RGH Urology - Our Team

Supported by a highly skilled team of physician assistants and nurse practitioners, our board-certified urologic surgeons and physicians are experts in the field and are dedicated to providing the highest level of care for our patients, their families and our referring physicians—from preoperative care through postoperative recovery and beyond.

Surgeons

Dr. Ashman earned his medical degree from the University of Maryland. He completed a rotating internship and residency in surgery at Harrisburg Hospital and a residency in urology at the University of Maryland Medical Center. Dr. Ashman is board certified in urology and is a Clinical Associate Professor in the department of urology at the University of Rochester.

Melanie Butler, MD
phone: 585.232.2980

Dr. Butler is a graduate of Canisius College in Buffalo, NY, and earned her medical degree from the University at Buffalo's School of Medicine and Biomedical Sciences. She previously served as an attending physician in Urology at both the Center for Urology in Rochester, NY, and at Syracuse Urology Associates. Her professional memberships include the American Urological Association, the Society of Women in Urology and the Society of Endourology. Dr. Butler is establishing and building a practice specifically focused on providing the highest level of urologic care for women. Working with Urology Associates of Rochester's providers and staff, she is expanding and enhancing the practice's state-of-the-art services and therapies for women's urology health issues. 

John Cannon, MD
phone: 585.244.8110

Dr. Cannon is a board-certified diplomat of the American Board of Urology. He graduated from the University of Rochester School of Medicine and Dentistry in 1987 and completed two years of residency at Strong Memorial Hospital in General Surgery and four years of training in Urologic Surgery at the University of Rochester. Dr. Cannon is on the teaching faculty at the University of Rochester and is a member of the American Urological Association, Monroe County Medical Society, and Christian Medical and Dental Association. He founded this urology practice in 1993 and is committed to providing state-of-the-art services through ongoing education and training.

Jimena Cubillos, MD
phone: 585.922.4719

Dr. Cubilllos was born in Bogota, Colombia and emigrated to the United States as a small child. She received her Bachelor of Arts degree in Religion and her Doctorate in Medicine, both from the University of Rochester. In medical school, Dr. Cubillos participated in basic nephrologic research, with her clinical interests gravitating to surgery and caring for children. Following surgery and urology residencies at Mount Sinai School of Medicine in New York City, she completed a two-year fellowship in pediatric urology at Long Island Jewish/Schneider Children's Hospital, serving as attending pediatric urologist at Metropolitan Hospital and Beth Israel Medical Center in New York City.

Dr. Cubillos has an expertise in minimally invasive, laparoscopic and robotic pediatric urology. She is fluent in Spanish, as well as American Sign Language and is passionate to improve outreach to both of these communities.

David Dever, MD
phone: 585.232.2980

Dr. Dever is a graduate of Marquette University in Milwaukee, Wisconsin. He received his medical education at Albany Medical College and served as a surgical resident at the University of California at Irvine, where he worked to develop urodynamic evaluation for the incontinent patient. Dr. Dever completed his urologic training at the University of Rochester and is board certified. He has pioneered several procedures, including transrectal ultrasound for prostate biopsy, laser technology in urologic care, and cryoablation for the treatment of prostate cancer. 

Dr. DiMarco is currently a Clinical Associate Professor at the University of Rochester School of Medicine and Dentistry, the Urology Residency Program Director at Rochester General Hospital and former Chief of Urology at the Genesee Hospital. He has published several articles and his professional associations include the American Urological Association and the Monroe County Medical Society. Dr. DiMarco’s areas of special interest include vasectomy, benign prostatic hypertrophy, kidney stones and urologic cancers.

Laurence A. Donahue, MD
phone: 585.232.2980

Dr. Donahue is a graduate of Colgate University in Hamilton, NY. After studying for a master's degree in biochemistry at the University at Buffalo, The State University of New York, Dr. Donahue received his medical degree from SUNY Upstate Medical Center in Syracuse, NY. He served as an intern and surgical resident at Millard Fillmore Hospital in Buffalo, NY, and completed his urology residency at the University of Rochester Medical Center. He also received post-graduate training in prostate ultrasound, cryosurgical ablation therapy and brachytherapy (radiation seed implant) for the treatment of prostate cancer. Dr. Donahue is board certified.

Together with Dr. Dever, Dr. Donahue pioneered the use of laparoscopy in the treatment of both benign and malignant diseases of the urinary tract. Dr. Donahue has a special interest in the treatment of prostate cancer and bladder cancer, as well as kidney stone disease.

Louis Eichel, MD
phone: 585.227.4000

Dr. Eichel is the Chief of the Rochester General Division of Urology. He is a graduate of the University of Rochester School of Medicine and Dentistry. Board certified in urology, he completed his residency at the University of Rochester and completed two years of specialized fellowship training in laparoscopy, endourology and robotic surgery at the University of California, Irvine.

Dr. Eichel regularly teaches several postgraduate courses on advanced laparoscopic and robotic urologic surgery and has published numerous articles, book chapters and teaching videos in these areas. A recipient of the Pfizer Scholars in Urology Award, Dr. Eichel serves as an expert reviewer for the Journal of Urology and the Journal of Endourology, for which he has earned the honor of “Top Reviewer.” His professional memberships include the Endourological Society, the Society of Laparoendoscopic Surgeons and the American Urological Association.

Abraham A. Glazer, MD, FACS
phone: 585.227.4000

Board certified in urology, Dr. Glazer is a graduate of Brighton High School and completed his premedical education at Columbia University and his medical education at Cornell University. He completed his urology residency at the Cleveland Clinic and a fellowship in urinary incontinence at Sunnybrook Hospital, University of Toronto. Dr. Glazer is a clinical associate professor at the University of Rochester School of Medicine and Dentistry, a fellow of the American College of Surgeons, and a member of the American Urological Association. His areas of special interest include treatment of urinary incontinence, laser surgery for the treatment of kidney stones and BPH, and robotic surgery for the treatment of urologic cancers.

William Guthinger, MD
phone: 585.271.2602

Dr. William Guthinger earned his medical degree from Union University Albany Medical College in 1973 and has almost 40 years of experience. He completed his urology internship and residency at Strong Memorial Hospital, University of Rochester Medical Center. Dr. Guthinger is board certified in urology by the American Board of Urology.

William Hulbert, MD
phone: 585.922.4719

Dr. Hulbert earned his medical degree and completed his residency in urology from the University of Rochester School of Medicine and Dentistry. He did his internship and residency training in surgery at the University of Louisville Hospital and completed his fellowship in pediatric urology at the Children's Hospital of Philadelphia. Dr. Hulbert is board certified in both urology and pediatric urology and is an Associate Professor in the department of urology and pediatrics at the University of Rochester. 

Robert Mevorach, MD
phone: 585.922.4719

Dr Robert A. Mevorach received his medical degree from the University of Rochester. After completing his Urological Surgery training at Strong Memorial Hospital in 1991, he became the the Chief of Urology at the Pensacola Naval Hospital where he served until the fall of 1992 when he began his Pediatric Urology Fellowship training under Drs. Emil Tanagho and Barry Kogan at the University of California San Francisco. Graduating in 1994, CDR Mevorach served as Chief of Pediatric Urology at the San Diego Naval Hospital until 1996. Until 1999, he served as Chief of Pediatric Urology and Assistant Department Head of Urology at Portsmouth Naval Hospital. Dr. Mevorach is an Associate Professor of Urology and Pediatrics at the University of Rochester. He pursued and achieved Specialty Board Certification in Pediatric Urology in 2009 advancing his certification beyond his Board Certification in Urology since 1993.

Gregory J. Oleyourryk, MD
phone: 585.336.5320

Board certified in urology, Dr. Oleyourryk completed his undergraduate training at Cornell University, received his medical education at Cornell Medical College, and completed his residency training at the University of Rochester School of Medicine and Dentistry.

A clinical associate professor and Chief of Urology for Unity Health Systems, Dr. Oleyourryk belongs to the Society of Laparoendoscopic Surgeons, the American Urological Association and the Endourological Society. His special interests include minimally invasive treatment of kidney and prostate disease, including brachytherapy and robotic surgery. 

Ronald Rabinowitz, MD
phone: 585.922.4719

Dr. Ron Rabinowitz received his medical degree from the University of Pittsburgh in 1968. He did his surgery training at the Hospitals of the University Health Care Center of Pittsburgh from 1968-1970, followed by two years on active duty in the U.S. Air Force from 1970 to 1972, performing general surgery, pediatric surgery, gynecology and obstetrics. Dr. Rabinowitz returned to the University of Pittsburgh for his urology residency, which included a year of pediatric urology at the Children's Hospital of Pittsburgh. He completed a fellowship in pediatric urologic surgery at the Hospital for Sick Children, Toronto, in 1976. He has been a faculty member and Chief of Pediatric Urology at the University of Rochester for 35 years. He is presently Professor of Urologic Surgery, Professor of Pediatrics and Associate Chair of the Department of Urology at the University of Rochester School of Medicine and Dentistry. He is a renowned expert in the field of pediatric urology and a diplomat of the American Board of Urology, with subspecialty certification in pediatric urology. He has authored or co-authored more than 180 scientific articles and textbook chapters.

Dr. Rabinowitz has been Chair of the American Academy of Pediatrics Section on Urology, Secretary and President of the Northeastern Section of the American Urological Association, a member of the Board of Directors of the American Urological Association and a member of the American Board of Urology Written Examination Committee. He is presently Historian for the Northeastern Section of the American Urological Association and an Oral Examiner for the American Board of Urology. Dr. Rabinowitz’s clinical interests include minimally invasive treatment of vesicoureteral reflux, along with management of cryptorchidism, hydronephrosis and penile deformities. 

Frederick Tonetti, MD
phone: 585.336.5320

Board certified in urology, Dr. Tonetti completed his undergraduate education at Cornell University, his medical education at the State University of New York at Buffalo School of Medicine, and his urology residency at the University of Rochester School of Medicine and Dentistry. A clinical associate professor, he is a past president of the Rochester Academy of Medicine and is a member of the New York State Medical Society, the Monroe County Medical Society and the Rochester Academy of Medicine, where he served on the board of trustees. He has served and continues to serve on a number of medical committees.

Dr. Tonetti's special interests include bladder and prostate cancer treatments. He has extensive experience in prostate radioactive seed implantation and is currently using innovative technologies such as cryoablation therapy for the prostate, as well as robotic surgery.

John Valvo, MD, FACS
phone: 585.227.4000

Board certified in urology, Dr. Valvo is a graduate of the State University of New York at Buffalo School of Medicine and completed his urology residency at the University of Rochester School of Medicine and Dentistry. A member of the Society of Laparoendoscopic Surgeons, a Fellow of the American College of Surgeons, and a diplomat of the American Board of Urology, Dr. Valvo is also a clinical associate professor at the University of Rochester School of Medicine and Dentistry and Executive Director of the Polisseni Center for Robotic and Minimally Invasive Surgery at Rochester General Hospital. His special interests include robotic and minimally invasive urologic surgery and men's health issues.