Leslie Klein, MD

Primary Specialty

Medical Oncology & Hematology

Special Interests



Dr. Leslie Klein joined Ironwood Cancer & Research Centers in 2015.  She is board certified in Oncology and Hematology. She completed medical school at University of Nebraska, internal medicine residency at Harbor-UCLA, and hematology/oncology fellowship at UC Irvine. Dr. Klein integrates next-generation cancer treatment including targeted and immune therapies.

Dr. Klein specializes in breast cancer, lung cancer, gastrointestinal cancers, melanoma, lymphoma, and blood disorders. Her accomplished research background includes authoring a breast cancer clinical trial. She is known for her compassionate, upbeat personality. “I develop relationships with my patients and treat them as I would my own loved ones.” She enjoys travel with her husband, daughter, and dog.

Curriculum Vitae (CV)

Read more about Dr. Klein here.

Contact Us

Medical Education

Doctor of Medicine

University of Nebraska Medical Center


University of California, Irvine, Orange, CA
Hematology & Medical Oncology

Board Certification

Board Certified in Hematology and Medical Oncology

Dr. Klein is fluent in English and Spanish and accepts patients at our Scottsdale and Phoenix locations.

Phone (Phoenix):         602-494-6800
Fax (Phoenix):              602-494-6803

Phone (Scottsdale):     480-314-6670
Fax (Scottsdale):          480-257-1997