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Meet The Faculty

A urology resident works with his mentor at Mayo Clinic in Rochester, Minnesota.

The Urology Residency faculty members are well-regarded in their fields and are committed to teaching and the growth of medical knowledge. 

From the program director

Boyd Viers, M.D.Mayo Clinic provides broad exposure to all aspects of urology with leaders/mentors in all urologic subspecialties. We annually match five residents into a six-year program with a dedicated year of search in the PGY4 year. The intern year includes six months of urology along with trauma, ICU, general surgery, plastics/transgender, colorectal, and transplant surgery.

One unique aspect of our residency is the preceptorship model, whereby residents are matched 1:1 with faculty members for two-month rotations. In this environment, residents participate in outpatient clinic, OR, and postoperative care of the same patients, maximizing continuity and providing early surgical exposure. Our chief residents spend approximately half of their year managing their own service, and function as faculty advisors to junior residents rotating on their service.

With some of the most unique and well-organized databases, research opportunities are abundant and our residents graduate with an average of nine or more peer-reviewed publications. Our residents also graduate with well-balanced skills in robotic, open, and endoscopic techniques, and are ready to immediately manage a high-volume clinic.

Boyd R. Viers, M.D.
Program Director, Urology Residency 

Faculty

In addition to caring for patients in their clinical practices, our 24 faculty members are committed to teaching and facilitating the growth of medical knowledge. Many of our faculty members have published and lectured extensively and are well-regarded in their fields.

You have direct access to the faculty throughout the Urology Residency.

Katie Anderson, M.D. Katie Anderson, M.D.
Assistant Professor of UrologyInterests:
  • Neurogenic bladder
  • Urinary diversions
  • Urethral stricture disease
  • Ureteral stricture
  • Genitourinary fistula
  • External genitourinary reconstruction and buried penis
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Stephen Boorjian, M.D Stephen Boorjian, M.D.
Professor of UrologyInterests:
  • Surgical management of advanced renal cell carcinoma
  • Retroperitoneal lymph node dissection for testicular cancer
  • Nerve-sparing robotic prostatectomy
  • Management of high-risk prostate cancer
  • Orthotopic neobladder reconstruction
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George Chow, M.D. 

George Chow, M.D.
Assistant Professor of Urology

Interests:

  • Laparoscopic donor nephrectomy
  • Laparoscopic specimen extraction
  • Radiofrequency ablation of adrenal/kidney
  • Urologic surgical robots
  • Uroradiographic imaging
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Daniel Elliott, M.D.

Daniel Elliott, M.D.
Professor of Urology

Interests:

  • Male incontinence
  • Artificial urinary sphincter and voiding dysfunction
  • Management of vaginal mesh complications
  • Female urology/incontinence
  • Surgical and nonsurgical management of female incontinence and voiding problems
  • Vaginal prolapse
  • BPH treatment
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Igor Frank, M.D. 

Igor Frank, M.D.
Professor of Urology

Interests:

  • Nerve-sparing robotic prostatectomy
  • Management of localized and advanced prostate cancer
  • Bladder cancer surgery and reconstruction including bladder replacement
  • Research interests in urologic oncology and robotics
  • Single port robotic pelvic surgery

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Patricio Gargollo, M.D. 

Patricio Gargollo, M.D.
Professor of Urology

Interests:

  • Pediatric genitourinary tumors
  • Rhabdomyosarcoma
  • Wilm's Tumor
  • Testicular cancer
  • Bladder exstrophy
  • Hypospadias
  • Inguinal hernia
  • Vesico-uteral reflux

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Candace Granberg, M.D. 

Candace Granberg, M.D.
Assistant Professor of Urology

Interests:

  • Genitourinary Rhabdomyosarcoma
  • Wilms Tumor
  • Testicular cancer in children and adolescents
  • Hypospadias
  • Ureteropelvic junction obstruction
  • Pediatric stone disease
  • Cryptorchidism

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Sevann Helo, M.D. 

Sevann Helo, M.D.
Assistant Professor of Urology

Interests:

  • Male infertility
  • Fertility preservation
  • Male sexual dysfunction
  • Benign penile and scrotal conditions
  • Peyronie's disease
  • Male hypogonadism and testosterone deficiency

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Jeffery Karnes, M.D.

Jeffrey Karnes, M.D.
Professor of Urology

Interests:

  • Recurrent and advanced urologic cancers
  • Bladder cancer: urine markers/treatment/surgery including reconstruction and replacement
  • Prostate cancer including nerve-sparing surgery
  • Penile/urethral cancers
  • Residents and fellow education

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Tobias Kohler, M.D., M.P.H.

Tobias Kohler, M.D., M.P.H.
Professor of Urology

Interests:

  • Male sexual dysfunction
  • Erectile dysfunction
  • Implantation of penile prostheses
  • Minimally invasive therapies for BPH
  • Surgical education

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Kevin Koo, M.D., M.P.H.

Kevin Koo, M.D., M.P.H.
Assistant Professor of Urology

Interests:

  • Bladder stones
  • Kidney stones
  • Ureterocele
  • Urinary obstruction

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Eugene Kwon, M.D.

Eugene Kwon, M.D.
Professor of Immunology and Urology

Interests:

  • Prostate cancer
  • Clinical trials
  • Immunology research

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Bradley Leibovich, M.D.

Bradley Leibovich, M.D.
Professor of Urology

Interests:

  • Surgical management of testicular cancer
  • Management of small renal masses
  • Nephron-preserving renal surgery
  • Open and minimally invasive surgery including robotics
  • Immunobiology of renal cell carcinoma
  • Cancer prognosis

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Brian Linder, M.D.

Brian Linder, M.D.
Associate Professor of Urology and Obstetrics/Gynecology

Interests:

  • Management of pelvic organ prolapse including vaginal, robotic, and abdominal surgeries
  • Treatments for stress urinary incontinence including urethral slings (synthetic and autologous) and urethral bulking injections
  • Urinary incontinence
  • Repair of genitourinary fistula
  • Management of urethral diverticulum

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Derek Lomas, M.D.

Derek Lomas, M.D.
Assistant Professor of Urology

Interests:

  • Prostate cancer diagnostics and risk stratification
  • Trans-perineal prostate biopsy including targeted biopsy
  • Prostate imaging (MRI, Ultrasound)
  • Focal therapy for prostate cancer including cryotherapy and high intensity focused ultrasound (HIFU)
  • Active surveillance for prostate cancer
  • Minimally invasive treatments for BPH

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Robert McLaren, M.D.

Robert McLaren, M.D.
Assistant Professor of Urology

Interests:

  • Abnormal urine cytology
  • Bladder neck obstruction
  • Elevated PSA
  • Gross hematuria
  • Penile cancer
  • Phimosis
  • Spermatocele
  • Vasectomy

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Lance Mynderse, M.D.

Lance Mynderse, M.D.
Associate Professor of Radiology and Urology

Interests:

  • Minimally invasive therapies for BPH and prostate cancer
  • Sexual dysfunction in men and women
  • Men's health specialty clinic
  • Reproductive endocrinology
  • Infertility clinic
  • Women's urologic health clinic

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David Patterson, M.D.

David Patterson, M.D.
Professor of Urology

Interests:

  • BPH laser surgery
  • Endourology
  • General urology
  • Urolithiasis
  • Bladder cancer

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Aaron Potretzke, M.D.

Aaron Potretzke, M.D.
Assistant Professor of Urology

Interests:

  • Stone disease of the urinary tract
  • Surgical management of kidney cancer
  • Management of small renal masses
  • Localized prostate cancer
  • Minimally-invasive (laparoscopic and robotic) surgery

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Paras Shah, M.D.

Paras Shah, M.D.

Interests:

  • Benign prostatic hyperplasia
  • Bladder cancer
  • Kidney cancer
  • Prostate cancer
  • Ureteral cancer

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R. Houston Thompson, M.D.

R. Houston Thompson, M.D.
Professor of Urology

Interests:

  • Renal cell carcinoma
  • Urothelial carcinoma
  • Prostatic adenocarcinoma
  • Testicular cancer

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Matthew Tollefson, M.D.

Matthew Tollefson, M.D.
Associate Professor of Urology

Interests:

  • Nerve-sparing robotic prostatectomy
  • Management of localized and advanced prostate cancer
  • Advanced laparoscopic surgery
  • Bladder cancer surgery and reconstruction including bladder replacement
  • Research interests in urologic oncology, robotics, and laparoscopy

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Boyd Viers, M.D.

Boyd Viers, M.D.
Associate Professor of Urology

Interests:

  • Open and advanced robotic genitourinary reconstruction
  • Male urethral stricture disease
  • Ureteral stricture
  • Genitourinary fistula
  • Urinary diversion
  • Male stress incontinence

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Matthew Ziegelmann, M.D.

Matthew Ziegelmann, M.D.
Assistant Professor of Urology

Interests:

  • Peyronie's disease
  • Erectile dysfunction
  • Male sexual dysfunction
  • Male infertility/oncofertility
  • Male hypogonadism and testosterone deficiency

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Advisers and mentors

You will choose a mentor to serve as your advocate in academic, clinical and personal arenas. Academic progress is monitored, and residents with academic and staff potential are identified early and recommended to the Department of Urology.

Visiting professors

Prominent adult and pediatric urologists visit Mayo Clinic each year as visiting professors. Their visits include formal presentations at evening lectures as well as participation in conferences, surgery, and hospital rounds. You are encouraged to take full advantage of these opportunities.