Urology

Mark Zaontz, M.D.

Professor of Clinical Urology in Surgery

Mark R. Zaontz, M.D., is a distinguished pediatric urologist specializing in the treatment of congenital and acquired genitourinary anomalies in children at the Children's Hospital of Philadelphia (CHOP). His subspecialty focus encompasses antenatal renal anomalies such as hydronephrosis and multicystic kidneys, complex genitourinary reconstruction, hypospadias, penile anomalies including concealed penis, penile torsion, and curvature, vesicoureteral reflux, urinary tract infections, voiding dys

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Credentials

Board Certifications

Urology (ABU)
Pediatric Urology (ABPS)

Education & Training

Medical School: Georgetown University School of Medicine (MD, 1979)
Residency: MedStar Health Georgetown University (Urology, 1981-1984)
Fellowship: McGaw Medical Center of Northwestern University (Pediatric Urology, 1984-1985)

Years in Practice

45+ years

Peer Recognition

Castle Connolly — Top Doctor
2025
Healthgrades — Healthgrades Choice
Healthgrades — Healthgrades Honor Roll
Philadelphia Magazine — Top Doctor
2006-2025 (20 years)

Clinical Focus

Subspecialties

Urologic Oncology

Conditions & Treatments

Prostate Cancer SurgeryUrologic OncologyTesticular CancerBladder CancerKidney CancerProstate Cancer

Insurance(s) Accepted

Please verify your coverage with the provider — plan participation can change.

Practice Details

Hospital Affiliations

West Jersey Hospital
WellSpan Ephrata Community Hospital
University of Pennsylvania Hospital
Children's Hospital of Philadelphia

Languages

English

Conditions Dr. Zaontz treats

Frequently asked

Does Dr. Zaontz accept Aetna insurance?

Mark Zaontz's public profile lists Aetna, Amerihealth, and Anthem Blue Cross Blue Shield plus 20 more health plans as accepted plans. Plan participation can change — confirm directly with the practice before your visit.

Where does Dr. Zaontz practice?

Mark Zaontz practices in Philadelphia, PA with hospital affiliations including West Jersey Hospital, WellSpan Ephrata Community Hospital, and University of Pennsylvania Hospital.

What does Dr. Zaontz specialize in?

Mark Zaontz is a board-certified urology specialist with focus areas in Urologic Oncology.

How long has Dr. Zaontz been practicing?

Mark Zaontz has 47+ years of clinical experience in urology.

What is Dr. Zaontz's medical training?

Public profile training history includes: Medical School: Georgetown University School of Medicine (MD, 1979); Residency: MedStar Health Georgetown University (Urology, 1981-1984); Fellowship: McGaw Medical Center of Northwestern University (Pediatric Urology, 1984-1985).