Residents

Current Residents

PGY-5 Residents

Dan Ishihara, M.D., Ph.D.

Dan Ishihara, M.D., Ph.D.

Undergraduate Education: Johns Hopkins University
Graduate Education: Albert Einstein College of Medicine
Medical School: Albert Einstein College of Medicine

I was born and raised in Tokyo, Japan. I attended high school in British Columbia, Canada, followed by Johns Hopkins University in Baltimore for my undergraduate degree in neuroscience. I attended Albert Einstein College of Medicine in the Bronx for their Medical Scientist Training Program, where I was involved in tumor immunology research. Additionally, I was in charge of the operation of a student-run clinic for the uninsured at our affiliated hospital during my research years. I completed a transitional year internship with the University of Hawaii before joining UTSW.

 

Steven Lau, M.D., Ph.D.

Steven Lau, M.D., Ph.D.

Undergraduate Education: Washington University in St. Louis
Graduate Education: University of California, San Diego; University of Cambridge
Medical School: University of California, San Diego

I graduated summa cum laude from Washington University in St. Louis, followed by studying genomics at the University of Cambridge. I attended medical school at the University of California San Diego, where I also completed a doctorate in cell signaling and carcinoma cell metastasis. I served a transitional year internship at the University of Hawaii before joining UTSW.

 

Vasu Tumati, M.D.

Vasu Tumati, M.D. (Chief Resident)

Undergraduate Education: Indiana University
Medical School: New York Medical College

I grew up in Pittsburgh, PA and received my undergraduate degree in biochemistry from Indiana University. I attended medical school at New York Medical College. During medical school, I participated in the Doris Duke Clinical Research Fellowship at UTSW. I completed a preliminary medicine year at Norwalk Hospital in Connecticut before returning to UTSW.

 

PGY-4 Residents 

Ryan Jones, M.D.

Ryan Jones, M.D.

Undergraduate Education: University of Virginia
Medical School: University of Virginia School of Medicine

I was born and raised in Danville, Virginia, and attended the University of Virginia for undergraduate and medical school. I completed a preliminary medicine year with Presbyterian Hospital of Dallas before joining UT Southwestern’s Radiation Oncology Residency program. My small-town upbringing opened my eyes to access-to-care and healthcare quality issues, and I am now focused on work in clinical operations with the goal of one day running a large radiation oncology system or cancer center.

 

Osama Mohamad, M.D., Ph.D.

Osama Mohamad, M.D., Ph.D.

Undergraduate Education: American University of Beirut
Graduate Education: Emory University, Ph.D., Neuroscience, stem cell research
Medical School: Emory University School of Medicine

I was born and raised in Beirut, Lebanon, and received my undergraduate degree in Biology from the American University of Beirut. I then attended the M.D./Ph.D. program at Emory University, where I was involved in translational research in regenerative neuroscience. My thesis involved reprogramming human skin cells to stem cells and then genetically engineering them to express light sensors. After inducing neuronal differentiation and using optogenetics, we tested the integration of transplanted cells into host neural networks in stroke mice. I also received a Howard Hughes Medical Institute Fellowship award and completed a certificate program in clinical and translational research. After Emory, I completed a transitional year internship at the University of Hawaii before joining UT Southwestern’s Radiation Oncology Residency program.

 

Dat Vo, M.D., Ph.D.

Dat Vo, M.D., Ph.D.

Undergraduate Education: University of Texas at Austin
Graduate Education: University of Texas Health Science Center at San Antonio, Ph.D., Genetics, Genomics, and Development
Medical School: University of Texas School of Medicine at San Antonio

I was born in Wichita, Kansas and was raised in Fort Worth, Texas. I received my undergraduate degree in biochemistry from The University of Texas at Austin. I attended graduate school and medical school at the University of Texas Health Science Center at San Antonio in the combined M.D./Ph.D. program. For my graduate studies, I studied post-transcriptional gene regulation in glioblastoma using a systems-based approach. I completed a transitional year internship in my hometown of Fort Worth at John Peter Smith Hospital before joining UTSW.

 

PGY-3 Residents 

Andrew Leiker, M.D.

Andrew Leiker, M.D.

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

I was born and raised in Hays, Kansas, and received my bachelor's degree in physics from Fort Hays State‚Äč University in Kansas. I went on to attend medical school at the Medical College of Wisconsin, where I had an opportunity to work on various oncology research projects. With my interest piqued by my research experience at MCW, I participated in the year-long NIH-Medical Research Scholars Program between my third and fourth years of medical school and performed lab research in the radiation biology branch of the NCI.  I then completed an internship in internal medicine at Parkland Hospital prior to joining UTSW. 

 

Travis Mendel, M.D.

Travis Mendel, M.D.

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

I am from El Paso, Texas. After completing my undergraduate biochemistry degree at Puget Sound in Tacoma, Washington, I returned to El Paso where I received my medical degree from Paul L. Foster School of Medicine. During medical school, I was involved with laboratory-based research and horseback therapy for kids with special needs. I completed my internship at Tucson Medical Center prior to beginning my radiation oncology residency at UTSW.

 

Sam Schroeder, M.D.

Sam Schroeder, M.D.

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

I was born and raised in Des Moines, Iowa, and received my undergraduate degree in biochemistry from the University of Denver. I returned home for medical school at the University of Iowa (go Hawks!), where I was involved in translational research and clinical trial development. I stayed at Iowa to complete my internship before joining UTSW.

 

PGY-2 Residents 

Bhavani Gannavarapu, M.D.

Bhavani Gannavarapu, M.D.

Undergraduate Education: Northwestern University
Medical School: UT Southwestern

I was born in southeastern Oklahoma, but was primarily raised in Dallas, Texas. I received my undergraduate education from Northwestern University, where I majored in both political science and biology. As an undergraduate, I received funding from Northwestern to travel to India and interview political actors in order to study the politics of regional state formation. I later received my medical degree from UT Southwestern. During medical school, I was awarded a grant from the NIH in order to perform clinical studies of cancer cachexia. With the assistance of our institution’s tumor registry, I created a database of nearly 4,000 patients who presented to our institution with lung and gastrointestinal malignancies in support of this research. I completed my internship in internal medicine at Presbyterian Hospital of Dallas prior to joining UTSW.

 

Yuanyuan “Faith” Zhang, M.D., Ph.D.

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

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

I was born and raised in China. I received my undergraduate degree in nutritional sciences from Cornell University. After graduating from college, I pursued neuroscience research at the Rockefeller University with Dr. Greengard for two years before joining the Medical Scientist Training program at UT Southwestern. For my Ph.D. research, I studied the role of liver autophagy in glucose homeostasis with Drs. Brown and Goldstein.  In addition, I initiated and worked on a leadership program (Student Emerging Academy of Leaders) to prompt careers in science and medicine, especially among minorities and women. I completed a transitional year internship at Memorial Sloan Kettering Cancer Center in New York City before joining UTSW.

 

Yaochung “Wesley” Weng, M.D., Ph.D.

Yaochung “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

I immigrated to the United States at the age of seven and grew up in Plano, Texas. I attended the Cornell University for undergraduate studies in electrical engineering. Later, I received a Ph.D. from the Massachusetts Institute of Technology and an M.D. from UT Southwestern Medical School. I completed an intern year at The Christ Hospital in Cincinnati, Ohio, prior to joining the medical residency program at UTSW.