Timothy Markman, MD
Assistant Professor of Medicine (Cardiovascular Medicine) at the Hospital of the University of Pennsylvania
Affiliated Scientist, Penn Brain Science, Translation, Innovation, and Modulation Center
Co-Director, Non-Invasive Cardiac Radioablation Program
Senior Fellow, Leonard David Institute of Health Economics
Department: Medicine
Contact information
Hospital of the University of Pennsylvania
1 Convention Avenue
Philadelphia, PA 19104
1 Convention Avenue
Philadelphia, PA 19104
Office: 215-615-4332
Education:
BA (Neurobiology and English)
Harvard University, 2010.
MD (Medicine)
Johns Hopkins University , 2014.
MSTR
University of Pennsylvania, 2024.
Permanent linkBA (Neurobiology and English)
Harvard University, 2010.
MD (Medicine)
Johns Hopkins University , 2014.
MSTR
University of Pennsylvania, 2024.
Description of Clinical Expertise
Bradyarrhythmias, Tachycarrhythmias, Atrial arrhythmias, Atrial Fibrillation, Ventricular Tachycardia, Ventricular Fibrillation, Cardiac Implantable Electronic Devices, Catheter AblationDescription of Research Expertise
Cardiac Electrophysiology, Autonomic Physiology, Neuromodulation, Translational ResearchSelected Publications
Nathan AS, Yang L, Reddy RP, Thapi S, Eberly L, Markman T, Fanaroff AC, Giri J, Zeitler EP, Jackson LR, Graham TP, Deo R, Marchlinski FE, Frankel DS: Racial, ethnic, socioeconomic and geographic inequities in catheter ablation for atrial fibrillation. Heart Rhythm January 2026.Patel D, Vardar U, Mai W, Grubb A, van Niekerk CJ, Sugrue Alan, Garg L, Pothenini NVK, Supple GE, Nazarian S, Deo R, Enriquez A, Callans DJ, Schaller RD, Hyman MC, Frankel DS, Marchlinski FE, Markman TM: Predicting Survival in Ventricular Tachycardia Storm: The CHAMPS Risk Score and Implications for Ablation Timing. JACC: Clinical Electrophysiology 2026.
Petzl AM, Yogasundaram H, Chaumont C, Hammond A, Dowd RP, Lin D, Tschabrunn C, Markman TM, Enriquez A, Marchlinski FE, Winterfield JR, Hyman MC: High-Density versus Point-by-Point Mapping in Ventricular Tachycardia Ablation: A Comparative Analysis of Substrate Characterization. Heart Rhythm O2 December 2025.
Markman TM, Callahan TD: The Extravascular ICD: Evolving Paradigms in Sudden Death Prevention. Heart Rhythm October 2025.
Litt M, Chelius M, Raad M, Keane S, Tan JL, Arkles J, Tschabrunn CM, Nazarian S, Frankel D, Marchlinski FE, Cengel K, Markman TM: Effect of SBRT for ventricular tachycardia on cardiac function. Heart Rhythm Society Scientific Sessions 22(4): S497, Apr 2025 Notes: https://doi.org/10.1016/j.hrthm.2025.03.1258.
Zghaib, Tarek, Enriquez, Andres, Schaller, Robert D, Dixit, Sanjay, Supple, Gregory E, Garcia, Fermin C, Callans, David J, Hyman, Matthew C, Frankel, David S, Marchlinski, Francis E: Coronary Venous Ethanol Infusion for Treatment of Refractory Ventricular Arrhythmias. Heart Rhythm Page: S1547-5271(25)02397-5, Apr 2025 Notes: Online Ahead of print https://doi.org/10.1016/j.hrthm.2025.04.049.
Buhuya T, Chelius M, Raad M, Keane S, Tan JL, Arkles J, Tschabrunn CM, Nazarian S, Frankel D, Marchlinski FE, Cengel K, Markman TM: Orthotopic heart transplantation following stereotactic body radiotherapy for refractory ventricular arrhythmias. Heart Rhythm Society Scientific Sessions 22(4): S763, Apr 2025 Notes: https://doi.org/10.1016/j.hrthm.2025.03.1827.
Litt M, Chelius M, Raad M, Keane S, Tan JL, Arkles J, Tschabrunn CM, Nazarian S, Frankel D, Marchlinski FE, Cengel K, Markman TM: Effect of cardiac SBRT on implantable electronic device lead parameters. Heart Rhythm Society Scientific Sessions 22(4): S789-S790, Apr 2025 Notes: https://doi.org/10.1016/j.hrthm.2025.03.1899.
Kumar S, Chelius M, Raad M, Keane S, Tan JL, Arkles J, Tschabrunn CM, Nazarian S, Frankel D, Marchlinski FE, Cengel K, Markman TM: Heart failure outcomes following stereotactic body radiotherapy for refractory ventricular arrhythmias. Heart Rhythm Society Scientific Sessions 22(4): S511, Apr 2025 Notes: https://doi.org/10.1016/j.hrthm.2025.03.1288.
Buhuya T, Chelius M, Raad M, Keane S, Tan JL, Arkles J, Tschabrunn CM, Nazarian S, Frankel D, Marchlinski FE, Cengel K, Markman TM: Patient characteristics and arrhythmia outcomes following stereotactic body radiotherapy for refractory ventricular arrhythmias. Heart Rhythm Society Scientific Sessions 22(4): S757-S758, Apr 2025 Notes: https://doi.org/10.1016/j.hrthm.2025.03.1815.