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Mohamad Ezzeddine Allaf, M.D.

Photo of Dr. Mohamad Ezzeddine Allaf, M.D.

Vice Chairman, Department of Urology

Professor of Urology


Languages: English, Arabic

Expertise: Adrenal Tumors, Cryosurgery, Kidney Cancer, Kidney Cysts, Kidney Stones, Kidney Transplant, Laparoscopic Kidney Surgery, Pelvic Organ Prolapse, Prostate Cancer, Retroperitoneal Lymph Node Dissection, Robotic Prostatectomy, Testicular Cancer, Ureteropelvic Junction Obstruction, Urology, Von Hippel-Lindau (VHL) more

Research Interests: Minimally invasive surgery; image guided therapy; nerve preservation after radical prostatectomy; robotic surgery; small kidney tumors more

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The Johns Hopkins Hospital
Appointment Phone: 410-955-6100

600 N. Wolfe Street
Sheikh Zayed Tower Suite 223
Baltimore, MD 21287 map
Phone: 410-502-7710
Fax: 410-502-7711

Johns Hopkins Outpatient Center
Appointment Phone: 410-955-6100

601 N. Caroline St.
Baltimore, MD 21287 map
Phone: 410-502-7710
Fax: 410-502-7711


Dr. Mohamad Allaf is professor of urology and oncology at the Johns Hopkins School of Medicine and Director of Minimally Invasive and Robotic Urological Surgery at The Johns Hopkins Hospital. He is also an associate professor of biomedical engineering.

As a urologic oncologist, his main clinical focus includes the treatment of kidney tumors and prostate cancer. While expert in both open and minimally invasive surgery, he specializes in robotic approaches to these diseases and is amongst the busiest robotic surgeons in the world.

He performs the following robotic procedures on a regular basis: nerve-sparing radical prostatectomy, partial and radical nephrectomy, pyeloplasty, adrenalectomy, and retroperitoneal lymph node dissection (for testicular cancer patients).

He joined the Johns Hopkins staff after receiving his undergraduate and medical degrees from the Johns Hopkins University and completing his residency and advanced training in urology at Johns Hopkins as well.

Dr. Allaf runs a research laboratory aimed at decreasing the morbidity associated with the treatment of urologic cancers. He oversees a large registry of patients who have small kidney tumors and elect for careful and active observation. Additionally, given his background as a biomedical engineer, he is a leader in developing future technological advancements in the field of robotic and minimally invasive surgery.

Dr. Allaf has been the recipient of numerous academic awards and has been invited nationally and internationally to demonstrate robotic surgery and lecture on robotic prostatectomy and kidney surgery. He has written and published numerous research articles, textbook chapters, patents and video presentations in the field of laparoscopic and robotic urologic surgery. more


  • Vice Chairman, Department of Urology
  • Director of Adult Urology
  • Director, Minimally Invasive and Robotic Surgery
  • Professor of Urology
  • Associate Professor of Biomedical Engineering
  • Professor of Oncology

Centers & Institutes



  • MD, Johns Hopkins University School of Medicine (2000)


  • Johns Hopkins University School of Medicine / Urology (2006)

Board Certifications

  • American Board of Urology / Urology (2008)

Research & Publications

Research Summary

Dr. Allaf runs a research laboratory aimed at decreasing the morbidity associated with the treatment of urologic cancers. He oversees a large registry of patients who have small kidney tumors and elect for careful and active observation.

Clinical Trial Keywords

small renal tumor, ablation, robotics, kidney tumor

Selected Publications

View all on Pubmed

Allaf ME, Partin AW, Carter HB. The importance of pelvic lymph node dissection in men with clinically localized prostate cancer. Rev Urol. 2006 Summer;8(3):112-9.

Warlick CA, Mouli SK, Allaf ME, Wagner AA, Kavoussi LR. Bladder irrigation using hydrogen peroxide for clot evacuation. Urology. 2006 Dec;68(6):1331-2.

Muntener M, Nielsen ME, Romero FR, Schaeffer EM, Allaf ME, Brito FA, Pavlovich CP, Kavoussi LR, Jarrett TW. Long-Term Oncologic Outcome after Laparoscopic Radical Nephroureterectomy for Upper Tract Transitional Cell Carcinoma. Eur Urol. Jan, 2007.

Warlick CA, Lima GC, Allaf ME, Varkarakis I, Permpongkosol S, Schaeffer EM, Kavoussi LR, Jarrett TW, Solomon SB. Clinical sequelae of radiographic iceball involvement of collecting system during computed tomography-guided percutaneous renal tumor cryoablation. Urology. 2006 May;67(5):918-22.

Warlick CA, Allaf ME, Carter HB. Expectant treatment with curative intent in the prostate-specific antigen era: triggers for definitive therapy. Urol Oncol. 2006 Jan-Feb;24(1):51-7.

Activities & Honors


  • American Urological Association Foundation Scholar, 2006
  • First Place Clinical Research Annual Essay Contest, AUA, 2005
  • First Place Laboratory Research Annual Essay Contest, AUA, 2005
  • Lapides Annual Essay Contest on Urodynamic and Neurourology Research, Honorable Mention, 2005
  • First Place Mid-Atlantic American Urological Association Research Essay Contest, 2004
  • Pfizer Research Scholar Award, 2004
  • Outstanding Laparoscopic Surgeon Resident Award, Society of Laparoendoscopic Surgeons, 2003
  • Harold Lamport Research Award, JHU SOM, 1999
  • Chesapeake Education Summer Research Fellowship, JHU SOM, 1997
  • Summa Cum Laude, 1996
  • Richard J. Johns Award for Outstanding Achievement in Biomedical Engineering, JHU, 1996
  • Howard Hughes Summer Research Fellowship, 1995
  • Biomedical Engineering Undergraduate Research Award, JHU, 1995
  • Tau Beta Pi, Engineering Class Rank=1/200, 1995


  • American Urological Association
  • Endourological Society
  • Sexual Medicine Society of North America

Videos & Media

Mohamad E. Allaf, MD, Johns Hopkins Medicine, Department of Urology

Minimally Invasive Surgery | Eduardo’s Story

Robotic Prostate Surgery | Q&A

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