Mark R Zaontz MD

Pediatric Urology

Attending Pediatric Urologist at The Children's Hospital of Philadelphia

34 th street and Civic Center BlvdWood Building, 3rd floor UrologyPhiladelphia, PA 19104
Phone+1 215-590-2754
Fax+1 267-246-7335

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Education & Training

McGaw Medical Center of Northwestern UniversityFellowship, Pediatric Urology, 1984 - 1985
MedStar Health Georgetown UniversityResidency, Urology, 1981 - 1984
New York Medical College at St Vincent's Hospital and Medical Center of New YorkResidency, Surgery, 1979 - 1981
Georgetown University School of MedicineClass of 1979
Georgetown UniversityBS, Biology, Second Honors, 1971 - 1975

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Certifications & Licensure

NJ State Medical License 1988 - 2027
PA State Medical License 1988 - 2026
IL State Medical License 1984 - 1990
MD State Medical License 1981 - 1985
DC State Medical License 1981 - 1983
American Board of Urology Urology
American Board of Urology Pediatric Urology

Awards, Honors, & Recognition

Top Doctor for children Philadelphia Magazine, New Jersey Monthly, south jersey magazine, patient's choice awards, who's who in medicine, US news and World report Top Doctors, 1999-2014, 2022
Virtua President's award for outstanding contributions to clinical quality and safety Virtua Health System, 2011
Past President American Academy of Pediatrics, section on Pediatric Urology, 2008-2009

Publications & Presentations

PubMed

A Risk Stratification Model to Predict Febrile Urinary Tract Infection After Cessation of Continuous Antibiotic Prophylaxis in Children With Known Vesicoureteral Reflux.
Suhaib Abdulfattah, Nicole J Kye, Avi P Shah, Sahar Eftekharzadeh, Marina Quairoli
The Journal of Urology. 2026-02-01
4 citations
Comparison of open and robot-assisted repair for ureteropelvic junction obstruction: Outcomes and direct costs from a single-institution.
Aznive Aghababian, Suhaib Abdulfattah, Sahar Eftekharzadeh, Alice Xiang, John Weaver
Journal of Pediatric Urology. 2025-10-01
Flip it to DIG it: Combining a reverse pedicle Dartos flap with a dorsal inlay graft.
Maya R Chandru, Christopher J Long, Mark R Zaontz
Journal of Pediatric Urology. 2025-04-09

Journal Articles

Management of distal hypospadias
Zaontz, MR and Long C, AUA Update Series, 1/1/2013
Commentary on Ziada A, Hamza A, Abdel-Rassouli M et al Outcomes of Hypospadias Repair in Older Children: Prospective Study
Zaontz, MR, J Urol, 1/1/2008
Commentary on Braga LHP, Lorenzo AJ, Bagli DJ, et al Risk Factors for Recurrent Ureteropelvic Junction Obstruction after Open Pyeloplasty in a Large Pediatric Cohort
Zaontz, MR, J Urol, 1/1/2008

Books/Book Chapters

Guide to Pediatric Urology and Surgery in Clinical Practice
Chapter: “Disorders of male external genitalia: hypospadias, epispdias, concealed penis and urethral disorders”.
Page 71 - 82Zaontz, MREditors: Godbole PP, Koyle MA and Wilcox DT.Springer Verlag, London2011
Hinman’s Atlas of Pediatric Urologic Surgery
Chapter: Concealed (Buried) and Webbed Penis.
Page 787 - 793Zaontz, MREditors: Hinman,F & Baskin, L.S..W.B. Saunders Company, Philadelphia2009
Hinman’s Atlas of Pediatric Urologic Surgery
Chapter: Glans Approximation Procedure
Page 698 - 699Zaontz, MREditors: Hinman, F & Baskin, L.S..W.B. Saunders Company, Philadelphia2009

Abstracts/Posters

Pinacidil Protects Against Bladder Hypertrophy in Spinal Cord Injured Rats.
Rodgers JM, Tran JLV, Doolin EJ, Hewitt CW, Packer MG, Zaontz MR, Dean GE, Annual American Urological Association Meeting, Anaheim, CA, 6/3/2001
Pinacidil Protects Against Bladder Hypertrophy in Spinal Cord Injured Rats.
Rodgers JM, Tran JLV, Doolin EJ, Hewitt CW, Packer MG, Zaontz MR, Dean GE, Annual American Urological Association Meeting; J of Urol, Anaheim, CA, 6/3/2001
Congenital Genitourinary Anomalies and Maternal Cocaine Abuse.
Hartanto V, Stahl GE, Han K, Packer MG, Zaontz MR, Dean GE, Annual Meeting of the American Academy of Pediatrics, Section on Urology Program, Chicago, IL, 10/28/2000

Lectures

Nuances of distal hypospadias.
10/1/2013
Is Microscopic Hypospadias Repair Superior to Loupes.
Las Vegas, NV - 9/21/2013
The modified sleeve technique for second stage hypospadias repair.
Costa Rica - 1/16/2012

Other

Hypospadias Smack Down. (Film presented at the Fall congress SPU)
Zaontz,MR and Dean, GE
Las Vegas, NV - 9/22/2013
Surgical Techniques to Correct the Concealed Penis. (Film presented at the AAP annual meeting)
Zaontz MR
San Francisco, CA - 10/2/2010
Surgical Correction of the Buried Penis. (Film presented at the Annual Meeting, Society of Pediatric Urology)
Zaontz MR
San Francisco, CA - 5/1/2004