In college, Dr. Johnston was drawn to Immunology and considered a career as an immunologist. After spending time working in the lab, he realized that it would be much more exciting to treat people with immune disorders and allergy, especially since he grew up having both allergies and asthma. Dr. Johnston was attracted to Osteopathic medicine because its core principles focus on the body's ability to function as a whole and heal itself, a key role of the immune system. Dr. Johnston's clinical interests include, food allergy, eosinophilic esophagitis and hereditary angioedema (HAE), a rare genetic swelling disorder. He is involved in clinical research and serves as a principal investigator for trials aimed at treatment for eosinophilic esophagitis, hereditary angioedema and desensitization of peanut allergy.
Learn about this doctor
Dr. Johnston's Experience
For the best healthcare for your needs, choose a doctor who specializes in your medical condition.
Board certification indicates that a doctor is highly qualified in the medical field in which they practice.
Check to see that this provider treats your medical condition.
Check to see that this provider performs the procedure that you need.
Check to see if your provider has any malpractices, board actions, or sanctions.
Learn more about where this provider went to medical school, residency, and more.
Awards & Recognition
View information about special awards and recognition for this provider.
Check to see what languages this provider and/or staff speak.
Memberships & Professional Affiliations
View memberships and affiliations associated with this provider.
Overall Patient Satisfaction
Likelihood of recommending Dr. Johnston to family and friends is 5 out of 5