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Mark Zittergruen
Patient Rating
4.9 / 5 (Based on 132 Reviews)

Mark Zittergruen, MD, FAAP, FACC, MBA

Specialties: Cardiology and Pediatric Cardiology

Schedule an Appointment

To schedule an appointment with Mark Zittergruen, please call 319-398-6650

Year joined staff: 2016

Education and Training


University of Iowa College of Engineering, BS in Biomedical Engineering
University of Iowa Tippie College of Management, Masters in Business Administration
The University of Iowa College of Medicine, Doctor of Medicine


The University of Iowa Hospitals and Clinics


The University of Iowa Hospitals and Clinics

Professional Memberships

  • American Academy of Pediatrics, Fellow
  • American College of Cardiology, Fellow
  • American Heart Association
  • Linn County Medical Society
  • Iowa Medical Society
  • Alpha Omega Alpha
  • Tau Beta Pi (National Engineering Honor Society)

Honors, Awards, etc.

  • 2017 Winner, Colleague award
  • 2016 Nominee for Patient Advocate Award
  • 2016 Nominee for Mentor/Educator Award, one of Mercy's Annual Provider Awards


  • American Board of Pediatrics
  • American Board of Pediatric Cardiology

Personal Interests

Dr. Zittergruen and his wife are the parents of five daughters and enjoy spending time with them at home and with their activities. He especially enjoys music and plays piano for Mass at his church. His hobbies include reading mystery novels, board games and puzzles, watching the Hawkeyes, and "pretending to be a gardener."

Patient Reviews

July 28, 2022
Dr. Zittergruen explains everything very well. He is always patient with our questions and it never feels like we are being rushed through.
July 27, 2022
Loved my provider he was the best!
July 15, 2022
Very good experience.
July 08, 2022
We have the best visits with Dr Z. He is an absolute delight - wonderful with our daughter and very clear with progress/steps forward.
May 21, 2022
It's clear that staff works with kids and cares about them. Dr. Zittergruen spent a generous about of time answering our questions and doing his own follow up. The tests specialists were also very patient and friendly.
May 10, 2022
Dr. Was very comfortable talking to my teen child, explained things so child would understand well. Had good rapport and concern
March 21, 2022
Dr. Z is so great at explaining everything!
January 24, 2022
I cannot say enough positives about Dr. Z. He explained everything so well and he made sure to ease our concerns. He was so good!
December 24, 2021
Very friendly! Loved his great attitude!!
December 24, 2021
Dr Z is THE BEST DOCTOR ever!!! Cant say enough good things about him. He talks directly to our daughter, listens and has real conversations with her. Amazing helpful compassionate man, no one better. Top notch !!!
December 09, 2021
Dr. Zittergruen was very friendly, patient, & thorough.
November 30, 2021
He is an excellent cardiologist and really cares about the patient
October 26, 2021
Dr Z put my daughter at ease within minutes of walking into the room. He has a friendly manner, and is great at helping a nervous kid feel better about having to be at a cardiology appointment.
October 26, 2021
Dr. Zittergran is the best doctor I've ever met.
October 18, 2021
Dr Z was amazing. Not rushed. Thorough. Excellent explanations.
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Provider's Contact Information

Mercy Pediatric Cardiology Clinic website


Patient Stories

A Little Warrior's Big Battle

Hayley Ballew had a feeling something wasn't right as she nursed her newborn son, Carter, in September 2016. I could tell he was latching really well, but he had to let off to take a breath," the Marion mother of two remembers. Hayley and her husband, Eric, noticed Carter's head bobbed slightly with each breath and his chest retracted in unusual places. Read their story on page 6.