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The UCDSOM Division of Urology currently offers two fellowship programs focusing on different areas of subspeciality training. The first fellowship is in Male Reconstruction directed by Dr. Brian Flynn.  The fellowship in Pediatric Urology is directed by Dr. Duncan Wilcox.  Please click on the appropriate tab to obtain additional information on each of the fellowship training programs.

The Male Reconstructive Urology Fellowship at the University of Colorado School of Medicine is a one-year clinical fellowship under the directorship of Brian J. Flynn MD, Associate Professor of Surgery in the Division of Urology. Dr.Flynn started the fellowship in 2008. The original focus was both male and female reconstructive Urology. In 2012 two major things occured. The GURS started a match in Male Reconstructive Urology and we joined in this accrediation. Around the same time Dr. Ty Higuchi joined the program and brought additional expertise in urethral, penile and neurogenic reconstruction as well as adding transitional urology to the mix. Hence the CU Reconstructive Urology fellowship changed the focus of the program from a SUFU based curriculum to a GURS based curriculum. The fellows do have some flexibility on case selection based on their own individual experience, interest and furture job aspirations.   

This clinical fellowship includes a graduated experience focusing on male reconstruction. This includes pre-operative evaluation, intraoperative management and post-operative care. The fellow will be quite familiar with uretero, bladder, urethral, penile reconstructive surgeries, and instrumentation.  The prospective fellow will spend 90% of his/her time functioning as a fellow under the directorship of two faculty members, spending equal time with each faculty member.  The other 10% of his/her time will be spent independently. The fellow will have two of his/her own clinics per month and have the ability to schedule minor cases that come from this clinic.  The fellow will have 1-2 days per month of research time. This time is flexible based on the fellow’s research interest and productivity.  The fellow will attend one to three national meetings per year and present their research activities.

Pre-requisites For Admission 
The fellowship is open to persons who have completed an ACGME-accredited Urology residency training program in the United States, are qualified to obtain a full medical license in the State of Colorado and are board eligible by the American Board of Urology. The applicant must have a letter of support from their Program Director attesting to the successful completion of the urology training program and recommending them for the fellowship. Three additional letters of recommendation are required.

One trainee per year will be accepted into the fellowship training program.

Fellowship training in Male Genitourinary Reconstructive Surgery is now determined according to a match process through the Society of Genitourinary Reconstructive Surgeons and the American Urological Association.  If you are interested in learning more about the match process, please check out the GURS website at:

Please note: Residents/Fellows in University of Colorado training program must be a U.S. citizen, lawful permanent resident, refugee, asylee, or possess the appropriate documentation to allow the resident/fellow to legally train at the University of Colorado School of Medicine.

Learning Objectives 

  1. Management of Urethral Stricture Disease
  2. Male Incontinence Surgery
  3. Bladder Reconstruction
  4. Management of Ureteral Stricture Disease
  5. Penile Reconstruction and Prosthetic Surgery
  6. Reconstruction for Peyronie’s Disease
  7. Management of Neurogenic Bladder
  8. Recto-Urethral Fistula Surgery
  9. Urodynamics 


Overall Program Goals
At the end of this fellowship in Male Reconstructive Urology, the fellow will have obtained knowledge in the core reconstructive urologic procedures. The fellow will be knowledgeable especially in the following areas:


Male Reconstructive Surgery

 - Management of urethral stricture disease including urethroplasty and substitution urethroplasty using grafts and flaps (both local flaps as well as extra-genital flaps)

 - The management of male stress urinary incontinence and proficiency in artificial urinary sphincter and male sling implantation

 - Fellow will be proficient in management of urethro-cutaneous as well as rectal-urethral fistula surgery


Bladder and Ureteral Reconstruction

 - Fellow will demonstrate knowledge in ureteral reconstruction and be adept in the full array of reconstructive procedures including ureteral re-implantation, uretero-ureterostomy, transuretero-ureterostomy, ileal uretero substitution, boari flap, and pyeloplasty (both open and laparoscopic)

 - Bladder reconstruction including bladder augmentation, creation of catherizable urinary stomas, urinary diversion


The fellow will be involved in all related clinical research activities. The fellow will be able to select three (3) ongoing projects to be directly involved in. The expectations are that these projects will be completed at years end in the form of a manuscript that is prepared for publication in a peer-reviewed journal. Additionally, the research will be presented at a local as well as a national urologic meeting.


Furthermore, the fellow is encouraged to develop one or two projects independently and be mentored by the Program Director on these projects with similar goals in terms of publication and presentation. The fellow will be provided with a broad array of ongoing projects that are pertinent to the fellowship training in reconstructive urology and from these will be expected to select his topics. 


Program Summary
In short, the fellowship is a mix of major abdominal reconstructive surgery as well as male urethral and penile reconstruction.  Dr. Flynn performs approximately 400 cases per year. The fellow will participate in approximately half of these cases, specifically the cases involving male reconstruction. Starting in 2013, the fellow will have an opportunity to participate in female urology cases but this will no longer be part of the core curriculum. These cases occur primarily at the University of Colorado Hospital but occasionally at affiliated hospitals including Childrens Hospital Colorado, Denver Health Medical Center.  


In July 2012 Dr. Ty Higuchi joined our program. Dr. Higuchi is trained at the Mayo Clinic and Cleveland CLinic and brings new perspective to CU Reconstructive Urology. I expect the fellow to spend equal time with both Dr. Higuchi and myself.  


Additionally, the fellow will have attending privileges and will have their own clinic (2-3 clinics per month) and cases of his/her own where he/she will function as the staff (approximately 4-8 cases per month). Also, as the year progresses he/she will function as the staff on combined cases. (For example the fellow harvests the graft while I work on the urethra, or vice versa.) We do a number on large reconstuctive cases (3-5 per month). In such cases, the fellow will be the attending for a significant portion of the procedure or even all of the procedure if he/she is capable (after the 3rd month of the year).  In the neurogenic bladder patient, the fellow will do the augmentation while I place a sling and we will then perform the monti tube or mitrofanoff together. 


Feel free to call me on my cell (720-394-6481) or email for more information. 


Brian J. Flynn, M.D.
Director of Urogynecology, Reconstructive Urology and Urodynamics
Associate Professor of Surgery/Urology
University of Colorado Denver



Useful websites


 Fellow Roster

Medical School
​2015-2016 ​Stephen A. Blakely, MD ​Univ. of Maryland ​SUNY Upstate Medical Univ. ​​TBD
​2014-2015 ​Kirk M. Anderson, MD ​Loma Linda Univ. ​Loma Linda Univ. Sacramento, CA
2013-2014​ ​Andrew P. Windsperger, MD ​University of Minnesota ​University of Kansas



Ketul S. Shah, MD
Univ. of Mumbai, Bombay,  India
Ohio State Univ.
Asst. Professor
Ohio State Univ.
Dmitriy Nikolavsky, MD
Wayne State Univ.
Beaumont Hosp.,
Royal Oak, MI
Asst. Professor
Univ. of Syracuse
David A. Hadley, MD
Loma Linda Univ.
Univ. of Utah
Asst. Professor
Loma Linda Univ.
Christopher R. Knopick, MD
Northwestern Univ.
Wayne State Univ.
San Francisco, CA
Ryan P. Terlecki, MD
Wayne State Univ.
Wayne State Univ.
Asst. Professor
Univ. Wake Forest


Applications for a fellowship position beginning July 1, 2017 must be submitted through the Male Genitourinary Reconstruction Fellowship Match through the AUA.  Information on the application process can be found at the GURS website at​.   

In addition to applying on-line, applicants are required to forward a copy of their GURS application and all supporting documentation via e-mail to the Fellowship Coordinator, Beth Musser, at  Required documentation includes:

  • Copy of GURS application
  • Curriculum Vitae
  • Medical School Transcripts
  • Letter of Recommendation from Residency Program Director
  • Three (3) Additional Letters of Recommendation

Interviews will be scheduled in March and April, 2016.  Please feel free to contact Beth Musser via e-mail at with questions or to request additional information.

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The Fellowship in Pediatric Urology has been accredited by the ACGME and the University of Colorado School of Medicine Office of Graduate Medical Education.

The Pediatric Urology Fellowship Program seeks to recruit the best candidates and provide them the educational foundation for a successful career. We seek to prepare our fellows for their lifelong educational and professional journey in Pediatric Urology by:

  • Sharing knowledge from the dedicated faculty
  • Developing surgical and patient care skills in an environment fostering progressive responsibility in patient management under appropriate supervision
  • Teaching that will help them appraise and improve their own patient care, assess and assimilate new scientific knowledge, and contribute through research to the science of the profession
  • Demonstrating interpersonal and communication skills necessary to effectively interact with patients, peers, and others
  • Promoting professional ideals and adherence to ethical principles
  • Preparing future Pediatric Urologists to effectively interact in an increasingly complex health care system
  • Graduates will be expected to sit for the subspeciality exam in Pediatric Urology, this requires the successful completion of a two year ACGME approved Pediatric Urology fellowship

Specific Goals and Objectives — Year 1


The first year of the program is ACGME approved and spent entirely involved in clinical care. The aim of this year is to prepare the resident for a career either in Academic or Private Practice in Pediatric Urology. We are concentrating on producing ethically and morally considerate doctors who have excellent clinical skills and experience in their chosen field.


At the end of this clinical year, you should be able to:

  • Perform general and disease specific history and physical examinations.
  • Order appropriate radiological investigations and interpret them, in order to make an accurate clinical diagnosis
  • Decide on the most appropriate treatment management for the child, including the timing of and nature of surgical intervention
  • Counsel and educate parents and patients about their medical condition and the treatment options available
  • Appropriately take a consent from families and provide appropriate information to the patient
  • Understand the role of urodynamics and biofeedback
  • Perform competently the majority of Pediatric Urological procedures, including but not limited to:
    • Penile Surgery — Circumcision, Hypospadias and Epispadias
    • Groin Surgery — Hydroceles, Hernia, Orchiopexy, Varicocelectomy, Exploration for Torsion
    • Kidney Procedures — Pyeloplasty, Heminephrectomy, Nephrectomy
    • Ureteric Procedures — Ureteric anastomosis, Ureteric Reimplant
    • Bladder Procedures — Bladder Augmentation, Appendico-vesicostomy, Bladder diverticulum, Urachal excision
    • Laparoscopic and Robotic Procedures — Orchiopexy, Nephrectomy, Heminephrectomy, Pyeloplasties
    • Endoscopic Procedures — Cystoscopy , Ablation Posterior Urethral Valves, Excision Ureteroceles,Ureteroscopy
  • Manage patients with stone disease
  • Manage patients with oncological problems including: Wilms tumor, Rhadomyosarcoma and Testicluar tumors
  • Manage pre- and post-operative patients
  • Understand surgical complications and appropriately manage them
  • Critically review and evaluate newly presented and published research
  • Present at a National Meeting
  • Produce a manuscript for publication
  • Perform a departmental quality improvement project that may be combined with a research project
  • Accurately code Pediatric Urology work for reimbursement


Specific Goals and Objectives — Year 2


The second year of the residency is not approved by the ACGME, but it is required by the AUA who since 2008 has made a 2-year fellowship mandatory for taking the subspecialty exam. This second year will be mainly spent in research. The aim of this year is to introduce you to laboratory and clinically based research, under the careful guidance of the faculty. This will enable you to critically appraise published research and to design and complete research projects. It is also planned that the fellow will spend one day a week in clinical practice, where the fellow will be able to have more autonomy but will always have attending back up. The aim is to ease the transition from resident to independent physician.


  • Design a specific laboratory based research project or clinical research project
  • Collect and correctly analyze data for a research presentation
  • Present using Power point at least one project at Grand Rounds
  • Present using Power point one project at a National Meeting.
  • Produce and submit a manuscript for publication in a peer-reviewed journal
  • Transition into an independent physician


Current Research

Clinical studies include:

  • Racial differences in care provided for infants born with prenatally detected hydronephrosis
  • Complications following commonly performed pediatric urology procedures
  • Transitional care for spina bifada patients into adulthood

Laboratory Studies include:

  • Effect of bladder obstruction on bladder development
  • Cross talk and sensitization of bladder and bowel neural pathways
  • Urine biomarkers for urinary obstruction


Pediatric Urology Team

The Pediatric Urology Team is a group of dedicated health care professionals who provide exceptional care for pediatric and adolescent paatients with urologic dysfunction. Please click on the names below to see their individual bios.

Group photo of Pediatric Urology team

The Pediatric Urology team has a very full practice including general pediatric urology clinics, specialty clinics, surgical cases, teaching, and research. Click here to view a block schedule of the Pediatric Urology providers.


2015-2017  Alonso Carrasco Jr., MD

2014-2016   Brian T. Caldwell, MD

2013-2015  Erin C. Grantham, MD

2012-2014   David J. Chalmers, MD

2011-2013   Amy Hou, MD

How to apply to the Pediatric Urology Fellowship

Click here to access the Pediatric Urology Fellowship Universal Application Form. Applications are now being accepted for a fellowship beginning July 1, 2018 and should be e-mailed to the Program Director, Duncan Wilcox, at

Deadline for applications is March 1st 2017. One-day interviews will be scheduled on April 7th and 28th. Interested applicants are expected to register for the Pediatric Urology Fellowship Match through the American Urological Association. Our AUA Pediatric Fellowship Program Match Number is #00000611. Additional information on the match can be found on the AUA website.

If you need additional information or have questions regarding the Pediatric Urology Fellowship, please contact the Fellowship Coordinator, Melissa Gray at 720-777-6846.