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Timothy W.I. Clark, MD

Timothy W.I. Clark, MD Physician

Director of Interventional Radiology at Penn Presbyterian Medical Center
Associate Professor of Clinical Radiology

Dr. Clark is a Penn Medicine employed physician.

Clinical Specialties


  • Radiology

Programs & Centers:

Board Certification:

  • Diagnostic Radiology, 1997
  • Vascular and Interventional Radiology, 1999

Clinical Expertise:

  • Angiomyolipoma
  • Arterial Recanalization
  • Back Pain
  • Endovascular Therapy
  • Femoral Artery Angioplasty and Stenting
  • Kidney Tumors
  • Leg Pain
  • Liver - Portal Hypertension
  • Liver Cancer
  • Osteoporotic Compression Fractures
  • Peripheral Vascular Disease
  • Pulmonary Arteriovenous Malformation (PAVM)
  • Radiofrequency Ablation (RFA)
  • Renal Artery Angioplasty and Stenting
  • Renal Stent
  • Subclavian Artery Angioplasty and Stenting
  • Thoracic Duct Embolization (TDE)
  • Tibial Artery Blockage
  • TIPS Complications Management
  • Transjugular Intrahepatic Portosystemic Shunts (TIPS)
  • Uterine Fibroid Embolization (UFE)
  • Varicocele Embolization
  • Vascular Stent
  • Venous Insufficiency

Description of Clinical Expertise

Endovascular recanalization of chronic total arterial occlusions; Limb salvage; Treatment of deep venous thrombosis; Endovenous laser ablation of varicose veins; Renal artery stenting; Percutaneous thermal ablation of lung, liver, renal, adrenal and soft tissue malignancies; Desmoid tumor ablation; Transjugular intrahepatic portosystemic shunts; Uterine artery embolization; Percutaneous salvage of nonmaturing hemodialysis fistulas; Embolization of angiomyolipomas

Practice Locations and Appointments

Insurance Accepted

  • Aetna US Healthcare
  • Cigna
  • Cigna HealthSpring
  • Devon Health Services (Americare)
  • Gateway Health Plan
  • Geisinger Health Plan
  • HealthAmerica / HealthAssurance, a Coventry Plan
  • HealthPartners
  • HealthPartners Medicare
  • HealthSmart
  • Highmark Blue Shield
  • Horizon Blue Cross Blue Shield of New Jersey
  • Humana / Choicecare
  • Independence Blue Cross (Keystone East)
  • Intergroup
  • Keystone First
  • Multiplan
  • NJ Medicaid
  • NJ Qualcare
  • Oxford Health Plan
  • PA Medicaid
  • PA Medicare
  • Preferred Health Care/LGH
  • Rail Road Medicare / Palmetto GBA
  • Tricare
  • United Healthcare
  • UnitedHealthcare Community Plan
  • US Family Health Plan

Education and Training

Medical School: University of Alberta
Residency: Royal Columbian Hospital
Residency: UBC Hospital
Fellowship: Hospital of the University of Pennsylvania


American College of Radiology, National American Roentgen Ray Society, National Canadian Medical Association, International Medical Research Council of Canada, International New York Angiography Society, Local New York Medical Society, Local Philadelphia Angiography and Interventional Radiology Society, Local Radiological Society of North America, National Royal College of Physicians and Surgeons, International Society of Interventional Radiology Foundation, National Society of Interventional Radiology, National Society of Interventional Radiology, National

Hospital Affiliation

Dr. Clark is a Penn Medicine employed physician.

Hospital Privileges:

  • Hospital of the University of Pennsylvania: Has privileges to treat patients in the hospital.
  • Penn Presbyterian Medical Center: Has privileges to treat patients in the hospital.
  • Pennsylvania Hospital: Has privileges to treat patients in the hospital.


Description of Research Expertise:

Thermal ablation of renal cell carcinoma; Transjugular intrahepatic portosystemic shunts; Computational flow dynamics in medical device design; Functional MRI for assessment of treatment response following transcatheter embolization; Multivariate modeling in outcomes research

Selected Publications:

Clark Timothy W I, Redmond Jonas W, Mantell Mark P, Nadolski Gregory J, Mondschein Jeffrey I, Dowd Michael F, Dagli Mandeep S, Sudheendra Deepak, Shlansky-Goldberg Richard D, Cohen Raphael D: Initial Clinical Experience: Symmetric-Tip Dialysis Catheter with Helical Flow Characteristics Improves Patient Outcomes. Journal of vascular and interventional radiology : JVIR : 2015.

Weber Charles N, Nadolski Gregory J, White Sarah B, Clark Timothy W I, Mondschein Jeffrey I, Stavropoulos S William, Shlansky-Goldberg Richard D, Trerotola Scott O, Soulen Michael C: Long-Term Patency and Clinical Analysis of Expanded Polytetrafluoroethylene-Covered Transjugular Intrahepatic Portosystemic Shunt Stent Grafts. Journal of vascular and interventional radiology : JVIR 26 (9): 1257-65,2015.

Clark Timothy W I, Isu Giuseppe, Gallo Diego, Verdonck Pascal, Morbiducci Umberto: Comparison of symmetric hemodialysis catheters using computational fluid dynamics. Journal of vascular and interventional radiology : JVIR 26 (2): 252-9.e2,2015.

Clark Timothy W I, McCann Jeffrey W, Salsamendi Jason, Dowd Michael F, Hajdu Cristina H: Optimizing needle direction during transjugular liver biopsy provides superior biopsy specimens. Cardiovascular and interventional radiology 37 (6): 1540-5,2014.

Garnet DJ, Troiano MA, Mantell M, Watts M, Clark TWI.: Do quantitative angiographic changes in infrageniculate perfusion predict clinical success following percutaneous revascularization? J. Vasc Interv Radiol, SIR Annual Meeting, San Diego, CA : 2014.

Weber C and Clark TWI.: Transjugular Portosystemic Intrahepatic Shunts. State of the Art (Invited Review). Radiology : 2014.

Pryluck DS, Hamilton K and Clark TWI.: Ablation of Desmoid Tumors. Image-Guided Interventions, Elsevier, Inc. : 2013.

Hecht Elizabeth M, Do Richard K G, Kang Stella K, Bennett Genevieve L, Babb James S, Clark Timothy W I: Diffusion-weighted imaging for prediction of volumetric response of leiomyomas following uterine artery embolization: a preliminary study. Journal of Magnetic Resonance Imaging 33 (3): 641-6,2011.

Eesa M and Clark TWI.: Transjugular intrahepatic portosystemic shunt: state of the art. Seminars Roengentol 46 : 125-133,2011.

Khilnani Neil M, Grassi Clement J, Kundu Sanjoy, D'Agostino Horacio R, Khan Arshad Ahmed, McGraw J Kevin, Miller Donald L, Millward Steven F, Osnis Robert B, Postoak Darren, Saiter Cindy Kaiser, Schwartzberg Marc S, Swan Timothy L, Vedantham Suresh, Wiechmann Bret N, Crocetti Laura, Cardella John F, Min Robert J: Multi-society consensus quality improvement guidelines for the treatment of lower-extremity superficial venous insufficiency with endovenous thermal ablation from the Society of Interventional Radiology, Cardiovascular Interventional Radiological Society of Europe, American College of Phlebology and Canadian Interventional Radiology Association. Journal of vascular and interventional radiology : JVIR 21 (1): 14-31,2010.

Academic Contact Info

Director, Interventional Radiology
Department of Medical Imaging
Penn Presbyterian Medical Center
39th and Market Streets

Philadelphia, PA 19104
Phone: (215) 662-9182
Fax: (215) 615-3545
Patient appointments: 800-789-PENN (7366)