Provider Directory / C / Kara Crosby DO Kara Crosby, DO Allergy & Immunology Specialties: Allergy & Immunology Phone Number: 303-234-1067 Fax: 303-232-2967 Website Link: https://www.denverallergy.com/ Address: Boulder Valley Asthma and Allergy Clinic 3950 Broadway, Boulder, CO 80304 Get Directions