Colorectal Surgery Team

Andreas M. Kaiser, M.D., professor and chief, Division of Colorectal Surgery, Department of Surgery, specializes in colorectal diseases
Mark Hanna, M.D., is an assistant clinical professor in the Division of Colorectal Surgery, Department of Surgery.
Lily Lai, M.D., is a colorectal surgeon and associate professor in the Division of Colorectal Surgery, Department of Surgery.
Kurt A. Melstrom, M.D., is an associate clinical professor in the Division of Colorectal Surgery, Department of Surgery.
Stephen M. Sentovich, M.D., M.B.A., is a colorectal surgeon and a clinical professor in the Division of Colorectal Surgery, Department of Surgery.

Yasmin Zerhouni, M.D., is an assistant clinical professor in the Division of Colorectal Surgery, Department of Surgery.

Aziz Ahmad, M.D., is a surgical oncologist in City of Hope's Glendora location.

Moshe Faynsod, M.D., is surgical oncologist at City of Hope ǀ South Bay in Torrance, California.
Aaron Lewis, M.D., is a surgeon at City of Hope's South Pasadena and Arcadia locations, specializing in general oncologic surgery.

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.
City of Hope's I. Benjamin Paz, M.D., is a nationally renowned surgical oncology surgeon, with expertise in breast cancer, gastrointestinal and rectal cancers, and tumors involving the bone and soft tissues.

Heather Player, M.D., is breast and colon cancer surgeon and an assistant clinical professor in the Division of Surgical Oncology at City of Hope. She practices at City of Hope | Antelope Valley and Mission Hills.

Yih-Dar Nien, M.D., is a cancer surgeon at City of Hope's Antelope Valley and Santa Clarita locations.