David Fenig, M.D.

Board Certified, American Board of Urology

Columbia/Maple Lawn Office:

Midtown Medical Building
7625 Maple Lawn Blvd., Suite 210
Fulton, MD 20759
Office: 301-725-0134

Silver Spring Office:

3801 International Drive, Suite 310
Silver Spring, MD 20906

Dr. Fenig's Website



  • Co-director, Vasectomy Reversal Center of America
  • Associate Director, Male Fertility, Microsurgery and Sexual Health, Chesapeake Urology 
  • University of Pennsylvania, B.A., summa cum laude
  • University of Pennsylvania School of Medicine, MD
  • New York University School of Medicine, General Surgery Internship
  • New York University School of Medicine, Urology Residency
  • Baylor College of Medicine, Fellowship in Male Reproductive Medicine and Surgery

About Dr. Fenig

Dr. David Fenig is a dynamic, highly experienced male infertility and sexuality specialist who has performed hundreds of vasectomy reversals.   He has a strong research background in male infertility and is on the leading edge of this specialty.

He is one of three microsurgeons at our center, all of whom received their fellowship training at the country's leading program for male reproductive medicine and surgery at Baylor College of Medicine. This makes Dr. Fenig part of an elite group of two percent of board-certified urologists in the U.S. who are fellowship-trained in male infertility and microsurgical techniques.  Nationally, only 600 urologists have this specialty training; in the Mid-Atlantic region, there are less than a dozen of such trained urologic surgeons.

After graduating summa cum laude from the University of Pennsylvania with a bachelor's degree in Biological Basis of Behavior  with a concentration in Neural Systems, Dr. Fenig received his medical degree from the University of Pennsylvania School of Medicine, followed by a general surgery internship and a residency in urology at the New YorkUniversity School of Medicine.

Early in his studies, he developed a passion for male infertility work, doing research at the Children's Hospital of Philadelphia to study the correlation between men born with undescended testicles and their rate of infertility as adults, for which he received a Joseph Stokes Research Foundation Scholarship and the Frank Hinman, Jr. Research Award from the Society of Pediatric Urology.  Dr. Fenig also has done volunteer work in Vietnam as a result of his International Volunteers in Urology Traveling Resident Scholar Award. 

Known by his patients and colleagues as a caring, compassionate and friendly doctor, his goal is to fulfill his patients' expectations by performing successful vasectomy reversals. "My mission is to help couples conceive in as natural a way as possible.  It's personally rewarding to be able to see couples leave my office smiling, knowing the men now have the ability to father a child," he says.

A highly skilled microsurgeon, his successful track record includes performing reversals for patients whose vasectomies were done as long as 20 years ago.  He also has expertise at performing epididymovasostomy, a very complex microsurgery that is required in about 30 percent of vasectomy reversals, when men have a blockage in the vas deferens close to the testicle.  The surgery involves joining the vas deferens to the epididymal tubule in the epdidymis, where the opening may be as small as one fifth of a millimeter.   

Dr. Fenig is on the cutting edge of this procedure, and in January 2012* authored the first medical paper, which provides a nomogram table to calculate the probability that a patient will require an epididymovasostomy at the time of vasectomy reversal.  Predicting this allows for better patient counseling and may further increase your need for a fellowship trained microsurgeon.

All reversals are performed in our state-of-the-art, ambulatory surgical center certified by the Accreditation Association for Ambulatory Health Care (AAAHC).  We utilize the most advanced microsurgical equipment including a cutting-edge Zeiss microscope with which to visualize the microsurgery.  The surgical staff includes specialty-trained nurses and board-certified anesthesiologists.  

Dr. Fenig believes that, "Urologists must be perfectionists in order to perform microsurgical vasectomy reversals because they are delicate procedures, in which the fragile, sperm-transporting vas deferens is reconnected with sutures that can't be seen closely with the naked eye. It is a technically challenging surgery requiring precision." 

That is why Dr. Fenig encourages patients who are searching for the right microsurgeon to perform their vasectomy reversal to choose wisely.  He advises patients to choose a fellowship-trained microsurgeon who performs vasectomy reversal procedures regularly and is considered an expert.  Dr. Fenig states that, "Many urologists will offer to perform a reversal, but are not adequately trained to do so.  It is important for patients to speak to their prospective surgeon about their training and expertise prior to making a consultation appointment."  A fellowship or specialty training allows a surgeon to specialize in a particular procedure or technique, providing a true area of expertise.  There are only a handful of fellowships in microsurgery and male infertility nationally.  Only a select number of urologists have completed this training and are capable of performing a successful vasovasostomy for vasal occlusion from vasectomy and epidiymovasostomy for more complex blockages in the epididymis, which can often occur when a vasectomy is out over fourteen years. 

It is important to ask your prospective surgeon how many reversals they have performed, their personal success rates, how regularly they perform them and if they perform the procedure in a special microsurgery suite.

"Being able to perform microsurgical vasectomy reversals is important to me, because having children is a basic desire of most couples. There is no better feeling than being able to help a couple achieve a pregnancy naturally because a man has had successful vasectomy reversal microsurgery."

Dr. Fenig is widely published, having co-authored numerous publications in peer-reviewed journals and presented at national infertility and sexual medicine conferences.  He has authored book chapters on male infertility and urologic surgery. 

Dr. Fenig is a member of the American Urological Association, the American Society for Reproductive Medicine, Sexual Medicine Society, the Society for Male Reproduction and Urology and the Society for the Study of Male Reproduction.

*Fenig DM, Kattan MW, Mills JN, et al: Nomogram to Preoperatively Predict the Probability of Requiring an Epididymovasostomy During a Vasectomy Reversal;  JUrol 2012, 187, pg. 215