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Timothy J. Niesen, MD Physician

Clinical Assistant Professor of Radiology

Niesen is employed by Penn Medicine.

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Clinical Specialties


  • Radiology

Programs & Centers:

Board Certification:

  • Radiology, 2018

Clinical Expertise:

  • Angiography
  • Arthrogram
  • Aspiration
  • Biopsy
  • CT Scan (Computed Tomography)
  • CT Scan Guided Biopsy
  • CT Scan Guided Injection
  • CTA (Computed Tomography Angiography)
  • Diagnostic Imaging
  • Diagnostic Test
  • Dilation
  • Elastography
  • Fistulogram
  • Fluoroscopy
  • Insufficiency Fracture
  • Lesion of Testis
  • Lung Cancer Screening
  • Magnetic Resonance Venography (MRV)
  • Minimally Invasive Surgery
  • MRA (Magnetic Resonance Angiography)
  • MRI (Magnetic Resonance Imaging)
  • MRI Guided Biopsy
  • Musculoskeletal Tumor
  • Nuclear Imaging
  • Pyelogram
  • Renal Mass
  • Stent Placement
  • Steroid Injection
  • Ultrasound
  • Ultrasound Guided Biopsy
  • Ultrasound Guided Injection
  • Urogram
  • Venography
  • X-Ray
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Practice Locations and Appointments

Insurance Accepted

  • Aetna US Healthcare
  • Amerihealth Caritas
  • Amerihealth Caritas Medicare
  • Cigna
  • Cigna HealthSpring
  • Clover Health Plan
  • CVS Health
  • Devon Health Services (Americare)
  • eLAP Services
  • Gateway Health Plan
  • Geisinger Health Plan
  • HealthAmerica / HealthAssurance, a Coventry Plan
  • HealthPartners
  • HealthPartners Medicare
  • HealthSmart
  • Highmark Blue Shield
  • Homestead Smart Health Plans
  • 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 Health and Wellness (Centene) Medicare
  • PA Medicaid
  • PA Medicare
  • Preferred Health Care/LGH
  • Provider Partners Health Plan
  • Rail Road Medicare / Palmetto GBA
  • Remedy Partners at Penn Medicine
  • Tricare
  • United Healthcare
  • UnitedHealthcare Community Plan
  • US Family Health Plan
  • Veterans Choice Program
  • Vibra Health Plan

Education and Training

Medical School:
Residency: Christiana Care
Fellowship: Johns Hopkins Hospital


American College of Radiology, National Radiologic Society of North America, National Society of Interventional Radiology, National

Hospital Affiliation

Niesen is employed by Penn Medicine.

Hospital Privileges:

  • Chester County Hospital: Has privileges to treat patients in the hospital.
  • Hospital of the University of Pennsylvania: Has privileges to treat patients in the hospital.
  • Pennsylvania Hospital: Has privileges to treat patients in the hospital.


Selected Publications:

Timothy J. Niesen, MD, Nathan Finch, MD, Mandip Gakhal, MD, Robert M. Dressler, MD, Howard M. Levy, MD.: Value of prior imaging review before ordering renal sonography in the evaluation of abnormal renal function. Journal of Clinical Ultrasound 45 (9): 537-541,2017.

Assaf Graif, Timothy Niesen, Mandip Gakhal, George Kimbiris, Demetrios Agriantonis, Randall Ryan, Daniel Leung.: Comparison of Percutaneous Ultrasound-Accelerated Endovascular Thrombolysis with Pigtail Catheter Directed Thrombolysis in Patients with Acute Pulmonary Embolism. Society Interventional Radiology Annual Meeting Presentation : 2016.

Timothy Niesen, MD, Shoheb Farooqui, MD, Daniel Maloney, DO, Christopher DeMauro, MD: Improving Patient Safety and Clinical Response to Patient Adverse Reactions to Iodinated Contrast within the Christiana Care Health System. Delaware Radiological Society Annual Meeting : 2015.

Wrigley CW, Vance A, Niesen T, Grilli C, Velez JD, Agriantonis DJ, Kimbiris G, Garcia MJ, Leung DA.: Endovascular recanalization of native chronic total occlusions in patients with failed lower-extremity bypass grafts. J Vasc Interv Radiol 25 (9): 1353-9,2014.

Niesen T: Gastrostomy Tube Placement: Various Complications and Imaging Findings. Drexel University College of Medicine : 2010.

Academic Contact Info

Chester County Hospital
Department of Radiology
Division of Community Radiology/Interventional Radiology
701 E. Marshall Street

West Chester, PA 19380
Patient appointments: 800-789-7366 (PENN)