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Mark Zittergruen
Patient Rating
4.9 / 5 (Based on 94 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

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.
October 11, 2021
Dr Z does an amazing job explaining things so my son and I can both understand
October 06, 2021
He was absolutely wonderful!
September 23, 2021
Absolutely the best provider we've had out of all provider's! He is so down to earth, which makes children much more comfortable, yet still professional, courteous/polite, knowledgeable and explains everything in a slow and simple manner so it's easily understood. It also is much appreciated he either has an amazing memory and/or checks file before coming in as he comes off as if he just saw us yesterday and remembers details specific to minor patient, such as extra curricular and the like to be able to ease them with basic conversation.
September 14, 2021
Really liked the Dr. He thoroughly explained and showed us how the heart worked.. Talked with my son about school and sports & also the importance of staying hydrated hearing it from someone professional kinda sunk in more than hearing it from his parents Overall very happy with visit!
September 07, 2021
I was very satisfied and impressed with the doctor and all his associated staff. Would highly recommend to anyone.
August 27, 2021
I just didn't feel listened too
August 26, 2021
Dr Zittergruen was wonderful. He was very thorough and very easy to understand. He answered all my questions .His manner was also pleasing.
August 20, 2021
Everyone we came in contact with was amazing! Very friendly and helpful.
August 10, 2021
Dr. Zittergruen is the best! He always has plenty of time to answer our questions, and makes sure that we know what our options for treatment are.
July 07, 2021
We really appreciate the time the doctor spent talking to my daughter and myself about her condition and medication she was taking and could possibly have to take. We both left the office feeling much better about medication plan she was going to try.
June 18, 2021
love Dr Zittergruen- he's the best!!
June 14, 2021
he was very informative and very nice. He made it very easy with a baby.
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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.