Madhavi Mummaneni, MD

Dr. Timothy E. Byun is a board-certified Hematologist and Medical Oncologist with over 20 years of experience, practicing in Orange County, California. He is affiliated with St. Joseph Heritage Medical Group and specializes in general hematology, medical oncology, and clinical cancer research, emphasizing comprehensive and compassionate care. Dr. Byun completed his medical education at Rush Medical College and underwent residency and fellowship training at the University of California, Irvine. He has received multiple accolades for his work, including recognition as an OCMA Physician of Excellence, and is actively involved in leadership roles within cancer research initiatives. Generated from the website

Xinhe Wei, NP-C, is a dedicated Hematology-Oncology provider affiliated with St. Joseph Heritage Medical Group in Orange, California. With a focus on treating various blood disorders and cancers, the practice is committed to delivering compassionate care to all patients, particularly those who are vulnerable. As part of the larger Providence network, Xinhe Wei collaborates with multiple medical groups to ensure comprehensive access to healthcare services. The practice emphasizes a mission rooted in compassion, dignity, and excellence, striving to serve the community with integrity and justice. Generated from the website

At the Gynecologic Oncology Program at St. Joseph Hospital, our team of clinical experts are passionate about preventing, diagnosing and treating women with cancers of the ovaries, uterus, fallopian tubes, cervix, vagina and vulva. That's why they actively participate in community-based programs that promote the importance of early detection through cervical and human papillomavirus (HPV) screenings and vaccinations. Our clinical team is equally passionate about cancer research and advanced treatment options that can potentially cure cancer and preserve healthy reproductive tissue. Our specialists are experts in treating rare and complex cases, including recurrent disease and therapy-related complications. This pursuit of prevention, early detection and clinical excellence enhances the patient experience and contributes to improved clinical outcomes.