Clinical Professor of Medicine, Division of Allergy and Immunology, Rutgers- New Jersey Medical School, Newark, New Jersey
Associate Professor of Internal Medicine, Division of Allergy and Immunology, Saint Louis University School of Medicine; Director, Nasal and Paranasal Sinus
Research Laboratory; Co-Director, Comprehensive Sinus Clinic; Assistant Professor of Otolaryngology
Attending Physician, Saint Louis University Hospital, St. Louis, MO; Consultant, John Cochran VA Medical Center, St. Louis, MO; Attending Physician, Cardinal Glennon Children’s Hospital, St. Louis, MO; Medical provider for 8 HMO/PPO groups
Junior Attending Physician, Washington Hospital Center, Washington, DC
Consultant, Monell Chemical Senses Center, Philadelphia, PA
Consultant in allergy to NIH/NIAID extramural programs