Page Content

Meet The Faculty

The Department of Urology at Mayo Clinic is committed to excellence in patient care, education, and research. We are a busy department that annually performs approximately:

  • 500 ureteroscopic procedures
  • 150 holmium laser enucleations of the prostate
  • 200 percutaneous surgeries
  • 1,200 robotic and laparoscopic surgeries
  • 50 image-guided procedures (for example, shock wave lithotripsy and image-guided ablative procedures)

You participate in clinical care through a preceptorship model.

To facilitate research endeavors, you are granted access to pre-existing databases for prostate cancer, bladder cancer, renal malignancies, and urolithiasis. In addition, faculty members have active National Institutes of Health grants in oncologic diseases, such as prostate cancer, and spore and stone disease (for example, the O'Brien Urology Research Center).

From the program director 

Aaron Potretzke, M.D., Program Director

Welcome! We appreciate your interest in the Endourology and Minimally Invasive Urologic Surgery Fellowship at Mayo Clinic. A fellow in our program has the opportunity to work with several world-class surgeons and academicians. We offer depth and breadth in all of the sub-disciplines in minimally invasive urologic surgery.

Training in the Department of Urology at Mayo Clinic is based on a mentorship model. The fellow spends approximately nine continuous weeks with a designated mentor. The operations and clinical work are specific to one attending surgeon’s practice. The fellow is offered the opportunity to learn and practice the finest details of a given surgery (e.g. robotic partial nephrectomy, robotic prostatectomy, percutaneous nephrolithotomy) in a focused, dedicated experience. Graduating fellows are confident and accomplished as they embark on their own surgical practices.

The mentorship model also allows the fellow to learn how an individual surgeon runs a busy, well-rounded practice — including administrative duties, operating schedule, clinical responsibilities, research activities, and work-life balance.

Fellows in our department have access to robust registries, including those for renal cell carcinoma, prostate cancer, bladder cancer, and upper tract urothelial carcinoma. These registries are maintained prospectively by a dedicated nurse abstractor. The fellow has the opportunity to be as productive as is desired.

The aim of the Endourology and Minimally Invasive Urologic Surgery Fellowship at Mayo Clinic is to provide the fellow with the resources to successfully launch a prosperous career. We are very proud of our program, our department, and our city. We look forward to the opportunity to share our experience with those looking to refine their surgical, clinical, and academic expertise.

With best wishes,

Aaron Potretzke, M.D.
Program Director

Faculty

The program is unique in that you get dedicated time with the faculty members who have diverse backgrounds and clinical foci, such as:

  • Ureteroscopic and percutaneous procedures for stone disease, urothelial carcinoma, and stricture disease
  • Transurethral surgery for benign prostatic hyperplasia (e.g. HoLEP)
  • Image guided percutaneous renal access
  • Laparoscopic and robotic kidney and prostate surgery
  • Metabolic stone management
  • Image-guided therapy for urologic cancers (i.e. ablation)

Core faculty in Endourology, Minimally Invasive Urologic Surgery, and Nephrology

Aaron Potretzke, M.D.

Aaron Potretzke, M.D.

Program Director

Dr. Aaron Potretzke is a minimally invasive endourologist. He specializes in upper tract urothelial carcinoma, renal cell carcinoma, and urolithiasis.

Show more View full profile
George Chow, M.D.

George Chow, M.D.

Assistant Professor of Urology

Dr. George Chow is a minimally invasive upper tract surgeon. He specializes in robotic partial nephrectomy, robotic and laparoscopic nephroureterectomy, and laparoscopic donor nephrectomy.

Show more View full profile
Igor Frank, M.D.

Igor Frank, M.D.

Professor of Urology

Dr. Igor Frank is a minimally invasive lower genitourinary tract surgeon. He specializes in robotic radical prostatectomy, robotic simple prostatectomy, and robotic cystectomy.

Show more View full profile
Kevin Koo, M.D., M.P.H.

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

Assistant Professor of Urology

Dr. Kevin Koo is an endourologist who performs all stone procedures for both the upper and lower tract. He obtains his access to the kidney for percutaneous nephrolithotomy.

Show more View full profile
Kevin Wymer, M.D.

Kevin Wymer, M.D.

Assistant Professor of Urology

Dr. Kevin Wymer is an expert in Holmium Laser Enucleation of the Prostate. He also specializes in the medical and surgical management of urinary stone disease and benign prostatic hyperplasia.

Show more View full profile
John Lieske, M.D.

John Lieske, M.D.

Professor of Medicine

Dr. John Lieske is nephrologist and evaluates and treats patients for metabolic stone disease. Fellows spend time with Dr. Lieske and his colleagues to learn about stone disease management.

Show more View full profile
Derek Lomas, M.D., PharmD

Derek Lomas, M.D., PharmD

Assistant Professor of Urology

Dr. Derek Lomas is fellowship trained in image guided urologic procedures, including ablative therapies for the prostate. He also performs cystoscopic and ureteroscopic procedures.

Show more View full profile

Advisers and mentors

During the fellowship, mentoring is available from all faculty members. You may select a dedicated faculty adviser who will provide comprehensive educational advice and personal support. You meet with your adviser quarterly throughout the year to review progress and career goals, and ensure your educational goals are being met.

Visiting professors

The department hosts three to five guest lecturers each year. These lectureships are arranged educational events frequently scheduled over the course of two days.

You may present clinical cases to visiting professors for additional education opportunities.