GregoryPZagajaMD

Urology • Chicago, IL

Minimally Invasive Surgery, Surgical Oncology

Professor of Surgery, University of Chicago Medicine

Join to view full profile

Dr. Zagaja is on Doximity

As a Doximity member you'll join over two million verified healthcare professionals in a private, secure network.

Connect with other colleagues in the same hospital or clinic
Search all U.S. specialist profiles and refer a patient
Read the latest clinical news and earn CME/CEU credits

See Dr. Zagaja's full profile

Already have an account?

Office
5841 S. MARYLAND AVE.
M/C 6038
Chicago, IL 60637
Phone+1 773-834-4830

Fax+1 773-702-1001
Is this information wrong?

Education & Training

University of ChicagoResidency, Urology, 1994 - 1998
Johns Hopkins UniversityResidency, Surgery, 1993 - 1994
Yale-New Haven Medical CenterInternship, Transitional Year, 1991 - 1992
National University of Ireland, Galway Faculty of MedicineClass of 1990

Certifications & Licensure

IL State Medical License 1994 - 2026
American Board of Urology Urology

Awards, Honors, & Recognition

CMS Meaningful Use Stage 1 Certification EpicCare Ambulatory EMR, Epic Systems Corporation, 2012-2013
Super Doctor SuperDoctors.com

Clinical Trials

Study of Polyphenon E in Men With High-grade Prostatic Intraepithelial Neoplasia Start of enrollment: 2007 Nov 14
Completed
Phase 2

Publications & Presentations

PubMed

2 citations
A Contemporary Report of Low-Dose-Rate Brachytherapy for Prostate Cancer Using MRI for Risk Stratification: Disease Outcomes and Patient-Reported Quality of Life.
Mira Patel, William Tyler Turchan, Christopher G Morris, Dana Augustine, Tianming Wu, Aytek Oto, Gregory P Zagaja, Stanley L Liauw> ;Cancers. 2023 Feb 20
3 citations
Seminal vesicle cystadenoma with dysplasia: missing link to adenocarcinoma?
Vaibhav Chumbalkar, Gregory P. Zagaja, Rodolfo Montironi, Gladell P. Paner> ;Histopathology. 2021 Mar 29
2 citations
"Robotic fatigue?" - The impact of case order on positive surgical margins in robotic-assisted laparoscopic prostatectomy.
Laura Bukavina, Kirtishri Mishra, Amr Mahran, Austin Fernstrum, Al Ray, Sarah C. Markt, Fredrick R. Schumacher, Britt Conroy, Robert Abouassaly, Gregory T. MacLennan, ...> ;Urologic Oncology. 2021 Jun 1
11 citations
Setting up a pediatric robotic urology program: A USA institution experience.
Prithvi Murthy, Marcelo A. Orvieto, Gregory P. Zagaja, Arieh L. Shalhav, Mohan S. Gundeti> ;International Journal of Urology. 2018 Feb 1
24 citations
Extraprostatic Extension Is Extremely Rare for Contemporary Gleason Score 6 Prostate Cancer
Blake B. Anderson, Daniel T. Oberlin, Aria Razmaria, Bonnie Choy, Gregory P. Zagaja, Arieh L. Shalhav, Joshua J. Meeks, Ximing J. Yang, Gladell P. Paner, Scott E. Eggener> ;European Urology. 2017 Sep 1
107 citations
Prognostic Significance of Percentage and Architectural Types of Contemporary Gleason Pattern 4 Prostate Cancer in Radical Prostatectomy.
Bonnie Choy, Shane M. Pearce, Blake B. Anderson, Arieh L. Shalhav, Gregory P. Zagaja, Scott E. Eggener, Gladell P. Paner> ;The American Journal of Surgical Pathology. 2016 Oct 1
8 citations
The impact of days off between cases on perioperative outcomes for robotic-assisted laparoscopic prostatectomy
Shane M. Pearce, Joseph J. Pariser, Sanjay G. Patel, Blake B. Anderson, Scott E. Eggener, Gregory P. Zagaja> ;World Journal of Urology. 2016 Feb 1
22 citations
Contemporary Population-Based Comparison of Localized Ductal Adenocarcinoma and High-Risk Acinar Adenocarcinoma of the Prostate
Vignesh T. Packiam, Sanjay G. Patel, Joseph J. Pariser, Kyle A. Richards, Adam B. Weiner, Gladell P. Paner, David J. VanderWeele, Gregory P. Zagaja, Scott E. Eggener> ;Urology. 2015 Oct 1
3 citations
Bloody otorrhea after robotically assisted laparoscopic prostatectomy.
Andrew J. Cohen, Rodrigo Ledezma-Rojas, Ernest Mhoon, Gregory P. Zagaja> ;The Canadian Journal of Urology. 2015 Jun 1
8 citations
Robotic-assisted pelvic lymph node dissection for prostate cancer: frequency of nodal metastases and oncological outcomes
Rodrigo Ledezma, Edris Negron, Aria Razmaria, Pankaj P. Dangle, Scott E. Eggener, Arieh L. Shalhav, Gregory P. Zagaja> ;World Journal of Urology. 2015 Feb 21
24 citations
Early Removal of Urethral Catheter with Suprapubic Tube Drainage Versus Urethral Catheter Drainage Alone after Robot-Assisted Laparoscopic Radical Prostatectomy
Sandip M. Prasad, Michael C. Large, Amit R. Patel, Olufenwa Famakinwa, R. Matthew Galocy, Theodore Karrison, Arieh L. Shalhav, Gregory P. Zagaja> ;The Journal of Urology. 2014 Jul 1
2 citations
How accurate is our clinical prediction of "minimal prostate cancer"?
Dan Leibovici, Sergey Shikanov, Ofer N. Gofrit, Gregory P. Zagaja, Yaniv Shilo, Arieh L. Shalhav> ;The Israel Medical Association Journal. 2013 Jul 1
21 citations
Short (≤1 mm) positive surgical margin and risk of biochemical recurrence after radical prostatectomy
Sergey Shikanov, P. Marchetti, Vikas Desai, Aria Razmaria, Tatjana Antic, Hikmat Al-Ahmadie, Gregory P. Zagaja, Scott E. Eggener, Charles B. Brendler, Arieh L. Shalhav> ;BJU International. 2013 Apr 1
9 citations
Functional outcomes in African-Americans after robot-assisted radical prostatectomy.
G. Joel DeCastro, Gautam Jayram, Aria Razmaria, Arieh L. Shalhav, Gregory P. Zagaja> ;Journal of Endourology. 2012 Aug 7
11 citations
Challenges and potential solutions to meeting accrual goals in a Phase II chemoprevention trial for prostate cancer.
Nagi B. Kumar, Theresa Crocker, Tiffany Smith, Julio M. Pow-Sang, Philippe E. Spiess, Kathleen Egan, Gwen Quinn, Michael J. Schell, Said M. Sebti, Aslam Kazi, Tian Chu...> ;Contemporary Clinical Trials. 2012 Mar 1
7 citations
Prostate Cancer Chemoprevention Targeting Men with High-Grade Prostatic Intraepithelial Neoplasia (HGPIN) and Atypical Small Acinar Proliferation (ASAP): Model for Tri...
Nagi B. Kumar, Theresa Crocker, Tiffany Smith, Shahnjayla Connors, Julio M. Pow-Sang, Philippe E. Spiess, Kathleen Egan, Gwen Quinn, Michael J. Schell, Said M. Sebti, ...> ;Journal of Clinical Trials. 2012 Jan 21
104 citations
Positive Surgical Margins After Robotic Assisted Radical Prostatectomy: A Multi-Institutional Study
Vipul R. Patel, Rafael F. Coelho, Bernardo Rocco, Marcelo A. Orvieto, Ananthakrishnan Sivaraman, Kenneth J. Palmer, Darian Kameh, Luigi Santoro, Geoff Coughlin, Michae...> ;The Journal of Urology. 2011 Aug 1
52 citations
Serum/glucocorticoid-regulated kinase 1 expression in primary human prostate cancers.
Russell Z. Szmulewitz, Elizabeth K. Chung, Hikmat Al-Ahmadie, Silver Daniel, Masha Kocherginsky, Aria Razmaria, Gregory P. Zagaja, Charles B. Brendler, Walter M. Stadl...> ;The Prostate. 2012 Feb 1
6 citations
Gleason 6 Prostate Cancer in One or Two Biopsy Cores Can Harbor More Aggressive Disease
Mark H. Katz, Sergey Shikanov, Maxine Sun, Firas Abdollah, Lars Budaeus, Edward M. Gong, Scott E. Eggener, Gary D. Steinberg, Gregory P. Zagaja, Arieh L. Shalhav, Pier...> ;Journal of Endourology. 2011 Apr 7
33 citations
Continence Outcomes in Patients Undergoing Robotic Assisted Laparoscopic Mitrofanoff Appendicovesicostomy
Mark A. Wille, Gregory P. Zagaja, Arieh L. Shalhav, Mohan S. Gundeti> ;The Journal of Urology. 2011 Apr 1
39 citations
Robotic Radical Prostatectomy in Patients with High-Risk Disease: A Review of Short-Term Outcomes from a High-Volume Center
Gautam Jayram, Guarionex J. Decastro, Michael C. Large, Aria Razmaria, Gregory P. Zagaja, Arieh L. Shalhav, Charles B. Brendler> ;Journal of Endourology. 2011 Mar 14
50 citations
Paediatric robotic‐assisted laparoscopic augmentation ileocystoplasty and Mitrofanoff appendicovesicostomy (RALIMA): feasibility of and initial experience with the Uni...
Mohan S. Gundeti, Sujeet S. Acharya, Gregory P. Zagaja, Arieh L. Shalhav> ;BJU International. 2011 Mar 1
20 citations
Impact of Prostate Weight on Probability of Positive Surgical Margins in Patients With Low-risk Prostate Cancer After Robotic-assisted Laparoscopic Radical Prostatectomy
P. Marchetti, Sergey Shikanov, Aria Razmaria, Gregory P. Zagaja, Arieh L. Shalhav> ;Urology. 2011 Mar 1
8 citations
Intraoperative frozen section assessment of pelvic lymph nodes during radical prostatectomy is of limited value
Jie Song, Mei Li, Gregory P. Zagaja, Jerome B. Taxy, Arieh L. Shalhav, Hikmat Al-Ahmadie> ;BJU International. 2010 Nov 1
8 citations
Robot-assisted laparoscopic intracorporeal hand-sewn bowel anastomosis during pediatric bladder reconstructive surgery.
Mohan S. Gundeti, Aimee L. Wiltz, Gregory P. Zagaja, Arieh L. Shalhav> ;Journal of Endourology. 2010 Jul 29
Join now to see all