Division of Urology Team

Chief of Urology

Chief of Urology, Rhode Island Hospital and The Miriam Hospital

Mark Sigman, MD has over 20 years of experience in the diagnosis and treatment of urologic and reproductive problems. He is an internationally recognized expert on male infertility and sexual dysfunction. He is chief of urology at Brown University, Rhode Island Hospital and at the Miriam Hospital. He has authored more than 100 publications in the areas of male reproductive medicine and surgery and also has lectured extensively throughout the country on this topic. He is past president of many different societies, including the New England section of the American Urological Association, the Society for the Study of Male Reproduction, and the Society of Reproductive Surgeons.

Urology Specialists

Liza Aguiar, MD, a pediatric urologist, treats newborns, children, adolescents, and young adults affected by a wide range of genitourinary conditions. Dr. Aguiar is specially trained in laparoscopic and robotic urological surgery and is experienced in minimally invasive robotic surgery, which is a growing field in pediatric urology.

Anthony Caldamone, MD, is the Director of Pediatric Urology, Hasbro Children's Hospital, and Professor of Surgery (Urology) and Pediatrics, Hasbro Children's Hospital / Warren Alpert Medical School of Brown University in Providence, Rhode Island. Caldamone has been the Program Director of the urology residency program in Providence since 1990.

Caldamone graduated from Brown University and Brown University School of Medicine in the first graduating class of the modern day school of medicine. He was the first graduate of the medical school to become full professor at the institution. Caldamone did his internship and urology residency training at Strong Memorial Hospital in Rochester, New York from 1975 to 1981. He then did his Pediatric Urology Fellowship at the Children’s Hospital of Philadelphia with John Duckett, MD, from 1981 to 1982. After the completion of his Pediatric Urology Fellowship in 1982, Caldamone then consulted at The Hospital for Sick Children on Great Ormond Street in London.

He has served as the President of the New England Section of the American Urological Association and also served as the Secretary-Treasurer and President of the Society for Pediatric Urology. He is currently Chairman of the Pediatric Subspecialty Certification Exam Committee, Executive Secretary of the Pediatric Urology Advisory Council and a member of the Examination Committee of the American Board of Urology (ABU) since 2005. In 2012, Caldamone was the recipient of the University of Rochester Humanitarian Award

He has been on 14 medical missions to the Middle East, South American, and Bangladesh and has served on the Board of Directors of the Physicians for Peace. 

He has been a visiting professor and invited lecturer (both nationally and internationally) to 53 institutions and 12 countries. He has contributed over 203 articles and chapters and edited 15 books. He is currently the Editor-in-Chief of the Journal of Pediatric Urology and served as past Editor-in-Chief of the Dialogues in Pediatric Urology from 2005 to 2012.

Surgical Oncologist

Boris Gershman, MD, is an assistant professor of surgery (clinical) (urology) at The Warren Alpert Medical School of Brown University.  Dr. Gershman's clinical interests focus on urologic oncology, including the management of prostate, kidney, bladder, and testicular cancer.  He has a broad research interest in comparative effectiveness and health services research, with a particular focus on risk-stratification for urologic malignancies and quality measurement.

Gershman graduated magna cum laude from Brown University and received his medical degree from the Perelman School of Medicine at the University of Pennsylvania. He completed residency training at the Massachusetts General Hospital followed by a Society of Urologic Oncology (SUO) fellowship at Mayo Clinic.  He has received numerous institutional and organizational honors and awards including the Maria L. Caleel Memorial Award for Academic Excellence, the Dr. I. S. Ravdin Memorial Prize in Surgery, the Dr. Spencer Morris Prize, and induction into the Alpha Omega Alpha medical honor society. He serves as a reviewer for multiple journals, and has been recognized as Reviewer of the Year by European Urology.

More about Dr. Gershman's research at Brown.edu

Director, Minimally Invasive Urology Institute; Director, Genitourinary Oncology at The Miriam Hospital

Dragan Golijanin, MD, is a director of the Minimally Invasive Urology Institute and director of Genitourinary Oncology at The Miriam Hospital. He also serves as an associate professor of surgery (urology) at The Warren Alpert Medical School of Brown University. His areas of expertise include prostate cancer, kidney cancer, bladder cancer and testicular cancer. Golijanin is board certified in urology.

Golijanin earned his medical degree at the University of Belgrade. He completed residencies at the University of Rochester School of Medicine, University Clinical Center in Belgrade and Hadassah Medical Center. He completed fellowships in urologic oncology at Memorial Sloan-Kettering Cancer Center and Cornell University and Hadassah Medical Center, and was the first to publish on near-infrared real-time imaging in open laparoscopic and robotic surgery.

Urologist, Men's Health Center

Vincent Harisaran, MD is a urologist at the Men’s Health Center who specializes in erectile dysfunction offering the full range treatments from medications to surgery (prosthetics) for conditions such as premature ejaculation, hypogonadism, and Peyronie’s disease. Harisaran received his medical degree from The Warren Alpert Medical School of Brown University, where he also completed his internship in general surgery and residency in urologic surgery, with a focus on andrology. He conducts research on men’s health and has published and presented on the topics of male infertility, erectile dysfunction and prostate cancer at local and national meetings. He is board eligible in urology.

Director of Minimally Invasive Urologic Surgery

Gyan Pareek, MD, is a director of the Minimally Invasive Urology Institute and director of the Kidney Stone Center at The Miriam Hospital. He is also an associate professor of surgery (urology) at The Warren Alpert Medical School of Brown University. His areas of expertise include kidney stones, prostate cancer and benign prostatic hyperplasia. Pareek is board certified in urology and is a fellow of the American College of Surgeons.

Pareek earned his medical degree from St. George’s University School of Medicine and completed his residency at Lenox Hill Hospital in New York. He also completed his laparoscopy and endourology fellowship at the University of Wisconsin. In 2006, Pareek was part of a team at The Miriam Hospital that performed the first robotic prostatectomy in the state of Rhode Island. He is on the board of directors for University Urology Associates, Bay Area Mobile Medical, and New England American Urological Association and is president of the Rhode Island Urological Society.

Learn more about Dr. Pareek's research on www.Brown.edu »

Urologist

Janice Santos Cortes, MD is a board-certified urologist in the Program for Pelvic Floor Disorders at The Women’s Medicine Collaborative. Dr. Santos also serves as an assistant professor of urology at The Warren Alpert Medical School of Brown University.

Dr. Santos received her undergraduate and medical degrees from the University of Puerto Rico before completing a urology residency at the Albert Einstein School of Medicine, Montefiore Medical Center in New York. She trained in urologic oncology at the University of Miami and Jackson Memorial Hospital in Florida before pursuing a second fellowship in female urology, voiding dysfunction, urodynamics, and neurology at New York-Presbyterian Hospital/Columbia University Medical Center in New York.

A member of the American Urological Association, the American Medical Association, the Society of Women in Urology, the Society for Urodynamics and Female Urology, and the Society of Urologic Oncology, Dr. Santos brings a rich background in urologic medicine to the Women’s Medicine Collaborative.

Dr. Santos’ clinical interests include the medical and surgical treatment of female incontinence, vaginal prolapse, voiding dysfunction, urodynamics and surgical outcomes. She also has a special interest in the treatment of patients with neurogenic voiding dysfunction.

Multidisciplinary Specialty Clinics/Institutes

Female Pelvic Floor Disorders Program

Urologist

Janice Santos Cortes, MD is a board-certified urologist in the Program for Pelvic Floor Disorders at The Women’s Medicine Collaborative. Dr. Santos also serves as an assistant professor of urology at The Warren Alpert Medical School of Brown University.

Dr. Santos received her undergraduate and medical degrees from the University of Puerto Rico before completing a urology residency at the Albert Einstein School of Medicine, Montefiore Medical Center in New York. She trained in urologic oncology at the University of Miami and Jackson Memorial Hospital in Florida before pursuing a second fellowship in female urology, voiding dysfunction, urodynamics, and neurology at New York-Presbyterian Hospital/Columbia University Medical Center in New York.

A member of the American Urological Association, the American Medical Association, the Society of Women in Urology, the Society for Urodynamics and Female Urology, and the Society of Urologic Oncology, Dr. Santos brings a rich background in urologic medicine to the Women’s Medicine Collaborative.

Dr. Santos’ clinical interests include the medical and surgical treatment of female incontinence, vaginal prolapse, voiding dysfunction, urodynamics and surgical outcomes. She also has a special interest in the treatment of patients with neurogenic voiding dysfunction.

Genitourinary Multidisciplinary Oncology Clinic

Jennifer Cunningham, NP
Clinical Director, Radiation Oncology

Thomas DiPetrillo, MD, is clinical director of radiation oncology at Rhode Island and The Miriam hospitals. He is a leading authority on a variety of radiation treatments for cancer, including intensity modulated radiation therapy (IMRT) and high dose rate (HDR) brachytherapy. DiPetrillo is a pioneer in the use of IMRT, a noninvasive procedure that allows physicians to pinpoint delivery of radiation therapy, resulting in better tumor control with less toxicity. He is also an expert in the use of HDR brachytherapy, a treatment that involves the use of a robotic arm to deliver a radioactive “seed” to a tumor. 

DiPetrillo is a graduate of the University of Vermont College of Medicine and completed his residency at New England Medical Center (now Tufts Medical Center). He is an associate professor of radiation oncology at The Warren Alpert Medical School of Brown University, and an adjunct associate professor at Tufts University School of Medicine.

Surgical Oncologist

Boris Gershman, MD, is an assistant professor of surgery (clinical) (urology) at The Warren Alpert Medical School of Brown University.  Dr. Gershman's clinical interests focus on urologic oncology, including the management of prostate, kidney, bladder, and testicular cancer.  He has a broad research interest in comparative effectiveness and health services research, with a particular focus on risk-stratification for urologic malignancies and quality measurement.

Gershman graduated magna cum laude from Brown University and received his medical degree from the Perelman School of Medicine at the University of Pennsylvania. He completed residency training at the Massachusetts General Hospital followed by a Society of Urologic Oncology (SUO) fellowship at Mayo Clinic.  He has received numerous institutional and organizational honors and awards including the Maria L. Caleel Memorial Award for Academic Excellence, the Dr. I. S. Ravdin Memorial Prize in Surgery, the Dr. Spencer Morris Prize, and induction into the Alpha Omega Alpha medical honor society. He serves as a reviewer for multiple journals, and has been recognized as Reviewer of the Year by European Urology.

More about Dr. Gershman's research at Brown.edu

Director, Minimally Invasive Urology Institute; Director, Genitourinary Oncology at The Miriam Hospital

Dragan Golijanin, MD, is a director of the Minimally Invasive Urology Institute and director of Genitourinary Oncology at The Miriam Hospital. He also serves as an associate professor of surgery (urology) at The Warren Alpert Medical School of Brown University. His areas of expertise include prostate cancer, kidney cancer, bladder cancer and testicular cancer. Golijanin is board certified in urology.

Golijanin earned his medical degree at the University of Belgrade. He completed residencies at the University of Rochester School of Medicine, University Clinical Center in Belgrade and Hadassah Medical Center. He completed fellowships in urologic oncology at Memorial Sloan-Kettering Cancer Center and Cornell University and Hadassah Medical Center, and was the first to publish on near-infrared real-time imaging in open laparoscopic and robotic surgery.

Kidney Stone Center

Mary Flynn, PhD, RD, LDN
Director of Minimally Invasive Urologic Surgery

Gyan Pareek, MD, is a director of the Minimally Invasive Urology Institute and director of the Kidney Stone Center at The Miriam Hospital. He is also an associate professor of surgery (urology) at The Warren Alpert Medical School of Brown University. His areas of expertise include kidney stones, prostate cancer and benign prostatic hyperplasia. Pareek is board certified in urology and is a fellow of the American College of Surgeons.

Pareek earned his medical degree from St. George’s University School of Medicine and completed his residency at Lenox Hill Hospital in New York. He also completed his laparoscopy and endourology fellowship at the University of Wisconsin. In 2006, Pareek was part of a team at The Miriam Hospital that performed the first robotic prostatectomy in the state of Rhode Island. He is on the board of directors for University Urology Associates, Bay Area Mobile Medical, and New England American Urological Association and is president of the Rhode Island Urological Society.

Learn more about Dr. Pareek's research on www.Brown.edu »

Jie Tang MD, MPH, is an associate professor of medicine (nephrology) at The Warren Alpert Medical School of Brown University. Tang earned his medical degree from Medical College of Georgia and completed his residency at Emory University Hospitals in Atlanta, Georgia. He also completed a fellowship in nephrology at Massachusetts General Hospital and earned a master of public health degree from Harvard University School of Public Health. Dr. Tang is board certified.

Men’s Health Center

Christy Ciesla, PT, DPT
Urologist, Men's Health Center

Vincent Harisaran, MD is a urologist at the Men’s Health Center who specializes in erectile dysfunction offering the full range treatments from medications to surgery (prosthetics) for conditions such as premature ejaculation, hypogonadism, and Peyronie’s disease. Harisaran received his medical degree from The Warren Alpert Medical School of Brown University, where he also completed his internship in general surgery and residency in urologic surgery, with a focus on andrology. He conducts research on men’s health and has published and presented on the topics of male infertility, erectile dysfunction and prostate cancer at local and national meetings. He is board eligible in urology.

Physician in Chief of Family Medicine

Martin M. Miner, MD has practiced preventive and primary care medicine for more than 28 years and is currently chief of family and community medicine at the Miriam Hospital. He is a fellow of the American Urological Association and the author of more than 75 publications in the areas of erectile dysfunction and cardiovascular disease, benign prostatic hyperplasia and lower urinary tract symptoms in reference to male sexuality, and hormonal replacement therapy in men. Miner is president-elect of the American Society of Men’s Health, associate editor of the Journal of Men’s Health and serves on multiple journal boards and reviews for several publications. He is currently active in several research studies on men’s health, and is the recipient of the Dean’s Teaching Excellence Award in 2003 and 2007. Miner was also honored with the 2012 Men's Health Award from the Massachusetts Medical Society. 

Internist, Men's Health Center

Mark Paulos, MD, is an internist at The Miriam Hospital’s Men’s Health Center. He began his career as associate faculty at Presbyterian-Shadyside Hospital at University of Pittsburgh Medical Center. During his 12-year tenure, he was a leader in preventive health screening and championed access to mental health services. Dr. Paulos joined the Men’s Health Center in 2013 and has a dual appointment in the departments of internal medicine and urology. His practice focuses on the link between sexual health disorders and metabolic and cardiovascular health.

He has co-authored articles on the link between metabolic syndrome, erectile dysfunction and cardiovascular health, and he has written on the metabolic link between testosterone and bone health in men. He is a member of the American Society for Men’s Health and the Sexual Medicine Society of North America. 

Chief of Urology, Rhode Island Hospital and The Miriam Hospital

Mark Sigman, MD has over 20 years of experience in the diagnosis and treatment of urologic and reproductive problems. He is an internationally recognized expert on male infertility and sexual dysfunction. He is chief of urology at Brown University, Rhode Island Hospital and at the Miriam Hospital. He has authored more than 100 publications in the areas of male reproductive medicine and surgery and also has lectured extensively throughout the country on this topic. He is past president of many different societies, including the New England section of the American Urological Association, the Society for the Study of Male Reproduction, and the Society of Reproductive Surgeons.

Minimally Invasive Urology Institute (MIUI)

Director, Minimally Invasive Urology Institute; Director, Genitourinary Oncology at The Miriam Hospital

Dragan Golijanin, MD, is a director of the Minimally Invasive Urology Institute and director of Genitourinary Oncology at The Miriam Hospital. He also serves as an associate professor of surgery (urology) at The Warren Alpert Medical School of Brown University. His areas of expertise include prostate cancer, kidney cancer, bladder cancer and testicular cancer. Golijanin is board certified in urology.

Golijanin earned his medical degree at the University of Belgrade. He completed residencies at the University of Rochester School of Medicine, University Clinical Center in Belgrade and Hadassah Medical Center. He completed fellowships in urologic oncology at Memorial Sloan-Kettering Cancer Center and Cornell University and Hadassah Medical Center, and was the first to publish on near-infrared real-time imaging in open laparoscopic and robotic surgery.

Director of Minimally Invasive Urologic Surgery

Gyan Pareek, MD, is a director of the Minimally Invasive Urology Institute and director of the Kidney Stone Center at The Miriam Hospital. He is also an associate professor of surgery (urology) at The Warren Alpert Medical School of Brown University. His areas of expertise include kidney stones, prostate cancer and benign prostatic hyperplasia. Pareek is board certified in urology and is a fellow of the American College of Surgeons.

Pareek earned his medical degree from St. George’s University School of Medicine and completed his residency at Lenox Hill Hospital in New York. He also completed his laparoscopy and endourology fellowship at the University of Wisconsin. In 2006, Pareek was part of a team at The Miriam Hospital that performed the first robotic prostatectomy in the state of Rhode Island. He is on the board of directors for University Urology Associates, Bay Area Mobile Medical, and New England American Urological Association and is president of the Rhode Island Urological Society.

Learn more about Dr. Pareek's research on www.Brown.edu »

Lauren Pillsbury, MSN, ACNP-BC
Christopher Tucci, MS, RN, BC, CURN

Pediatric Urology

Liza Aguiar, MD, a pediatric urologist, treats newborns, children, adolescents, and young adults affected by a wide range of genitourinary conditions. Dr. Aguiar is specially trained in laparoscopic and robotic urological surgery and is experienced in minimally invasive robotic surgery, which is a growing field in pediatric urology.

Anthony Caldamone, MD, is the Director of Pediatric Urology, Hasbro Children's Hospital, and Professor of Surgery (Urology) and Pediatrics, Hasbro Children's Hospital / Warren Alpert Medical School of Brown University in Providence, Rhode Island. Caldamone has been the Program Director of the urology residency program in Providence since 1990.

Caldamone graduated from Brown University and Brown University School of Medicine in the first graduating class of the modern day school of medicine. He was the first graduate of the medical school to become full professor at the institution. Caldamone did his internship and urology residency training at Strong Memorial Hospital in Rochester, New York from 1975 to 1981. He then did his Pediatric Urology Fellowship at the Children’s Hospital of Philadelphia with John Duckett, MD, from 1981 to 1982. After the completion of his Pediatric Urology Fellowship in 1982, Caldamone then consulted at The Hospital for Sick Children on Great Ormond Street in London.

He has served as the President of the New England Section of the American Urological Association and also served as the Secretary-Treasurer and President of the Society for Pediatric Urology. He is currently Chairman of the Pediatric Subspecialty Certification Exam Committee, Executive Secretary of the Pediatric Urology Advisory Council and a member of the Examination Committee of the American Board of Urology (ABU) since 2005. In 2012, Caldamone was the recipient of the University of Rochester Humanitarian Award

He has been on 14 medical missions to the Middle East, South American, and Bangladesh and has served on the Board of Directors of the Physicians for Peace. 

He has been a visiting professor and invited lecturer (both nationally and internationally) to 53 institutions and 12 countries. He has contributed over 203 articles and chapters and edited 15 books. He is currently the Editor-in-Chief of the Journal of Pediatric Urology and served as past Editor-in-Chief of the Dialogues in Pediatric Urology from 2005 to 2012.