Orange County Breast Cancer Doctors

Jennifer Tseng, M.D., F.A.C.S., is the Medical Director of Breast Surgery, City of Hope Orange County.

Irene Kang, M.D., is medical director of women’s health medical oncology and assistant professor in medical oncology and therapeutics research.

Amanda Schwer, M.D., is an Assistant Clinical Professor, Department of Radiation Oncology at City of Hope Orange County. As a third-generation Orange County native, Dr. Schwer is proud to play a part in bringing extraordinary cancer care to the community that is so close to her heart.

Piers Pravdo, D.O., is a radiologist at City of Hope Orange County Lennar Foundation Cancer Center’s state-of-the-art radiology suites for advanced diagnostic imaging and precision cancer care.

Fairouz Chibane, M.D., M.B.A., is an assistant clinical professor at City of Hope Orange County Lennar Foundation Cancer Center in Irvine, California.

Dr. Natalie Johnson is a prominent specialist in surgery for breast cancer, thyroid cancer, parathyroid disease, and melanoma.

Specializing in bioengineering and tumor micro-environment in cancer development and progression, Andrew Nguyen, M.D., is an assistant clinical professor in the Division of Surgical Oncology in the Department of Surgery at City of Hope.

Plastic surgeon Mouchammed Agko, M.D., understands that many cancer survivors want to continue their lives after treatment without physical reminders of the disease. His goal is to help them achieve that — in addition to providing additional aesthetic improvements, if it meets a patient’s needs.

Luke Chen, M.D., is a medical oncologist and hematologist at City of Hope Orange County Lennar Foundation Cancer Center and Seacliff locations. Dr. Chen’s research has explored ways to improve treatment for prostate cancer and other malignancies.

Sudarsan Vishnu Kollimuttathuillam, M.D., is a medical oncologist and hematologist at City of Hope Orange County's Lennar Foundation Cancer Center and Seacliff locations. Dr. Kollimuttathuillan places a priority on offering his patients access to innovative treatments and clinical trial options.

Peter Ngo, M.D., is an assistant clinical professor, Department of Medical Oncology and Therapeutics Research at City of Hope Long Beach Elm and Worsham.

Karla Olmedo, M.D., is a rising star in medical oncology and hematology. Dr. Olmedo is driven by the pursuit of advances in immunology and the promise of cell therapy in effectively fighting cancer. 

Krushangi Patel, M.D., is a highly engaged practitioner who prioritizes not only her patients' physical well-being but also their emotional and spiritual needs.

Wade Smith, M.D., is a medical oncologist specializing in breast cancer at City of Hope's Orange County, Newport Beach and Duarte locations.

George Bernard Semeniuk, III, M.D., is a hematologist/oncologist specializing in leukemia, lymphoma and hematopoietic cell transplantation.

Tingting Tan, M.D., Ph.D., is a medical oncologist and assistant clinical professor in the Department of Medical Oncology & Therapeutics Research at City of Hope.

Katarina Vasiljevic, M.D., is a dedicated and compassionate physician specializing in breast cancer. Her journey into medicine was driven by her nurturing personality and a strong interest in science.

Lihong Wu, M.D., is a medical oncologist and hematologist at City of Hope's Long Beach locations. Dr. Wu has made it her mission to help others triumph over cancer. She prides herself on being there for her patients and finding the best possible treatments for them.

Richard T. Lee, M.D., is the medical director of the Integrative Medicine Program in the Department of Supportive Care Medicine at City of Hope.

Jessica Cheng, M.D., is among the nation’s few, and Orange County’s only, fellowship-trained experts in cancer rehabilitation medicine. This is a subspecialty of physical medicine and rehabilitation (PM&R) also known as physiatry.