Mohamad Ezzeddine Allaf, M.D.

Headshot of Mohamad Ezzeddine Allaf
  • Urologist-in-Chief, The Johns Hopkins Hospital
  • Professor of Urology

Languages: English, Arabic


Kidney Cancer, Laparoscopic Kidney Surgery, Prostate Cancer, Robotic Prostatectomy, Urology more

Research Interests

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

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Outside of Maryland & Washington D.C.

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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
Phone: 410-502-7710 | Fax: 410-502-7711
The Johns Hopkins Hospital - Google Maps

Johns Hopkins Outpatient Center (now called Levi Watkins, Jr., M.D., Outpatient Center)

Appointment Phone: 410-955-6100
601 N. Caroline St.
Baltimore, MD 21287
Phone: 410-502-7710 | Fax: 410-502-7711
Johns Hopkins Outpatient Center (now called Levi Watkins, Jr., M.D., Outpatient Center) - Google Maps

Johns Hopkins Medicine - Green Spring Station

Appointment Phone: 410-955-6100
10803 Falls Rd
Pavilion III, Suite 3300
Lutherville, MD 21093
Phone: 410-616-7600 | Fax: 410-616-7601
Johns Hopkins Medicine - Green Spring Station - Google Maps


Dr. Mohamad Allaf is Professor of Urology and Oncology, as well as Director of the Department of Urology and the Brady Urological Institute, Urologist-in-Chief of the Johns Hopkins Hospital, and Director of Minimally Invasive and Robotic Surgery.

Dr. Allaf is a world renowned surgeon-scientist having performed more than 2,000 robotic procedures and published over 250 peer reviewed research papers in the field's best journals.

As one of the busiest robotic radical prostatectomy surgeons in the world, he aims to achieve the best outcomes for his patients. Having trained with Dr. Patrick Walsh, Dr. Allaf has used Dr. Walsh's method of radical prostatectomy as the basis for his own anatomic method to this complex operation.

Dr. Allaf is also amongst the leaders in kidney cancer surgery, having served on the American Urological Association Guideline Committee for Kidney Cancer. He led a team who performed the rigorous analysis to help inform the most recent guidelines that was funded by the Agency for Healthcare Research and Quality (AHRQ). He is best known for his ability to save the kidney and remove the tumor in patients with kidney tumors.

Dr. Allaf runs a research endeavor aiming to decrease the morbidity associated with the treatment of cancer, and he has mentored numerous leaders in academic urology. He is actively involved in fund raising for research and education, and believes in expanding our base of support in order to advance our important mission. more


  • Urologist-in-Chief, The Johns Hopkins Hospital
  • Jakurski Family Director
  • Director, Minimally Invasive and Robotic Surgery
  • Director, Department of Urology
  • Professor of Urology
  • Professor of Oncology

Departments / Divisions

Centers & Institutes



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


  • Urology; Johns Hopkins University School of Medicine (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
  • 2018 Top Doctor, Baltimore Magazine


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