Orange County Oncologists

Orange County Oncologists
Finding out you have cancer can be overwhelming for you and your loved ones. Experts advise taking the time to make important decisions and, if possible, asking a friend or loved one to help during these early days.
 
One of the most important decisions you will need to make is selecting your doctor (the oncologist) and the medical team that will support you.
 
What is an Oncologist?
An oncologist is a doctor who specializes in treating cancer. He or she will guide every aspect of your care, so it is essential that you feel confident with this doctor’s approach and level of expertise.
 
Know that there are different types of oncologists. While there are specialists in various types of cancers, sub-specialists have very high levels of expertise in specific cancers. Sub-specialties have become more important due to the increasing complexity of cancer care.
 
Many sub-specialists work at City of Hope. These experts are well-known on the national level for their depth of knowledge in a cancer type and research focused on treating and curing cancer.Their expertise is often sought-after because it is on a different level than community oncologists.
 
If you are just beginning your search for an oncologist, here are some tips:
  • Seek out a doctor who treats the specific cancer-type that have. Depending on your treatment plan, you may need more than one oncologist, including a medical, surgical, and/or radiation oncologist.
  • Discuss your choice with family and friends, especially those treated for similar types of cancer. Ask about the doctors they have seen and their experiences.
  • Evaluate the doctor's credentials. Find out if the doctor is involved in any research or clinical trials, which is very important for cancer patients.
  • Find out who will be on your treatment team: registered nurses, social workers, nutritionists, pharmacists, counselors, treatment planners, etc. You will rely on your team for many different aspects of your care.
  • Arrange to meet the doctor and the staff. These days, virtual interviews are more common than in-person. Have a list of questions ready for your virtual visit.
 
Second Opinions
If you already received a diagnosis and have a physician lined up, ask about second opinion services. The best time for a second opinion is before your therapy begins. Our team of world-renowned oncologists and other cancer experts can work with you and your doctor in providing a second opinion. They will help you understand your diagnosis and the cancer treatments that are available to you. If you would like a second opinion, schedule a consultation by calling us at 800-826-4673 or request an appointment online.
Lennar Foundation 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.

Ibrahim Aldoss
Ibrahim T. Aldoss, M.D.
Hematologist-Oncologist
Duarte - Main Campus; Lennar Foundation Cancer Center

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; Lennar Foundation Cancer Center

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

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 a hematologist at City of Hope Orange County Lennar Foundation Cancer Center. For Dr. Borogovac, the patient is the most important part of the medical team. She sees the opportunity to provide care to people with cancer as a privilege. 

Luke Chen, M.D.
Medical Oncologist and Hematologist
Lennar Foundation Cancer Center; Seacliff

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 prostate cancer and other malignancies.

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 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.

Meet Dr. Seth A. Cohen
Seth A. Cohen, M.D.
Urologic Surgeon; Urogynecologist
Newport Beach; Lennar Foundation Cancer Center

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 Orange County.

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

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

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

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

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.

Meet Dr. Seth A. Cohen
Seth A. Cohen, M.D.
Urologic Surgeon; Urogynecologist
Newport Beach; Lennar Foundation Cancer Center

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 Orange County.

Lennar Foundation Cancer Center; Huntington Beach; Newport Beach; Seacliff

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.

Doctor Misagh Karimi
Misagh Karimi, M.D.
Medical Oncologist and Hematologist
Lennar Foundation Cancer Center; Newport Beach

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.

Amrita Krishnan, M.D.
Lennar Foundation Cancer Center; Newport Beach

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.

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

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

Hoda Pourhassan, M.D
Hoda Pourhassan, M.D.
Hematologist-Oncologist
Duarte - Main Campus; Newport Beach; West Covina

Hoda Pourhassan, M.D., is a hematologist-oncologist in the Department of Hematology & Hematopoietic Cell Transplantation at City of Hope.

George Semeniuk III, M.D.
George Bernard Semeniuk, III, M.D.
Medical Oncologist and Hematologist
Newport Beach; Lennar Foundation Cancer Center

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

Wade Smith, M.D.
Wade Smith, M.D.
Medical Oncologist and Hematologist
Newport Beach; Duarte - Main Campus; Lennar Foundation Cancer Center

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

Dr.Tin Tang  profile image
Tingting Tan, M.D., Ph.D.
Medical Oncologist and Hematologist
Newport Beach; Duarte - Main Campus

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.

Huntington Beach
Lennar Foundation Cancer Center; Huntington Beach; Newport Beach; Seacliff

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; Lennar Foundation Cancer Center; Seacliff

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; Sand Canyon; Long Beach Worsham; Newport 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; Seacliff

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; Seacliff

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.

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

Nerses Simon Tchekmedyian, M.D., FACP, 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.

Long Beach Worsham
Sassan Farjami, M.D.
Medical Oncologist and Hematologist
Long Beach Elm; Long Beach Worsham

Sassan Farjami, M.D., is a hematologist and medical oncologist at City of Hope's Long Beach Elm and Long Beach Worsham locations. Dr. Farjami is also an associate clinical professor in the Department of Medical Oncology & Therapeutics Research.

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

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

Andrew Nguyen, M.D.
Andrew Nguyen, M.D.
Surgical Oncologist
South Bay; Long Beach Worsham

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.

Karla-Olmedo
Karla Olmedo, M.D.
Hematologist-Oncologist
Long Beach Elm; Long Beach Worsham
Lihong Wu, M.D.
Medical Oncologist and Hematologist
Long Beach Elm; Long Beach Worsham

Lihong Wu, M.D., is a medical oncologist and hematologist at City of Hope's Long Beach Elm and Worsham 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.

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

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.

Long Beach Elm
Sassan Farjami, M.D.
Medical Oncologist and Hematologist
Long Beach Elm; Long Beach Worsham

Sassan Farjami, M.D., is a hematologist and medical oncologist at City of Hope's Long Beach Elm and Long Beach Worsham locations. Dr. Farjami is also an associate clinical professor in the Department of Medical Oncology & Therapeutics Research.

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

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

Karla-Olmedo
Karla Olmedo, M.D.
Hematologist-Oncologist
Long Beach Elm; Long Beach Worsham
Nerses Simon Tchekmedyian, M.D., FACP
Medical Oncologist and Hematologist
Lennar Foundation Cancer Center; Huntington Beach; Long Beach Elm; Seacliff

Nerses Simon Tchekmedyian, M.D., FACP, 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.

Lihong Wu, M.D.
Medical Oncologist and Hematologist
Long Beach Elm; Long Beach Worsham

Lihong Wu, M.D., is a medical oncologist and hematologist at City of Hope's Long Beach Elm and Worsham 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.