City of Hope Orange County Doctors

Lennar Foundation Cancer Center World-Renowned Physicians

City of Hope Orange County Doctors

In opening its visionary comprehensive cancer center in Orange County, City of Hope is creating a national model for delivering breakthrough research and pioneering treatments. Welcome to City of Hope Orange County Lennar Foundation Cancer Center – the most advanced comprehensive cancer center in Orange County. Here, patients receive fully integrated, multidisciplinary cancer care — from prevention through survivorship — in one convenient location. Orange County residents can now access world-renowned treatment, research and cancer cures close to home.

Meet some of the world’s most acclaimed physician-scientists — with expertise in lung, breast, gastrointestinal, gynecological, genitourinary, blood cancers and more – assembled from across the country. They’re leading next-level cancer treatment and research.
City of Hope Orange County Lennar Foundation Cancer Center
OC Lennar Physicians
Cancer Center
Mouchammed Agko, M.D.
Assistant Clinical Professor, Division of Plastic Surgery, Department of Surgery
Duarte - Main Campus; Lennar Foundation Cancer Center

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.

Nairi Berner, M.D.
Lennar Foundation Cancer Center

Nairi Berner, M.D., is an Assistant Clinical Professor, Department of Diabetes, Endocrinology & Metabolism.

Tanuja Bhandari
Tanuja A. Bhandari, M.D.
Radiation Oncologist
Providence Saint Joseph of Orange Radiation Oncology; Lennar Foundation Cancer Center

Tanuja Bhandari, M.D., is a radiation oncologist at City of Hope who is well-versed in all forms of radiation oncology, including intraoperative radiation therapy.

Lennar Foundation Cancer Center

Azra Borogovac, M.D., M.S., is an Assistant Clinical Professor, Department of Hematology & Hematopoietic Cell Transplantation at City of Hope Orange County.

Lennar Foundation Cancer Center

Jennifer Chen M.D., is a Lead Breast Imager and Assistant Clinical Professor, Department of Diagnostic Radiology at City of Hope Orange County.

Jessica Cheng, M.D.
Lennar Foundation Cancer Center

Jessica Cheng, M.D., is an Assistant Clinical Professor, Department of Supportive Care Medicine at City of Hope Orange County. Dr. Cheng is among the nation’s few, and Orange County’s only, fellowship-trained experts in cancer rehabilitation medicine.

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.

Seth A. Cohen, M.D.
Urologic Surgeon; Urogynecologist
Lennar Foundation Cancer Center; Glendora; Pasadena

Seth Cohen, M.D., is a urologic surgeon with a focus on female pelvic medicine and reconstructive surgery at City of Hope's community practice sites in Glendora and Pasadena.

P. Grace Harrell, M.D., M.P.H.
Lennar Foundation Cancer Center; Duarte - Main Campus

P. Grace Harrell, M.D., M.P.H., is an associate clinical professor, Department of Anesthesiology.

Cory Hugen
Lennar Foundation Cancer Center

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.

Network Locations
OC Regional Clinic Physicians
Huntington Beach
Mohamad N. Barakat, M.D.
Medical Oncologist and Hematologist
Huntington Beach; Irvine Sand Canyon

Mohamad N. Barakat, M.D., is a medical oncologist and hematologist at City of Hope's Huntington Beach and Irvine Sand Canyon locations. Dr. Barakat focuses on working as a team with fellow experts from across oncology specialties and offering access to leading-edge technology at City of Hope.

Luke Chen, M.D.
Medical Oncologist and Hematologist
Huntington Beach; Irvine Sand Canyon

Luke Chen, M.D., is a medical oncologist and hematologist at City of Hope's Huntington Beach and Irvine Sand Canyon locations. Dr. Chen’s research has explored ways to improve treatment for pancreatic cancer and other malignancies.

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.

Sudarsan Vishnu Kollimuttathuillam, M.D.
Medical Oncologist and Hematologist
Huntington Beach; Irvine Sand Canyon

Sudarsan Vishnu Kollimuttathuillam, M.D., is a medical oncologist and hematologist at City of Hope's Huntington Beach and Irvine Sand Canyon locations. Dr. Kollimuttathuillan places a priority on offering his patients access to innovative treatments and clinical trial options.

Christian C. Lu, M.D., M.H.S.
Christian C. Lu, M.D., M.H.S.
Assistant Clinical Professor
Long Beach Elm; Huntington Beach

Christian Co Lu, M.D., M.H.S., is a patient-centric physician with 15+ years of experience in medical care. 

Danny Nguyen, M.D.
Medical Oncologist and Hematologist
Lennar Foundation Cancer Center; Huntington Beach; Long Beach Elm

Danny Nguyen, M.D., is a medical oncologist and hematologist at City of Hope's Huntington Beach and Irvine Sand Canyon locations. Dr. Nguyen is also an assistant clinical professor in the Department of Medical Oncology & Therapeutics Research.

Nishan Tchekmedyian, M.D.
Medical Oncologist and Hematologist
Lennar Foundation Cancer Center; Huntington Beach

Nishan Tchekmedyian, M.D., is a hematologist and medical oncologist at City of Hope's Huntington Beach, Irvine Sand Canyon, and Newport Beach Lido locations.

N. Simon Tchekmedyian, M.D.
Medical Oncologist and Hematologist
Lennar Foundation Cancer Center; Huntington Beach; Long Beach Elm

N. Simon Tchekmedyian, M.D., is a medical oncologist and hematologist at City of Hope's Huntington Beach, Irvine Sand Canyon, Long Beach Elm locations. Dr. Tchekmedyian is also a clinical professor in the Department of Medical Oncology & Therapeutics Research.

Irvine Sand Canyon
Mohamad N. Barakat, M.D.
Medical Oncologist and Hematologist
Huntington Beach; Irvine Sand Canyon

Mohamad N. Barakat, M.D., is a medical oncologist and hematologist at City of Hope's Huntington Beach and Irvine Sand Canyon locations. Dr. Barakat focuses on working as a team with fellow experts from across oncology specialties and offering access to leading-edge technology at City of Hope.

Luke Chen, M.D.
Medical Oncologist and Hematologist
Huntington Beach; Irvine Sand Canyon

Luke Chen, M.D., is a medical oncologist and hematologist at City of Hope's Huntington Beach and Irvine Sand Canyon locations. Dr. Chen’s research has explored ways to improve treatment for pancreatic cancer and other malignancies.

Dilruba Haque, M.D.
Medical Oncologist and Hematologist
Irvine Sand Canyon; Newport Beach Fashion Island

Dilruba Haque, M.D., is a medical oncologist and hematologist and an assistant clinical professor in the Department of Medical Oncology & Therapeutics Research. Dr. Haque is located at City of Hope's Irvine Sand Canyon and Newport Beach Fashion Island offices.

Yaser Homsi, M.D.
Medical Oncologist and Hematologist
Newport Beach Fashion Island; Irvine Sand Canyon

Yaser Homsi, M.D., is a hematologist and medical oncologist at City of Hope's Huntington Beach, Irvine Sand Canyon and Newport Beach Fashion Island locations. He is also an assistant clinical professor in the Department of Medical Oncology & Therapeutics Research.

Sudarsan Vishnu Kollimuttathuillam, M.D.
Medical Oncologist and Hematologist
Huntington Beach; Irvine Sand Canyon

Sudarsan Vishnu Kollimuttathuillam, M.D., is a medical oncologist and hematologist at City of Hope's Huntington Beach and Irvine Sand Canyon locations. Dr. Kollimuttathuillan places a priority on offering his patients access to innovative treatments and clinical trial options.

Headshot of Nikki Zahabi, D.O.
Nikki Zahabi, D.O.
Assistant Clinical Professor, Department of Medicine
Irvine Sand Canyon; Long Beach Elm

Nikki Zahabi, D.O., is an assistant clinical professor with a strong background in internal medicine and critical care in the Department of Medicine at City of Hope in Duarte, California.

Newport Beach Fashion Island
Monzr M. Al Malki, M.D.
Monzr M. Al Malki, M.D.
Hematologist-Oncologist
Duarte - Main Campus; Newport Beach Fashion Island

Monzr M. Al Malki, M.D., is an associate professor in the Department of Hematology & Hematopoietic Cell Transplantation and is board certified in internal medicine, hematology and medical oncology at City of Hope.

Ibrahim Aldoss
Ibrahim T. Aldoss, M.D.
Hematologist-Oncologist
Duarte - Main Campus; Newport Beach Fashion Island

Ibrahim T. Aldoss, M.D., is a hematologist-oncologist and board certified in internal medicine, medical oncology and hematology. His clinical expertise is in acute lymphoblastic leukemia and acute myeloid leukemia.

Haris Ali
Haris Ali, M.D.
Hematologist-Oncologist
Duarte - Main Campus; Newport Beach Fashion Island

Haris Ali, M.D., is an hematologist-oncologist and associate professor in the department of Hematology & Hematopoietic Cell Transplantation.

Dilruba Haque, M.D.
Medical Oncologist and Hematologist
Irvine Sand Canyon; Newport Beach Fashion Island

Dilruba Haque, M.D., is a medical oncologist and hematologist and an assistant clinical professor in the Department of Medical Oncology & Therapeutics Research. Dr. Haque is located at City of Hope's Irvine Sand Canyon and Newport Beach Fashion Island offices.

Yaser Homsi, M.D.
Medical Oncologist and Hematologist
Newport Beach Fashion Island; Irvine Sand Canyon

Yaser Homsi, M.D., is a hematologist and medical oncologist at City of Hope's Huntington Beach, Irvine Sand Canyon and Newport Beach Fashion Island locations. He is also an assistant clinical professor in the Department of Medical Oncology & Therapeutics Research.

Misagh Karimi, M.D.
Medical Oncologist
Lennar Foundation Cancer Center; Newport Beach Fashion Island

Misagh Karimi, M.D., is a medical oncologist who is passionate about patient education, appearing frequently at community forums to discuss obesity, the environment and other possible risk factors for cancer.

Edward Sanghyun Kim
Newport Beach Fashion Island

Edward S. Kim, M.D., M.B.A., is the physician-in-chief of City of Hope Orange County and Vice Physician-in-Chief of City of Hope National Medical Center.

Amrita Krishnan, M.D.
Lennar Foundation Cancer Center; Newport Beach Fashion Island; Duarte - Main Campus

Amrita Krishnan, M.D., directs the Judy and Bernard Briskin Center for Multiple Myeloma Research at City of Hope's cancer research hospital, seeking to make gains in one of the most rapidly changing areas in cancer research.

Richard T. Lee, M.D.
Medical Director, Supportive & Integrative Medicine, Department of Supportive Care Medicine
Lennar Foundation Cancer Center; Newport Beach Fashion Island; Duarte - Main Campus

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.

Guido Marcucci
Guido Marcucci, M.D.
Professor and Chair, Department of Hematologic Malignancies Translational Science
Duarte - Main Campus; Newport Beach Fashion Island

Guido Marcucci, M.D., is professor and chair of the Department of Hematological Malignancies Translational Science and chief of the Division of Leukemia.