Dr. Cowan has four offices in California.
Specializing in the field of Allergy / Immunology, Dr. Cowan is prepared to provide specialized treatment for allergic reactions and immunological diseases. Dr. Cowan treats and manages disorders such as asthma, hives, all types of allergies (food, environmental, etc.), rhinitis and sinusitis, as well as other disorders and diseases that affect the body's immune system. Dr. Cowan is also trained to practice Aerospace Medicine.