Colleen H. Tetzlaff, MHS, PA-C

Colleen Tetzlaff

Clinical Locations

Primary Location

Fox Chase Cancer Center
333 Cottman Avenue
Philadelphia, PA 19111


Advanced Practice Clinician

Physician Assistant

Treatment Philosophy

It has been a privilege to care for cancer patients and their families as a Physician Assistant at Fox Chase Cancer Center since 2009.  As a Physician Assistant, I collaborate with Attending Physicians to provide compassionate, evidence-based care to patients with prostate, kidney, bladder, penile, adrenal and testicular cancers. 

My passion for oncology began when I was a nurse and cared for postoperative cancer patients on an inpatient surgical floor, followed by nursing in an outpatient surgical oncology clinic.  I entered the Duke University Physician Assistant Program knowing that I wanted to make a difference in the lives of cancer patients and become a part of the dynamic and fast-growing oncology field. 

At Fox Chase Cancer Center, we are fortunate to work with outstanding researchers that enable us to offer patients novel therapies on clinical trials.  Actively being a part of the trials that are changing how we treat cancer is exciting and invigorating.   I strive to support not only the patient, but their entire family and support network, throughout all phases of their cancer.  I am honored to be a part of the genitourinary medical oncology team and privileged to care for such inspiring patients and families every day.

Education and Training

Educational Background

  • Master of Health Sciences, Physician Assistant Certificate of Completion, Duke University Physician Assistant Program, Durham, NC, 2004
  • Bachelor of Science in Nursing, Cum Laude, Villanova University, Villanova, PA, 1996


  • National Commission on Certification of Physician Assistants, Physician Assistant - Certified, 2004 - Present
  • Physician Assistant - Certified, Pennsylvania State License


  • American Academy of Physician Assistants
  • Pennsylvania Society of Physician Assistants
  • Association of Physician Assistants in Oncology

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