Retired OAAC Allergist Dies Sunday, June 12, 2016 A 40 year staff member of the OAAC, Charles D. Haunschild, M.D., surrounded by family and friends, died on August 12, 2019 The post Retired OAAC Allergist Dies appeared first on Oklahoma Allergy and Asthma Clinic. Next Article: Nurse Practitioner rejoins OAAC Related Blogs Return to Blogs