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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 employed by Penn Medicine.

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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
  • Prostate Artery Embolization (PAE)
  • 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 for critical limb ischemia; Treatment of deep venous thrombosis; Prostate artery embolization for benign prostatic hyperplasia (BPH); 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 (transradial); Percutaneous salvage of nonmaturing hemodialysis fistulas; Embolization of angiomyolipomas

Practice Locations and Appointments

Insurance Accepted

  • Aetna US Healthcare
  • Cigna
  • Cigna HealthSpring
  • CVS Health
  • Devon Health Services (Americare)
  • Gateway Health Plan
  • Geisinger Health 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
  • Keystone First Medicare
  • Multiplan
  • NJ Medicaid
  • NJ Qualcare
  • Oxford Health Plan
  • PA Medicaid
  • PA Medicare
  • Preferred Health Care/LGH
  • Rail Road Medicare / Palmetto GBA
  • Remedy Partners at Penn Medicine
  • 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 and Interventional Radiology Society, Local 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 employed by Penn Medicine.

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, Watts Micah M: Percutaneous Femoropopliteal Recanalization Using a Completely Transpedal/Transtibial Approach. Cardiovascular and interventional radiology : 2016.

Hsu Michael C, Weber Charles N, Mohammed Mustafa A, Gade Terence P, Hunt Stephen, Nadolski Gregory J: Thermal Changes during Rheolytic Mechanical Thrombectomy. Journal of vascular and interventional radiology : JVIR 27 (6): 905-12,2016.

Madoff David C, Gaba Ron C, Weber Charles N, Clark Timothy W I: Portal Venous Interventions: State of the Art. Radiology 278 (2): 333-53,2016.

Chen James X, Maass Daniel, Guzzo Thomas J, Bruce Malkowicz S, Wein Alan J, Soulen Michael C, Clark Timothy W I, Nadolski Gregory J: Tumor Growth Kinetics and Oncologic Outcomes of Patients Undergoing Active Surveillance for Residual Renal Tumor following Percutaneous Thermal Ablation. Journal of vascular and interventional radiology : JVIR 27 (9): 1397-406,2016.

Tom Lisa M, Palevsky Harold I, Holsclaw Douglas S, Trerotola Scott O, Dagli Mandeep, Mondschein Jeffrey I, Stavropoulos S William, Soulen Michael C: Recurrent Bleeding, Survival, and Longitudinal Pulmonary Function following Bronchial Artery Embolization for Hemoptysis in a U.S. Adult Population. Journal of vascular and interventional radiology : JVIR 26 (12): 1806-13.e1,2015.

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: Initial Clinical Experience: Symmetric-Tip Dialysis Catheter with Helical Flow Characteristics Improves Patient Outcomes. Journal of vascular and interventional radiology : JVIR 26 (10): 1501-8,2015.

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: 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, McCann Jeffrey W, Salsamendi Jason, Dowd Michael F: 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: Do quantitative angiographic changes in infrageniculate perfusion predict clinical success following percutaneous revascularization? J. Vasc Interv Radiol, SIR Annual Meeting, San Diego, CA : 2014.

Hecht Elizabeth M, Do Richard K G, Kang Stella K, Bennett Genevieve L, Babb James S: 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.

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
Patient appointments: 800-789-7366 (PENN)