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Residents

PGY-5 Residents

Andrew Leiker, M.D., Chief Resident

Andrew Leiker, M.D.

Undergraduate Education: Fort Hays State University
Medical School: Medical College of Wisconsin

Research Year
During my PGY-4 year, I completed an MPH in biostatistics along with departmental retrospective research as a lead into prospective trial development.

Travis Mendel, M.D., Chief Resident

Travis Mendel, M.D.

Undergraduate Education: University of Puget Sound
Medical School: Texas Tech University Health Sciences Center

Research Year
My PGY-4 year consisted of advanced SRS training utilizing CyberKnife and Gamma Knife, as well as prostatic brachytherapy and IORT. During my allotted research time, I analyzed patients treated with the Gamma Knife ICON to help establish effective treatment paradigms.

Sam Schroeder, M.D., Chief Resident

Sam Schroeder, M.D.

Undergraduate Education: University of Denver
Medical School: University of Iowa College of Medicine

Research Year
During my PGY-4 year, I earned an MBA degree at UT Dallas to complement research investigating outcomes, practice patterns, and economic impact associated with hypofractionated radiation treatment.

PGY-4 Residents

Bhavani Gannavarapu, M.D.

Bhavani Gannavarapu, M.D.

Undergraduate Education: Northwestern University
Medical School: UT Southwestern

Research Plans
My PGY-4 year will incorporate a range of brachytherapy research projects and clinical experiences across North America. In addition to investigating the use of brachytherapy in novel settings, I will also work to define optimal strategies for the treatment of high-risk prostate cancer. These latter efforts will be done through the analysis of multi-institutional data and through the development of clinical trials comparing outcomes between stereotactic ablative radiotherapy (SAbR/SBRT) and brachytherapy combined with external beam radiotherapy.

Yuanyuan "Faith" Zhang, M.D., Ph.D.

Faith Zhang, M.D., Ph.D.

Undergraduate Education: Cornell University
Medical School: UT Southwestern (M.D./Ph.D. track)

Research Plans
As a Holman Pathway Resident, I am allotted additional research time. During this time, I will study how immunometabolism in tumor microenvironment impacts cancer therapy response. In my research, I use molecular, biochemical and multiomics approaches to characterize normal tissue, tumor and immune cell response to radiation modulated by superoxide dismutase mimetic, GC4419 (currently fast tracked for FDA approval as a normal tissue protector) using head and neck cancer models. I will also collaborate with clinical faculty members to develop clinical trials to validate and complement my lab work. I am co-mentored by Michael Story, Ph.D., Professor and Vice Chair, and Director of the Division of Molecular Radiation Biology and Ralph DeBerardinis, M.D., Ph.D., Professor and Chief of the Division of Pediatric Genetics and Metabolism.

Yaochung "Wesley" Weng, M.D., Ph.D.

Wesley Weng, M.D., Ph.D.

Undergraduate Education: Cornell University
Graduate Education: Massachusetts Institute of Technology, Ph.D., Computational and Systems Biology
Medical School: UT Southwestern 

Research Plans
In my PGY-4 year, I will engineer, develop, and implement an electronic device to increase treatment compliance, better the experience at the radiation treatment facility, and improve overall patient satisfaction with radiotherapy. 

PGY-3 Residents

Mark McLaughlin, M.D., Ph.D.

Mark McLaughlin, M.D.

Undergraduate Education: University of Notre Dame
Graduate Education: University of Missouri-Columbia
Medical School: Baylor College of Medicine

Howard Morgan, M.D.

Howard Morgan, M.D.

Undergraduate Education: Louisiana Tech University
Medical School: Louisiana State University School of Medicine

Samer Salamekh, M.D.

Samer Salamekh, M.D.

Undergraduate Education: University of Michigan - Ann Arbor
Medical School: Ohio State University College of Medicine

Elizabeth Ren Zhang-Velten, M.D., Ph.D.

Elizabeth Ren Zhang-Velten, M.D., Ph.D.

Undergraduate Education: Massachusetts Institute of Technology
Graduate School: UT Southwestern
Medical School: UT Southwestern


PGY-2 Residents

Sean All, M.D.

Sean All, M.D.

Undergraduate Education: University of Florida
Medical School: University of Central Florida

Michael Dohopolski, M.D.

Michael Dohopolski, M.D.

Undergraduate Education: University of Notre Dame
Medical School: University of Pittsburgh

Salman Eraj, M.D.

Salman Eraj, M.D.

Undergraduate Education: Rice University
Medical School: UT Health Science Center Houston

Sujana Gottumukkalla, M.D., MPH

Sujana Gottumukkalla, M.D., MPH

Undergraduate Education: Dartmouth College
Graduate School: University of Texas School of Public Health
Medical School: UT Southwestern


Incoming 2020-2021 Residents

Michael Christensen, M.D.

Michael Christensen, M.D.

Dr. Christensen received his bachelor's degree in neuroscience from Brigham Young University and his medical degree from the University of Utah School of Medicine. He completed his transitional internship at Riverside Community Hospital in California. His research interests include primary central nervous system malignancies and he will be involved in outcomes-based and image-guided research in the Department.‚Äč

Ambrosia Simmons, M.D, Ph.D.

Ambrosia Simmons, M.D., Ph.D.

Dr. Simmons received her bachelor's degree in chemical engineering from the University of Michigan. She received her medical degree and Ph.D. from Temple University School of Medicine in Philadelphia, where she studied neural development and cell cycle regulation of neural stem cells. She completed her transition year internship at St. Luke’s University Hospital in Bethlehem, Pennsylvania. Her research interests include understanding the effects of radiation on the developing nervous system to improve patient outcomes and safety. Her other interests include medical student education.

Allen Yen, M.D.

Allen Yen, M.D./

Dr. Yen received his medical degree from UT Southwestern Medical Center where he is continuing his residency in the Department of Radiation Oncology. While he was a medical student, Dr. Yen conducted research on risk factors for fistula formation after interstitial brachytherapy for gynecologic malignancies under the guidance of Kevin Albuquerque, M.D., FACR, Professor, Director of Quality Improvement/Quality Assurance, and team lead of the Department’s gynecological disease-oriented team. This research was ultimately published in the Journal of Contemporary Brachytherapy. Dr. Yen is originally from Oklahoma where he originally pursued chemical engineering at the University of Oklahoma, but ultimately decided to pursue medicine.