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.
- Allergic conjunctivitis
- Allergic reactions to drugs, foods, mold or other irritants
- Allergic rhinitis
- Asthma
- Chronic or acute urticaria (hives)
- Drug desensitizations
- Hives
- Eczema
- Nasal polyps
- Pediatric allergy
- Sinusitis
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.
![](https://physicians.wustl.edu/wp-content/uploads/2022/09/Doss-Alexa_Peds_300-280x386.jpg)
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](https://physicians.wustl.edu/wp-content/uploads/2020/06/Tiffany-Dy-280x386.jpg)
Tiffany Biason Dy, MD
Allergy & Immunology
Locations:
The Highlands
Center for Advanced Medicine – South County
Village Square – North County
![Alysa G. Ellis](https://physicians.wustl.edu/wp-content/uploads/2020/06/Alysa-Ellis-280x386.jpeg)
Alysa G. Ellis, MD
Pediatric Allergy
Locations:
St. Louis Children’s Hospital
St. Louis Children’s Specialty Care Center – West County
![](https://physicians.wustl.edu/wp-content/uploads/2020/09/Elsayed-Ali-Omar_Med__04_1400x1930-280x386.png)
Omar H. Elsayed-Ali, MD
Allergy & Immunology
Locations:
Center for Advanced Medicine – South County
Barnes-Jewish West County Hospital – Medical Office Building 2
The Highlands
Village Square – North County
![Khaled Hamid, MD, PhD](https://physicians.wustl.edu/wp-content/uploads/2022/07/abdel-Hamid-Khaled_Med_04_300-280x386.jpg)
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
![Caroline C. Horner](https://physicians.wustl.edu/wp-content/uploads/2020/06/Caroline-Horner-280x386.jpeg)
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](https://physicians.wustl.edu/wp-content/uploads/2020/06/Maya-Jerath-280x386.jpeg)
Maya R. Jerath, MD, PhD
Allergy & Immunology
Locations:
Barnes-Jewish West County Hospital – Medical Office Building 2
The Highlands
Village Square – North County
![](https://physicians.wustl.edu/wp-content/uploads/2024/06/Albrecht-Samantha_Peds_1400x1930-280x386.png)
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
![Jeremy Katcher, MD](https://physicians.wustl.edu/wp-content/uploads/2022/12/Katcher-Jeremy_IM_04_300-280x386.jpg)
Jeremy S. Katcher, MD
Allergy & Immunology
Locations:
The Highlands
Barnes-Jewish West County Hospital – Medical Office Building 2