Dr. Karen Kiefer, DO is a highly experienced psychiatrist based in Diamond Bar, CA, with over 47 years in the medical field. She graduated from Midwestern University in 1976 and specializes in Psychiatry and Child & Adolescent Psychiatry, with a particular focus on treating Major Depressive Disorder. Dr. Kiefer is dedicated to her practice, as evidenced by positive feedback from her patients, who appreciate her supportive approach, particularly in times of need....