

Locations:
The Highlands
Center for Advanced Medicine – South County
Village Square – North County

Alysa G. Ellis

Alysa G. Ellis, MD

Pediatric Allergy

Locations:
St. Louis Children’s Hospital
St. Louis Children’s Specialty Care Center – West County

Omar H. Elsayed-Ali, MD

Allergy & Immunology

Locations:
Center for Advanced Medicine – South County
Barnes-Jewish West County Hospital – Medical Office Building 2
Village Square – North County

Khaled Hamid, MD, PhD

Khaled A. Hamid, MD, PhD

Allergy & Immunology

Locations:
The Highlands
Barnes-Jewish West County Hospital – Medical Office Building 2
Center for Advanced Medicine – South County

Katherine Carr Hollabaugh, MD

Pediatric Allergy
Pediatric Lung Health (Pulmonology)

Locations:
St. Louis Children’s Hospital
St. Louis Children’s Specialty Care Center – West County

Caroline C. Horner

Caroline C. Horner, MD

Allergy & Immunology
Lung Health (Pulmonology)
Pediatric Allergy
Pediatric Lung Health (Pulmonology)

Locations:
St. Louis Children’s Hospital
St. Louis Children’s Specialty Care Center – West County

Maya R. Jerath

Maya R. Jerath, MD, PhD

Allergy & Immunology

Locations:
Barnes-Jewish West County Hospital – Medical Office Building 2
The Highlands
Village Square – North County

Samantha Johnson, MSN, APRN, CPNP

Pediatric Allergy

Locations:
St. Louis Children’s Hospital
St. Louis Children’s Specialty Care Center – West County
Washington University Specialty Care – North County