Division of Gynecological Oncology

Division of Gynecological Oncology

City of Hope’s Division of Gynecological Oncology offers certain minimally invasive techniques as part of treatment for most gynecological cancers, reducing the scarring, blood loss and pain associated with traditional surgery. We also offer preventative surgery for women at high risk for developing cancer.
Our experts apply many of the latest technological advances to make minimally invasive surgery even better. We are one of the few institutions to operate four da Vinci S HD Surgical Systems – the most advanced robotic surgery systems available.
Our team possesses a thorough knowledge of robotics, due to both our large volume of patients and expertise across a wide variety of procedures. The robotic surgical approach results in smaller incisions, reducing trauma to the patient and assisting in quicker healing. This means our patients will feel better faster and return sooner to their normal lives.
Our team of surgical experts treat all types of gynecologic cancers, including:

Gynecologic Oncology Surgery Team

Duarte - Main Campus; Arcadia

Christopher Chung, M.D., is a urogynecologist and an associate clinical professor in the Division of Gynecologic Oncology. He sees patients in Duarte and Arcadia, California.

Lennar Foundation Cancer Center; Huntington Beach

 Joshua G. Cohen, M.D., F.A.C.O.G., F.A.C.S., is a board-certified gynecologic oncologist dedicated to offering his patients in Orange County empathy and excellence in clinical care.

Maria de Leon
Maria C.B. de Leon, M.D.
Gynecologic Oncologist
Antelope Valley; Mission Hills; Santa Clarita

Maria de Leon, M.D., is an assistant clinical professor in City of Hope's Division of Gynecologic Oncology, specializing in diagnosis and treatment of cervical, endometrial/uterine and ovarian cancers.

Thanh H. Dellinger, M.D.
Gynecologic Oncologist
Duarte - Main Campus; Glendora

Thanh H. Dellinger, M.D., is a gynecologic oncologist focusing on ovarian cancer, cervical cancer, uterine cancer, robotic surgery and fertility sparing cancer treatments.

Amy Hakim
Amy Hakim, M.D., M.S.
Gynecologic Oncologist
Simi Valley; Thousand Oaks; Mission Hills

Amy Hakim, M.D., is a surgical oncologist dedicated to treating gynecological cancers. In addition to providing gynecological surgery options to treat cancer, Dr. Hakim is also studying the connection these cancers’ connection to then human papillomavirus (HPV) and the HPV vaccine.

Ernest S. Han, M.D., Ph.D.
Gynecologic Oncologist
Duarte - Main Campus

Ernest Han, M.D., Ph.D., is a gynecologic oncologist with specialized training in minimally invasive and robotic-assisted surgery.

Mehdi M. Kebria, M.D.
Gynecologic Oncologist
Corona; Upland

Mehdi M. Kebria, M.D., is a gynecologic oncologist and assistant clinical professor in the Division of Gynecologic Oncology within the Department of Surgery.

Stephen Lee
Stephen J. Lee, M.D.
Gynecologic Oncologist
Duarte - Main Campus; South Pasadena

Stephen Lee, M.D., is a gynecologic oncologist focusing on ovarian cancer, uterine (endometrial) cancer, cervical cancer, and robotic surgery.

Wei-Chien Michael Lin, M.D.
Gynecologic Oncologist
Mission Hills; Santa Clarita

Wei-Chien Michael Lin, M.D., is a gynecologic oncologist at City of Hope's Mission Hills and Santa Clarita, California, locations.

Jeff F Lin, MD
Jeff F. Lin, M.D.
Gynecologic Oncologist
South Bay

Jeff F. Lin, M.D., is a gynecologic oncologist in the Department of Surgery at City of Hope.