Leonard S. Marks, MD

Leonard S. Marks, MD


Professor and deKernion Endowed Chair, Department of Urology





Institutional Affiliation

Ronald Reagan UCLA Medical Center



Surgery, Harbor - UCLA Medical Center, 1969 - 1970


MD, University of Texas Medical Branch at Galveston, 1969


Urology, UCLA School of Medicine, 1974 - 1978
Surgery, Harbor - UCLA Medical Center, 1972 - 1973

Board Certification

Urology, American Board of Urology, 1980

Contact Information

Clinical Interests

Prostate Disease

Scientific Interests

Dr. Leonard Marks' scientific interests include prostate imaging and targeted biopsy, minimally-invasive therapy for prostate cancer and testosterone replacement therapy.

Highlighted Publications

Filson CP, Natarajan S, Margolis DJ, Huang J, Lieu P, Dorey FJ, Reiter RE, Marks LS. Prostate cancer detection with magnetic resonance-ultrasound fusion biopsy: The role of systematic and targeted biopsies. Cancer. 2016 Mar 15;122(6):884-92. doi: 10.1002/cncr.29874. Epub 2016 Jan 7.

Natarajan S, Raman S, Priester AM, Garritano J, Margolis DJ, Lieu P, Macairan ML, Huang J, Grundfest W, Marks LS. Focal Laser Ablation of Prostate Cancer: Phase I Clinical Trial. J Urol. 2015 Dec 31. pii: S0022-5347(15)05540-8. doi: 10.1016/j.juro.2015.12.083. [Epub ahead of print]

Nassiri N, Natarajan S, Margolis DJ, Marks LS. Targeted Prostate Biopsy: Lessons Learned Midst the Evolution of a Disruptive Technology. Urology. 2015 Sep;86(3):432-8. doi: 10.1016/j.urology.2015.07.001. Epub 2015 Jul 10.

Filson CP, Marks LS, Litwin MS. Expectant management for men with early stage prostate cancer. CA Cancer J Clin. 2015 Jul-Aug;65(4):265-82. doi: 10.3322/caac.21278. Epub 2015 May 8.

Le JD, Stephenson S, Brugger M, Lu DY, Lieu P, Sonn GA, Natarajan S, Dorey FJ, Huang J, Margolis DJ, Reiter RE, Marks LS. Magnetic resonance imaging-ultrasound fusion biopsy for prediction of final prostate pathology. J Urol. 2014 Nov;192(5):1367-73. doi: 10.1016/j.juro.2014.04.094. Epub 2014 May 1.