Orange County Urologic Cancer Doctors

Nishan Tchekmedyian, M.D., M.B.A, is a hematologist and medical oncologist at City of Hope's Orange County and Seacliff locations.

Jeffrey S. Yoshida, M.D., is the medical director of urologic surgery at City of Hope Orange County. He is currently located at the City of Hope Orange County and Seacliff locations. 

Cory Hugen, M.D., is an associate clinical professor in the Division of Urology and Urologic Oncology in the Department of Surgery at City of Hope Orange County.

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.

Charisma Mylavarapu, D.O., is a dedicated physician specializing in gastrointestinal and genitourinary malignancies. Her journey into medicine was driven by a lifelong fascination with science and a deep commitment to community service.

Charles B. Nguyen, M.D., is an assistant clinical professor in the Department of Medical Oncology & Therapeutics Research at City of Hope Orange County.

Sumanta Kumar Pal, M.D., F.A.S.C.O., is an internationally recognized leader in the area of genitourinary cancers, including kidney and bladder. He is the co-director of City of Hope’s Kidney Cancer Program.

Alex Zhu, D.O., is a urologic oncologist who specializes in the surgical treatment of bladder, kidney, prostate and upper urinary tract cancers.

Percy Lee, M.D., is the medical director of Orange County and coastal region radiation oncology and vice chair for clinical research in the Department of Radiation Oncology.

Dr. Weng is a radiation oncologist and assistant clinical professor in the Department of Radiation Therapy at City of Hope Orange County.

Jason Salsamendi, M.D., is a interventional radiologist and clinical professor in the Department of Diagnostic Radiology at City of Hope.

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.