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Dr. Fritz, who grew up in Portland, has been practicing allergy and asthma medicine for over 17 years. He is pleased to provide his expertise at his two new offices in Gresham and Happy Valley. We are well versed in treating all types of allergies, from the most common to the rarest. Portland Allergy & Asthma is one of the few clinics in Oregon to provide food, venom, and drug desensitization, along with being one of the largest practices on the West Coast for Hereditary Angioedema (HAE) patients and research studies.


With patient-centered care being the heart of our practice, we take the time necessary to understand your particular needs. Our goal is to have you feeling better walking out of our office than when you first walked in.

In addition to the time and attention we provide our patients, what makes us unique is our involvement and commitment to research in the field of allergy and asthma. Dr. Fritz has been the principal investigator in over 50 FDA approved studies and is recognized as a leader in his field.

Being involved in the research of new allergy and asthma treatments allows us to bring cutting edge therapies to our patients which few practices can match.  At Portland Allergy & Asthma, your care is in good hands.

We look forward to helping you with your allergy and asthma needs.



Contact Info:

Happy Valley Clinic

9200 SE 91st Avenue Suite #220  

Happy Valley OR 97086

​(971) 358-5600



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Dr. Stephen Fritz - America's Top 50 Doctors - Allergist - Oregon

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