Medical Students

We participate in the National Residency Match Program and utilize the Electronic Residency Application Service (ERAS).


  • Program Director, Medical Residency Program
  • Program Director, Medical Education Clerkship
  • Professor, Radiation Oncology

Program Contact

Name: Phyllis Lewis
Position: Education Coordinator

111 S. 11th Street
Bodine Cancer Center - Gibbon
Philadelphia, PA 19107

Contact Number(s):

Carl M. Mansfield, MD Externship

The Carl M. Mansfield, MD Externship is designed for medical students considered underrepresented in medicine. Its goal is to encourage those underrepresented in medicine to consider Radiation Oncology as a field of specialty.

Dr. Mansfield started his career at Howard University and Medical School and became a beloved physician and educator. He was a trailblazer in the field of Radiation Oncology best known for his innovative treatments of breast cancer. Dr. Mansfield had a great desire to ensure that students were aware of what they could accomplish in the medical field and allowed students to work with him and others towards this goal.

Studies show that patients are more likely to participate in their own healthcare and in clinical trials if they are approached by a healthcare provider who is of their own race or ethnicity. If Jefferson truly wants to move the needle on health equity in Philadelphia — a city that is incredibly diverse and where, notably, 42% of the population is Black or African American — it is vital that we also increase the numbers of underrepresented minority trainees with the opportunity and support they need to pursue exposure to the field of radiation oncology.

If a medical school rotation during the 4th year is requested, the application deadline does not apply.

Contact Information

Sara Burke
Program Coordinator
Sidney Kimmel Comprehensive Cancer Center

2024 Carl M. Mansfield, MD Externs

  • Babacar Fall - Sidney Kimmel Medical College
  • Tolulope Ilore - Cooper Medical School of Rowan University
  • Guillermo Jimenez Jordan - Ponce Health Sciences University
  • Lauren Nkwonta - Touro College of Osteopathic Medicine
  • Liz Laura Leyva Vera - Sidney Kimmel Medical College

2023 Nicole Baker, Ashley Coleman & Cameo Hazlewood

2022 Siani Harding


Open to first-year medical students.


We are able to provide each extern with a stipend. We are not able to provide any assistance with travel, housing, meals, or other expenses.


Students are required to conduct research on-site in the Department of Radiation Oncology in Center City Philadelphia for at least 6-8 weeks. We are unable to accommodate virtual research options, nor a term shorter than 6 weeks.

Students are expected to present their research at the annual Department of Radiation Oncology Research Symposium, which takes place in the fall, following the summer externship.

How to Apply

To apply for a Radiation Oncology Summer Externship, we require the following three items (compiled into a .pdf file) to be emailed to Sara Burke, Program Coordinator, Sidney Kimmel Comprehensive Cancer Center.

  1. Your application (Summer 2025 Applications will be released in Fall 2024)
  2. Your CV
  3. A cover letter with a statement of interest as to why you are interested in radiation oncology research and how this program may help your medical career.