John Fritzlen MD

Physician

Summary

John Fritzlen, MD completed his training in Internal Medicine and Cardiovascular Disease at the University of Kansas. He currently serves as a cardiologist at the University of Kansas Health System. Dr. Fritzlen has contributed to the field through multiple publications in cardiology journals, with research interests including hypertrophic cardiomyopathy and sports cardiology.

University of Kansas School of MedicineFellowship, Cardiovascular Disease, 2022 - 2025
University of Kansas School of MedicineChief Residency, Internal Medicine, 2021 - 2022
University of Kansas School of MedicineResidency, Internal Medicine, 2018 - 2021
University of Kansas School of MedicineClass of 2018
University of KansasBS, Chemical Engineering, 2008 - 2012

PubMed

Long-Term Real-World Impact of Cardiac Myosin Inhibitors on Diastolic Function in Hypertrophic Cardiomyopathy Patients.
Aakash Bavishi, John Fritzlen, Marybeth Soutar, Kutaiba Nazif, Francisco Gonzalez
The American Journal of Cardiology. 2026-04-22
Self- and Goal-Directed Valsalva Maneuver vs Exercise in Eliciting Left Ventricular Outflow Tract Obstruction.
Aakash Bavishi, John Fritzlen, Kutaiba Nazif, Marybeth Soutar, Margaret Kurnides
JACC. Advances. 2026-02-01
1 citations
Echocardiography in Athletes: the Ever-Evolving Assessment of Physiology Versus Pathology.
John T Fritzlen, Matthew W Martinez
Current Cardiology Reports. 2026-01-17

Journal Articles

Clinical Presentation, Natural History and Management of Coronary Artery Ectasia
Prasad C. Gunasekaran, Reza Masoomi, Dusan Stanojevic, Taylor Drees, John Fritzlen, Megan Haghnegahdar, Matthew McCullough, Ashwani Mehta, Matthew Earnest, Mark Wiley,..., Journal of American College of Cardiology, 3/21/2017
Clinical and pathological evolution of giant cell arteritis: a prospective study of follow-up temporal artery biopsies in 40 treated patients.
Maleszewski JJ, Younge BR, Fritzlen JT, Hunder GG, Goronzy JJ, Warrington KJ, Weyand CM, Modern Pathology, 3/3/2017
Effect of Aggressive Lipid Therapy on Progression of Carotid Artery Stenosis: A Longterm Follow Up Study
Zubair Shah, Rashmi Thapa, Mashood Wani, Suresh Sharma, Taylor Myers, Kamalakar Surineni, Chris Johnson, Lauren Penn, John Fritzlen, Reza Masoomi, Prasad Gunasekaran, ..., Journal of American College of Cardiology, 3/17/2015

Abstracts/Posters

Clinical Presentation, Natural History and Management of Coronary Artery Ectasia
Prasad C. Gunasekaran, Reza Masoomi, Dusan Stanojevic, Taylor Drees, John Fritzlen, Megan Haghnegahdar, Matthew McCullough, Ashwani Mehta, Matthew Earnest, Mark Wiley,..., American College of Cardiology, Washington DC, 3/2017
Second Temporal Artery Biopsies in Patients with Temporal Arteritis (TA)
John Fritzlen, Brian Younge, Cornelia M. Weyand, Gene G. Hunder, Jorg Goronzy, Kenneth J. Warrington and Joseph Maleszewski, ACR/ARHP Annual Meeting, San Francisco, CA, 11/9/2015
Effect of Aggressive Lipid Therapy on Progression of Carotid Artery Stenosis: A Longterm Follow Up Study
Zubair Shah; Rashmi Thapa; Mashood Wani; Suresh Sharma; Taylor Myers; Kamalakar Surineni; Chris Johnson; Lauren Penn; John Fritzlen; Reza Masoomi; Prasad Gunasekaran; ..., American College of Cardiology, San Diego, California, 3/15/2015