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Hillary Copp


  • Professor, Urology
  • Pediatric Urologist


Dr. Copp is a pediatric urologist who treats abnormalities of the urinary tract and genitals, including urinary tract infections, disorders of sex development and spina bifida. She treats patients ranging from infants to teens. Copp uses multiple surgical techniques, including open, endoscopic, laparoscopic and robot-assisted laparoscopic surgery.

Copp’s research interests include pediatric urinary tract infections, vesicoureteral reflux, antimicrobial resistance, adherence with antibiotic prophylaxis and the urinary microbiome.

Education & Training

  • Stanford Epidemiology
  • Stanford Pediatric Urology
  • University of Virginia Urology
  • Penn State College of Medicine Medicine
  • UC Santa Barbara Biological Sciences


  • Brar RK, Weiser L, Copp HL, Livingston KS. Urinary tract infections in pediatric orthopedic surgical patients: a Single Institution National Surgical Quality Improvement Program Study. J Pediatr Orthop B. 2024 Feb 19. PubMed
  • Hacker EC, Lai LY, Baradaran N, Elaine Allen I, Breyer BN, Copp HL, Hampson LA. Patient Characteristics Associated with Sexual Interest and Activity Among Adults with Spina Bifida. Urology. 2023 Dec 07. PubMed
  • Copp HL. Commentary on evaluating the requirement of ultrasonography for children with their first urinary tract infection. J Pediatr Urol. 2023 Nov 17. PubMed
  • Hwang CK, Matta R, Woolstenhulme J, Britt AK, Schaeffer AJ, Zakaluzny SA, Kleber KT, Sheikali A, Flynn-O'Brien KT, Sandilos G, Shimonovich S, Fox N, Hess AB, Zeller KA, Koberlein GC, Levy BE, Draus JM, Sacks M, Chen C, Luo-Owen X, Stephens JR, Shah M, Burks F, Moses RA, Rezaee ME, Vemulakonda VM, Halstead NV, LaCouture HM, Nabavizadeh B, Copp H, Breyer B, Schwartz I, Feia K, Pagliara T, Shi J, Neuville P, Hagedorn JC. Management of pediatric renal trauma - Results from the American Association for Surgery and Trauma Multi-Institutional Pediatric Acute Renal Trauma Study (Mi-PARTS). J Trauma Acute Care Surg. 2023 Nov 15. PubMed
  • Lai LY, Lopez AD, Copp HL, Baradaran N, Breyer BN, Elaine Allen I, Hampson LA. Access and Utilization of Health Care by Adults with Spina Bifida. Urology. 2023 Nov; 181:174-181. PubMed
  • Overland MR, Trandem K, Allen IE, Copp HL. Revisiting the utility of prenatal ultrasound in the routine workup of first febrile UTI: A systematic review and meta-analysis of the negative predictive value of prenatal ultrasound for identification of urinary tract abnormalities after first febrile urinary tract infection in children. J Pediatr Urol. 2023 12; 19(6):754-765. PubMed
  • Hampson LA, Li Y, Shaw NM, Copp HL. Repurposing an ACE Malone Channel for Continent Intermittent Catheterization During Re-augmentation Cecocystoplasty: The MACEtrofanoff Procedure. Urology. 2023 03; 173:187-191. PubMed
  • Li Y, Copp HL. Editorial Comment. J Urol. 2022 12; 208(6):1321-1322. PubMed
  • Fergus KB, Zambeli-Ljepovic A, Hampson LA, Copp HL, Nagata JM. Health care utilization in young adults with childhood physical disabilities: a nationally representative prospective cohort study. BMC Pediatr. 2022 08 25; 22(1):505. PubMed
  • Overland MR, Leva NV, DiSandro M, Copp HL. Feasibility of Awake Intravesical Botulinum Toxin Injection in Pediatric Neurogenic Bladder. J Urol. 2022 09; 208(3):702-710. PubMed
  • Fergus KB, Schwab ME, Butler C, Cattle CJ, Breyer BN, Copp HL, Nagata JM. Young Adult Healthcare Exposure and Future Opioid Misuse: A Prospective Cohort Study. Am J Prev Med. 2022 06; 62(6):914-920. PubMed
  • Storm DW, Copp HL, Halverson TM, Du J, Juhr D, Wolfe AJ. A Child's urine is not sterile: A pilot study evaluating the Pediatric Urinary Microbiome. J Pediatr Urol. 2022 06; 18(3):383-392. PubMed
  • Butler C, Kornberg Z, Copp HL. Practitioner counseling associated with improved opioid disposal among families of postoperative pediatric patients. J Pediatr Urol. 2021 Oct; 17(5):634.e1-634.e7. PubMed
  • Copp HL. Editorial Comment. J Urol. 2021 08; 206(2):446. PubMed
  • Showen AE, Copp HL, Allen IE, Hampson LA. Resilience and associated characteristics in adults with spina bifida. Dev Med Child Neurol. 2021 10; 63(10):1229-1235. PubMed
  • Sadighian MJ, Allen IE, Quanstrom K, Breyer BN, Suskind AM, Baradaran N, Copp HL, Hampson LA. Caregiver Burden Among Those Caring for Patients With Spina Bifida. Urology. 2021 07; 153:339-344. PubMed
  • Holzman SA, Ahn JJ, Baker Z, Chuang KW, Copp HL, Davidson J, Davis-Dao CA, Ewing E, Ko J, Lee V, Macaraeg A, Nicassio L, Sadighian M, Stephany HA, Sturm R, Swords K, Wang P, Wehbi EJ, Khoury AE, Western Pediatric Urology Consortium (WPUC). A multicenter study of acute testicular torsion in the time of COVID-19. J Pediatr Urol. 2021 08; 17(4):478.e1-478.e6. PubMed
  • Showen A, Copp HL, Allen IE, Baradaran N, Liaw A, Hampson LA. Characteristics Associated With Depression, Anxiety, and Social Isolation in Adults With Spina Bifida. Urology. 2021 03; 149:255-262. PubMed
  • Copp HL. Editorial Comment. J Urol. 2020 11; 204(5):1053. PubMed
  • Leva NV, Copp HL, Quanstrom K, Hampson LA. Demographics and baseline care among newly transitioning adult congenital urology patients. J Pediatr Urol. 2020 Aug; 16(4):476.e1-476.e6. PubMed
  • Selekman RE, Gaither TW, Kornberg Z, Liaw A, Copp HL. Unwanted Medication Disposal: Audit of California Pharmacy Advice. Ann Intern Med. 2020 05 05; 172(9):632-634. PubMed
  • Leva NV, Copp HL. An End in Sight: Shorter Duration of Parenteral Antibiotics in Neonates. Pediatrics. 2019 09; 144(3). PubMed
  • Gaither TW, Selekman R, Kazi DS, Copp HL. Cost-Effectiveness of Screening Ultrasound after a First, Febrile Urinary Tract Infection in Children Age 2-24 Months. J Pediatr. 2020 01; 216:73-81.e1. PubMed
  • Fergus KB, Copp HL, Tabler JL, Nagata JM. Eating disorders and disordered eating behaviors among women: Associations with sexual risk. Int J Eat Disord. 2019 11; 52(11):1310-1315. PubMed
  • Gaither TW, Copp HL. Antimicrobial prophylaxis for urinary tract infections: implications for adherence assessment. J Pediatr Urol. 2019 Aug; 15(4):387.e1-387.e8. PubMed
  • Baradaran N, McAninch JW, Copp HL, Quanstrom K, Breyer BN, Hampson LA. Long-term follow-up of urethral reconstruction for blunt urethral injury at a young age: urinary and sexual quality of life outcomes. J Pediatr Urol. 2019 May; 15(3):224.e1-224.e6. PubMed
  • Copp HL, Lorenzo AJ, Shukla AR, Caldamone AA. Pediatric Urology. Urol Clin North Am. 2018 11; 45(4):xiii-xiv. PubMed
  • Gaither TW, Cooper CS, Kornberg Z, Baskin LS, Copp HL. Predictors of becoming overweight among pediatric patients at risk for urinary tract infections. J Pediatr Urol. 2019 Feb; 15(1):61.e1-61.e6. PubMed
  • Selekman RE, Shapiro DJ, Boscardin J, Williams G, Craig JC, Brandström P, Pennesi M, Roussey-Kesler G, Hari P, Copp HL. Uropathogen Resistance and Antibiotic Prophylaxis: A Meta-analysis. Pediatrics. 2018 07; 142(1). PubMed
  • Gaither TW, Copp HL. Revisiting Prior Studies-Is There More There? J Urol. 2018 06; 199(6):1415-1416. PubMed
  • Gaither TW, Cooper CS, Kornberg Z, Baskin LS, Copp HL. Risk Factors for the Development of Bladder and Bowel Dysfunction. Pediatrics. 2018 01; 141(1). PubMed
  • Gaither TW, Awad MA, Leva NV, Murphy GP, Breyer BN, Copp HL. Missed Opportunities to Decrease Radiation Exposure in Children with Renal Trauma. J Urol. 2018 02; 199(2):552-557. PubMed
  • Murphy GP, Gaither TW, Awad MA, Osterberg EC, Baradaran N, Copp HL, Breyer BN. Management of Pediatric Grade IV Renal Trauma. Curr Urol Rep. 2017 Mar; 18(3):23. PubMed
  • Tran GN, Bodapati AV, Routh JC, Saigal CS, Copp HL. Parental Preference Assessment for Vesicoureteral Reflux Management in Children. J Urol. 2017 03; 197(3 Pt 2):957-962. PubMed
  • Selekman RE, Sanford MT, Ko LN, Allen IE, Copp HL. Does perception of catheterization limit its use in pediatric UTI? J Pediatr Urol. 2017 Feb; 13(1):48.e1-48.e6. PubMed
  • Gaither TW, Copp HL. Vesicoureteral Reflux: How to Interpret Different Studies with Different Results. J Urol. 2016 10; 196(4):981-2. PubMed
  • Selekman RE, Allen IE, Copp HL. Determinants of practice patterns in pediatric UTI management. J Pediatr Urol. 2016 Oct; 12(5):308.e1-308.e6. PubMed
  • Copp HL, Hanley J, Saigal CS, Saperston K, NIDDK Urologic Diseases in America Project. Acute health care utilization and outcomes for outpatient-treated urinary tract infections in children. J Pediatr Urol. 2016 Aug; 12(4):234.e1-5. PubMed
  • Gaither TW, Copp HL. State appellant cases for testicular torsion: Case review from 1985 to 2015. J Pediatr Urol. 2016 Oct; 12(5):291.e1-291.e5. PubMed
  • Ko LN, Chuang KW, Champeau A, Allen IE, Copp HL. Lower Urinary Tract Dysfunction in Elementary School Children: Results of a Cross-Sectional Teacher Survey. J Urol. 2016 Apr; 195(4 Pt 2):1232-8. PubMed
  • Menon V, Breyer B, Copp HL, Baskin L, Disandro M, Schlomer BJ. Do adult men with untreated ventral penile curvature have adverse outcomes? J Pediatr Urol. 2016 Feb; 12(1):31.e1-7. PubMed
  • Schmidt B, Copp HL. Work-up of Pediatric Urinary Tract Infection. Urol Clin North Am. 2015 Nov; 42(4):519-26. PubMed
  • Basta AM, Courtier J, Phelps A, Copp HL, MacKenzie JD. Scrotal swelling in the neonate. J Ultrasound Med. 2015 Mar; 34(3):495-505. PubMed
  • Copp HL. Editorial comment. J Urol. 2015 Apr; 193(4):1346. PubMed
  • Botta S, Copp HL. To V(CUG) or not to V(CUG) in infants with prenatal hydronephrosis? J Urol. 2014 Sep; 192(3):640-1. PubMed
  • Schlomer BJ, Copp HL. Cumulative incidence of outcomes and urologic procedures after augmentation cystoplasty. J Pediatr Urol. 2014 Dec; 10(6):1043-50. PubMed
  • Edlin RS, Copp HL. Antibiotic resistance in pediatric urology. Ther Adv Urol. 2014 Apr; 6(2):54-61. PubMed
  • Saperston KN, Shapiro DJ, Hersh AL, Copp HL. A comparison of inpatient versus outpatient resistance patterns of pediatric urinary tract infection. J Urol. 2014 May; 191(5 Suppl):1608-13. PubMed
  • Schlomer B, Breyer B, Copp H, Baskin L, DiSandro M. Do adult men with untreated hypospadias have adverse outcomes? A pilot study using a social media advertised survey. J Pediatr Urol. 2014 Aug; 10(4):672-9. PubMed
  • Schlomer BJ, Copp HL. Secondary data analysis of large data sets in urology: successes and errors to avoid. J Urol. 2014 Mar; 191(3):587-96. PubMed
  • Copp HL, Yiee JH, Smith A, Hanley J, Saigal CS, Urologic Diseases in America Project. Use of urine testing in outpatients treated for urinary tract infection. Pediatrics. 2013 Sep; 132(3):437-44. PubMed
  • Schlomer B, Rodriguez E, Weiss D, Copp H. Parental beliefs about nocturnal enuresis causes, treatments, and the need to seek professional medical care. J Pediatr Urol. 2013 Dec; 9(6 Pt B):1043-8. PubMed
  • Edlin RS, Shapiro DJ, Hersh AL, Copp HL. Antibiotic resistance patterns of outpatient pediatric urinary tract infections. J Urol. 2013 Jul; 190(1):222-7. PubMed
  • Yiee JH, Saigal CS, Lai J, Copp HL, Churchill BM, Litwin MS, Urologic Diseases in America Project. Timing of orchiopexy in the United States: a quality-of-care indicator. Urology. 2012 Nov; 80(5):1121-6. PubMed
  • Tasian GE, Copp HL, Baskin LS. Diagnostic imaging in cryptorchidism: utility, indications, and effectiveness. J Pediatr Surg. 2011 Dec; 46(12):2406-13. PubMed
  • Copp HL, Halpern MS, Maldonado Y, Shortliffe LD. Trends in hospitalization for pediatric pyelonephritis: a population based study of California from 1985 to 2006. J Urol. 2011 Sep; 186(3):1028-34. PubMed
  • Yiee JH, Copp HL. Database research in pediatric urology. Curr Opin Urol. 2011 Jul; 21(4):309-13. PubMed
  • Yiee JH, Tasian GE, Copp HL. Management trends in prenatally detected hydronephrosis: national survey of pediatrician practice patterns and antibiotic use. Urology. 2011 Oct; 78(4):895-901. PubMed
  • Copp HL, Shapiro DJ, Hersh AL. National ambulatory antibiotic prescribing patterns for pediatric urinary tract infection, 1998-2007. Pediatrics. 2011 Jun; 127(6):1027-33. PubMed
  • Rodriguez E, Weiss DA, Copp HL. Adherence to antibiotic prophylaxis in children with vesicoureteral reflux. Adv Urol. 2011; 2011:134127. PubMed
  • Tasian GE, Yiee JH, Copp HL. Imaging use and cryptorchidism: determinants of practice patterns. J Urol. 2011 May; 185(5):1882-7. PubMed
  • Tasian GE, Copp HL. Diagnostic performance of ultrasound in nonpalpable cryptorchidism: a systematic review and meta-analysis. Pediatrics. 2011 Jan; 127(1):119-28. PubMed
  • Skoog SJ, Peters CA, Arant BS, Copp HL, Elder JS, Hudson RG, Khoury AE, Lorenzo AJ, Pohl HG, Shapiro E, Snodgrass WT, Diaz M. Pediatric Vesicoureteral Reflux Guidelines Panel Summary Report: Clinical Practice Guidelines for Screening Siblings of Children With Vesicoureteral Reflux and Neonates/Infants With Prenatal Hydronephrosis. J Urol. 2010 Sep; 184(3):1145-51. PubMed
  • Peters CA, Skoog SJ, Arant BS, Copp HL, Elder JS, Hudson RG, Khoury AE, Lorenzo AJ, Pohl HG, Shapiro E, Snodgrass WT, Diaz M. Summary of the AUA Guideline on Management of Primary Vesicoureteral Reflux in Children. J Urol. 2010 Sep; 184(3):1134-44. PubMed
  • Copp HL, Nelson CP, Shortliffe LD, Lai J, Saigal CS, Kennedy WA, Urologic Diseases in America Project. Compliance with antibiotic prophylaxis in children with vesicoureteral reflux: results from a national pharmacy claims database. J Urol. 2010 May; 183(5):1994-9. PubMed
  • Copp HL, Wong IY, Krishnan C, Malhotra S, Kennedy WA. Clinical presentation and urachal remnant pathology: implications for treatment. J Urol. 2009 Oct; 182(4 Suppl):1921-4. PubMed
  • Wong IY, Copp HL, Clark CJ, Wu HY, Shortliffe LD. Quantitative ultrasound renal parenchymal area correlates with renal volume and identifies reflux nephropathy. J Urol. 2009 Oct; 182(4 Suppl):1683-7. PubMed
  • Nelson CP, Copp HL, Lai J, Saigal CS, Urologic Diseases in America Project. Is availability of endoscopy changing initial management of vesicoureteral reflux? J Urol. 2009 Sep; 182(3):1152-7. PubMed
  • Copp HL. Are we all talking about the same thing? J Urol. 2009 Jul; 182(1):12-3. PubMed
  • Copp HL, Chin JL, Conaway M, Theodorescu D. Prospective evaluation of the prognostic relevance of molecular staging for urothelial carcinoma. Cancer. 2006 Jul 01; 107(1):60-6. PubMed
  • Copp H, Bissonette EA, Theodorescu D. Tumor control outcomes of patients treated with trimodality therapy for locally advanced prostate cancer. Urology. 2005 Jun; 65(6):1146-51. PubMed