Jefferson University Hospitals

Provider Profile

Gregary Marhefka, MD

Jefferson University Physician

Academic Title: Associate Professor
Associate Director, Coronary Care Unit

Cardiology - Echocardiography
Cardiology - Nuclear Cardiology

Appointment Scheduling

Call 1-800-JEFF-NOW

Existing Patients

Jefferson Health MyChart

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New Patients  | Online Scheduling

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More Ways to Get in Touch

Call 1-800-JEFF-NOW (800-533-3669) or

Office Locations

925 Chestnut Street
Philadelphia PA 19107
Phone: (215) 955-5050
Fax: (215) 503-5650

Medical Services

Board Certifications

  • Cardiovascular Disease
  • Internal Medicine

Hospital Affiliation / Admitting Privileges

  • Thomas Jefferson University Hospital


  • Jefferson Medical College, Medical School


  • National Naval Medical Center, Bethesda, Maryland


  • National Naval Medical Center, Bethesda, Maryland


  • Thomas Jefferson University Hospital

Recent Publications

Clinical Significance of Spontaneous Echo Contrast on Extracorporeal Membrane Oxygenation

Exercise during pregnancy in normal-weight women and risk of preterm birth: a systematic review and meta-analysis of randomized controlled trials

Right ventricular enlargement: Within months of arteriovenous fistula creation in 2 hemodialysis patients

Acute hypertension: Hypertensive urgency and hypertensive emergency

Prompt recognition of left ventricular free-wall rupture: Aided by the use of contrast echocardiography

The effect of aspirin on bleeding and transfusion in contemporary cardiac surgery

Feasibility of SPECT myocardial perfusion imaging in the super-obese using a multi-head semiconductor camera with attenuation correction

Patient characteristics and predictors of mortality associated with pericardial decompression syndrome: A comprehensive analysis of published cases

Medical optimization of patients prior to surgery

Vorapaxar in acute coronary syndrome patients undergoing coronary artery bypass graft surgery: Subgroup analysis from the TRACER trial (Thrombin Receptor Antagonist for Clinical Event Reduction in Acute Coronary Syndrome)

Saphenous vein graft disease: Review of pathophysiology, prevention, and treatment

Dual antiplatelet therapy with aspirin and clopidogrel: what is the risk in noncardiac surgery? A narrative review.

Poor positive predictive value of McConnell's sign on transthoracic echocardiography for the diagnosis of acute pulmonary embolism.

Right ventricular rupture and tamponade caused by malposition of the Avalon cannula for venovenous extracorporeal membrane oxygenation

Left ventricular dysfunction mimicking Takotsubo cardiomyopathy following cardiac surgery

Rethinking cocaine-associated chest pain and acute coronary syndromes

Double-barrel coronary sinus

Intravenous cocaine and QT variability.