Allergy & Asthma Associates They are knowledgeable in the following conditions / disorders: Asthma. Allergy & Asthma Associates is located on 27800 Medical Center Rd Ste 244 in Mission Viejo. They can be reached by phone by calling (949) 364-2900 . They can be reached by calling (949) 364-2900 . They rank #1 on MojoPages for Doctors. They have a single review on MojoPages.com, and it's a positive review.