Leonard S. Sender

Leonard S. Sender
, MD

Young Adult Cancer
Medical Oncology
Pediatric Hematology/Oncology
Nickname: Lennie

Office Locations

UC Irvine Health Chao Family Comprehensive Cancer Center
101 The City Drive South, Building 23
Orange, CA 92868
Phone: 714-456-8761
CHOC Children's
1201 W. La Veta Ave.
Orange, CA 92868
Phone: 714-532-8636
  • American Board of Pediatrics, Pediatric Hematology-Oncology
  • American Board of Pediatrics, Pediatrics
Clinical Interests
  • Adolescent and young adult (AYA) cancers
  • Brain tumors
  • Leukemia
  • Lymphoma
  • Melanoma
  • Myeloma
  • Sarcoma
  • English
Medical School
University of Witwatersrand, Johannesburg, South Africa
UC Irvine Medical Center, Pediatrics
UC Irvine Medical Center, Pediatrics
Children's Hospital Los Angeles, Pediatric Hematology, Oncology
Professional Positions
  • Deputy Director, Chao Family Comprehensive Cancer Center
  • Director, Clinical Oncology Services, Department of Medicine
  • Division Chief, Pediatric Oncology, Chao Family Comprehensive Cancer Center
  • Principal Investigator, Children's Oncology Group, Chao Family Comprehensive Cancer Center
Awards and Recognition
  • America's Top Doctors (Brain Tumors, Leukemia, Lymphoma, Melanoma, Sarcoma, Young Adult Cancer), Castle Connolly Medical Ltd., 2013
  • Best Doctors in America®, 2011-2013
  • Physicians of Excellence, Orange County Medical Association, 2012-2015
More Information
Dr. Sender, medical director of the oncology services team at the Chao Family Comprehensive Cancer Center, is a nationally known expert in disorders of the blood and lymphatic system. His clinical interests include breast cancer, melanoma, leukemia, myeloma, sarcoma, lymphoma and brain tumors.

A founder of SeventyK, a nonprofit organization designed to raise awareness of the 70,000 young adults and adolescents diagnosed with cancer, Sender is committed to offering these patients the best chance at a full recovery and full life.

Sender, who has repeatedly been named one of the Best Doctors in America® for pediatrics, is board certified in pediatrics and pediatric hematology/oncology.

Academic Profile
View this doctor's academic profile >

Speakers Bureau Topics

  • Adolescent and Young Adult (AYA) Cancers
  • Bone Marrow Transplantation
  • Hematology-Oncology
  • Leukemia, Acute and Chronic
  • Lymphoma, Hodgkins and non-Hodgkins
  • Melanoma
  • Multiple Myeloma
  • Pediatric Cancers
  • Sarcoma, Bone and Soft Tissue
  • Stem Cell Transplantation