Paul A. Merguerian, MD, MS

Paul A. Merguerian, MD, MS

Urology, Differences in Sex Development, Developmental Pediatrics, Reconstructive Pelvic Medicine, Prenatal Diagnosis and Treatment

On staff since October 2011

Children's Title: Division Chief, Urology; The Dr. Michael Mitchell Endowed Chair in Pediatric Urology

Academic Title: Professor of Urology University of Washington

Research Center: Center for Clinical and Translational Research

    • Sarah Lebanon, NH 02.22.19

      I saw Dr. Merguerian from the time I was 3 years old until I was 18. He consistently provided the most compassionate care I have ever received from a physician. He always made sure that I understood my condition and what it would mean for the future. My mother still talks about him to this day. He always reassured her and made sure it was clear I was getting the best medical care for my ureter blockages.

    • Peter Oshawa, Ontario, Canada 11.29.17

      My son was one of Dr. Merguerian's early patients at Sick Kids in Toronto. At four months, he had had a surgery to correct a right upper pelvic junction blockage, which unfortunately was unsuccessful. At nine months, Dr. Merguerian performed another surgery on his right kidney, which was successful. While it has been many years now, I've never forgotten Dr. Merguerian's compassion, skill and dedication in the care of my son. For that, I will forever be grateful. Dr. Merguerian gave my son an opportunity to live a normal life, which is a priceless gift. It may interest you to know he's recently graduated college as a Law Clerk. Also, his older brother has often mentioned how affected he was by the dedication of the entire staff at Sick Kids, which has led to him pursue a B. Sc. in Microbiology and Molecular Chemistry. He will graduate this coming spring as a Dean's List student and as the recipient of numerous academic and citizenship awards. He will be writing the MCAT exam with a goal of becoming a doctor himself. My son’s younger brother is in his third year in the Co-op Computer Science program at Waterloo University and his youngest brother is finishing Grade 12 with a 99.5% average in a full academic sciences curriculum. His goal is to follow his brother to Waterloo Computer Science. While I'm obviously proud of each of my sons accomplishments, I'm always mindful of the impact the time spent at Sick Kids has had on their lives. To see and experience the passion of each and every person associated with that amazing institution has been central to their approach to academics and to life. For all of your service to our family, Dr. Merguerian, please accept my thanks.

    • Rick Tacoma, WA 04.04.17

      Dr. Merguerian helped my family and we appreciate what he did. From the get go he was easy to reach and to the point. He saw us just a couple days after our diagnosis. He was calm, knowledgeable and most importantly removed my son's kidney and tumor in a safe way. We knew that most of the time these tumors are cancerous, but Dr. Merguerian was confident it wasn't, but only pathology could tell. During our one week wait, his words were reassuring. We were very lucky as the Dr. was right. However, if it was cancerous, I had full trust in Dr. Merguerian and his teams decision. Dr. Merguerian is a true professional and not arrogant as were his team of folks that worked on my son.

    • Gopal Bellevue, WA 11.03.15

      We moved to Bellevue from another state and I called to Seattle children's hospital and explained the Urine Reflux problem my son has. They suggested few available doctors finally I approached Dr. Merguerian. I don't know the name before, met him twice with appointments. He explained clearly what could be the condition after 6 months or 1 year if we continue using the medication what we were using. Finally we opted for a surgery suggested by Dr.Merguerian. He told us that everything will be alright. That went really well and my Son got recovered very soon. Based on my interaction with few doctors in my home country and Dr.Merguerian I can definitely say Dr.Mergerian is different and he is Outstanding. Dr.Merguerian, his staff and Staff at Seattle Children's Hospital took care of my Son very well.

    • Scott Seattle, WA 03.18.14

      We've all met really good doctors. They're good, they know it, and they act like it. Dr. Merguerian is on a different level. He's SO good, that he doesn't need to show it. You can tell how brilliant he is very quickly just from the way that he talks and carries himself. For such a good doctor to show the compassion he has shown for both our son and our family throughout the process has made a lasting impression. He has taken the time to thoroughly explain the procedures and answer all of the questions that we have. We feel incredibly fortunate and thankful that we happen to live in the city where he works.

    • Erin Manchester, NH 08.20.13

      Dr. Merguerian is a highly skilled, compassionate doctor who was able to take our child from a "scary place" following several urethral reconstructions with complications and poor outcomes, which were performed at a top rated hospital by a different surgeon, and "fix" the problems. Dr. Merguerian allowed us (parents) to ask questions without getting defensive or frustrated and gently reassured us throughout the years he cared for our child. We were deeply saddened to learn that Dr. Merguerian was moving out of our area and would not be able to follow our child further, however we continue to be thankful for the highly skilled and caring service he provided while he was in the Northeast region.

    • Harvest Newbury, Vermont 11.20.11

      Dr. Merguerian is a fantastic Doctor who has saved our daughter's life from when she was born August 29, 2005 to current. He has performed many surgeries and reconstructions on our daughter from her cloaca anomaly, repairing of her fistula to bladder surgery and many more. He worked hard to get Rylie to a state were she could function and be as independent as possible. He is very caring and takes pride in his work. We highly recommend Dr. Merguerian. Your child will be in good hands. If Rylie needed another major surgery we would travel across county just to have him perform the surgery on our daughter.

    • Megan Winchester, NH 10.19.11

      Dr. Merguerian is an amazing surgeon with a very steady hand. He has performed 3 surgeries on my son while he in practice in Lebanon, NH at DHMC. These surgeries were for my son's epispadias fix, initial closure for BLADDER EXSTROPHY, and hernia repairs. Your child will be in good hands with Dr. Merguerian. :)

  • Award Name Award Description Awarded By Award Date
    SEATTLE'S TOP DOCTOR - 2019 Seattle Magazine 2019
    SEATTLE'S TOP DOCTOR - 2018 Seattle Magazine 2018
    SEATTLE'S TOP DOCTOR - 2017 Seattle Magazine 2017
    Seattles Top Doctor 2016 Seattle Met Magazine 2016
    Newsweek Health: Top Cancer Doctors 2015 Newsweek 2015
    U.S. News Top Doctor U.S. News and World Report 2012
    Third Prize Clinical Science Research Award American Academy of Pediatrics 2009
  • Manuscripts in Refereed Journals

    • Merguerian PA, Sverisson E, Herz DA, McQuiston L
      Evaluation of Urinary Tract Infections in Children: What is the Evidence?
      Curr Urol Rep, 2010 : 11(2)98-108
    • Merguerian PA, Van Bibber M, Herz DA, McQuiston L
      Variation among pediatric urologist and across two continents in antibiotic prophylaxis and evaluation of prenatally detected hydronephrosis: A survey of American and European pediatric urologists
      J Urol, 2010 : 1841710-1715
    • Herz DA, McQuiston L, Merguerian PA
      Five year prospective study of DMSA imaging in children with febrile urinary tract infections: Proof that the top-down approach works
      J Urol, 2010 : 1841703-09
    • Merguerian PA, Taenzer A, Knoerlein K, McQuiston L, Herz DA
      Variation in the management of case scenarios of duplex system intravesical ureteroceles: A survey of pediatric urologists
      J Urol, 2010 : 1841625-30
    • Landau EH, Gofrit ON, Pode D, Jurim O, Shenfeld OZ, Duvdevani M, Gross EM, Merguerian PA, Katz R
      Bladder neck closure in children: a decade of follow up
      J Urol, 2009 Oct. : 182(4 Suppl)1797-801

    Other Publications

    • Merguerian PA
      Should Geometric Mean Calculation of Differential Renal Function be Used When Evaluating Children with Moderate to Severe Hydronephrosis?
      26549548 The Journal of urology, 2016 Feb. : 195(2)247-8
    • Akhavan A, Richards M, Shnorhavorian M, Goldin A, Gow K, Merguerian PA
      Renal cell carcinoma in children, adolescents and young adults: a National Cancer Database study.
      25451825 The Journal of urology, 2015 April : 193(4)1336-41
    • Akhavan A, Richards M, Shnorhavorian M, Goldin A, Gow K, Merguerian PA
      Renal Cell Carcinoma in Children, Adolescents and Young Adults: A National Cancer Database Study.
      25451825 The Journal of urology, 2014 Nov. 4
    • Akhavan A, Shnorhavorian M, Garrison LP Jr, Merguerian PA
      Resource utilization and costs associated with the diagnostic evaluation of nonrefluxing primary hydronephrosis in infants.
      24704116 The Journal of urology, 2014 Sept. : 192(3)919-24
    • Merguerian PA
      Commentary to "Does Bladder Augmentation Negatively Affect Renal Transplant Outcome in PUV Patients?"
      Journal of Pediatric Urology, 2014 March 5
    • Akhavan A, Merguerian PA, Grady RW, Disandro M, Shnorhavorian M
      Digital photographic measurement in hypospadias: Validation and comparison to intraoperative measurement.
      24291248 Journal of pediatric urology, 2013 Nov. 7
    • Hsi RS, Dearn J, Dean M, Zamora DA, Kanal KM, Harper JD, Merguerian PA
      Effective and organ specific radiation doses from videourodynamics in children.
      23707437 The Journal of urology, 2013 Oct. : 190(4)1364-9
    • Merguerian PA
      Editorial Comment.
      23688644 The Journal of urology, 2013 May 18
    • Davenport MT, Merguerian PA, Koyle M
      Antenatally diagnosed hydronephrosis: current postnatal management.
      23325322 Pediatric surgery international, 2013 March : 29(3)207-14
    • Su R, Adam M, Fechner P, Badaru A, Ramsdell L, Merguerian P, Shnorhavorian M
      External Masculinization Score (EMS) and the Success of Genetic Testing in a Cohort of 46, XY DSD Patients
      Podium, 1st Annual GME Research Day, Top Ten finalist research presentation, 2013
    • Merguerian PA
      Editorial comment.
      22910251 The Journal of urology, 2012 Oct. : 188(4 Suppl)1498; discussion 1498-9
    • Merguerian PA
      Commentary to 'short-term outcome of mild isolated antenatal hydronephrosis conservatively managed'.
      22386117 Journal of pediatric urology, 2012 April : 8(2)134
    • Su R, Merguerian P, Grady R, Shnorhavorian M
      Surgical Hypospadias After Exstrophy (SHAE): Management and Outcomes
      Presentation, Northwest Urological Society Annual Meeting, Seattle, Washington, 2012
    • Paul A. Merguerian, MD, MS, 45. Su R, Merguerian P, Hidalgo J, Grady R, Lendvay T, Shnorhavorian M
      Long-term Lower Urinary Tract Outcomes in Boys After Early Treatment of Posterior Urethral Valves
      Poster, American Academy of Pediatrics, New Orleans, Louisiana, 2012
    • Merguerian PA
      Editorial comment.
      21172703 The Journal of urology, 2011 Feb. : 185(2)681; author reply 681
    • Merguerian PA
      Editorial comment.
      20850823 The Journal of urology, 2010 Nov. : 184(5)2121; discussion 2121-2

  • Presentations Title Event Location Date
    Evaluation and Management of Cloacal Anomalies Urology Symposium Yerevan, Armenia July 3, 2014
    Safety initiatives at Seattle Childrens Hospital Dartmouth College - The Dartmouth institute Hanover, NH April 17, 2014
    Methodology Review - Evidence Based Journal Club American Urological Association, Office of Education Linthicum, MD Jan. 1, 2014
    Management of Neurogenic Bladder Arabkir Medical Center Yerevan, Armenia Oct. 2013
    Visiting Professorship Arabkir Medical Center for Children Yerevan, Armenia Oct. 1, 2013 - Oct. 9, 2013
    Quality of hypospadias outcome articles Fall Congress Society of Pediatric Urology Las Vegas, NV Sept. 19, 2013
    Value of treating vesicoureteral reflux Societe Internationale DUrologie Vancouver, BC Sept. 10, 2013
    Utilizing Toyota Production System methodology with Continuous Process Improvement to enhance value of a voiding dysfunction clinic Society of Pediatric Urology San Diego, CA May 5, 2013
    Management of Prenatally Diagnosed Hydronephrosis Pediatricians and Family Practice Physicians Tri Cities, WA May 3, 2013
    Visiting Professorship Arabkir Medical Center for Children Yerevan, Armenia May 1, 2013 - May 12, 2013
    An Example of QI Processes in the Urology Residency Program University of Washington School of Medicine Seattle, WA March 22, 2013
    An Example of QI Processes in the Urology Residency Program UW School of Medicine Seattle, WA March 22, 2013
    Management of Antenatal Hydronephrosis and Pyeloplasty Societe Internationale DUrologie Fukuoka, Japan Oct. 1, 2012
    Plenary Session: Antibiotic prophylaxis for antenatal hydronephrosis American Urological Association Atlanta, GA May 20, 2012
    Reviewing the reviewer: How to review a journal article Society for Fetal Urology Atlanta, GA May 18, 2012
    Current Guidelines for Evaluation and Management of Urinary Tract Infections Valley Medical Center Auburn, WA Jan. 16, 2012
    Evaluation and management of urinary tract infections in children Rutland Regional Hospital Grand Rounds Rutland, VT Sept. 10, 2009
    Update in Pediatric Urology Elliot Hospital Grand Rounds Manchester, NH June 30, 2009
  • Grant Title Grantor Amount Award Date
    Pediatric Urology - NIH PUA $100,000 2013


Board Certification(s)

Pediatric Urology

Medical/Professional School

The Hebrew University, Hadassah Medical School, Jerusalem
Dartmouth College, Hanover


Urology, University of Rochester - Urology Dept, Rochester
Surgery - General, University of Rochester Medical Center, Rochester
Surgery - General, Hadassah Hospital, Jerusalem


Pediatric Urology, Hospital for Sick Children, Toronto

Clinical Interests

Hypospadias, Bladder exstrophy, Undescended testicles, Hernia and hydrocele, vesicoureteral reflux, hydronephrosis, urinary tract infections, Disorders of Sexual Differentiation, Neurogenic bladder and Spina Bifida.

Research Description

Evidence base outcomes in pediatric urology, Quality improvement, Patient safety.