Dr. Katherine E. Tierney is an obstetrician-gynecologist in Los Angeles, California and is affiliated with multiple hospitals in the area, including Keck Medical Center of USC and Kaiser Permanente Sunnyside Medical Center. She received her medical degree from University of Southern California School of Medicine and has been in practice between 11-20 years. Dr. Katherine E. Tierney accepts Aetna - see other insurance plans accepted.