Welcome to the Allergy & Asthma Group of Chino Hills Dr. Mahesh Vyas is Board Certified Allergist. Adult and Pediatric Allergy Testing and Treatment. We provide complete testing and treatment for HAY-FEVER, SINUSES, ASTHMA, ECZEMA, HIVES FOOD-DRUG & INSECT ALLERGIES. Orange County Location 8245 E Monte Vista Rd #200 Anaheim Hills. All PPO Insurance Accepted .