Meet Our Team
Adult Faculty and Staff










Karen M. Henrichs, PA-C
Physician Assistant Surgical
Urologic Oncology

Myranda J. Koch, DNP, FNP
Nurse Practitioner
General Urology



Pediatric Faculty and Staff

John V. Kryger, MD
Chief, Professor

Jonathan S. Ellison, MD
Assistant Professor

Travis Groth, MD
Associate Professor

Hrair George Mesrobian, MD, MSc
Professor

Elizabeth B. Roth, MD
Assistant Professor

Kathryn R. Trandem, MD, PhD
Assistant Professor

Matthew James Armstrong, APNP
Nurse Practitioner

Katherine Ellen Kressin, APNP
Nurse Practitioner

Coleen Rosen, APNP
Nurse Practitioner

Heidi Vanderpool, APNP
Nurse Practitioner
Community Physicians

Michelle Andrew, MD
Staff Physician

Jeffrey Bejma, MD
Staff Physician

John P. Lacey, MD, FACS
Staff Physician
Urology Residents

Pranav Dadhich, MD
Urology Resident

Viraj Maniar, MD
Urology Resident

Robert Medairos, MD
Urology Resident

David Charles, MD
Urology Resident

Tyler Wittmann, MD
Urology Resident

Raymond Yong, MD
Urology Resident

Matthew Kasson, MD
Urology Resident

Joseph Lankford, MD
Urology Resident

Keerthana Mohankumar, MD
Urology Resident

Nayan Shah, MD
Urology Resident

Brendan Waldoch, MD, MS
Urology Resident

Andrew Watts, MD
Urology Resident

Isaac Melin, MD
Urology Resident

Megan Paradzinsky, MD
Urology Resident
