About Us

Meet the PI

Dr. Castrillon in white coat in office
Diego Castrillon, M.D., Ph.D.

Diego H. Castrillon,
M.D., Ph.D.

Dr. Castrillon is a tenured Associate Professor in the Department of Pathology at UT Southwestern. He was born in San Juan, Puerto Rico, and grew up in Edinburg, Texas. He earned his bachelor’s degree in Life Sciences at MIT and M.D./Ph.D. degrees at UT Southwestern.

He completed his residency in Anatomic Pathology at Harvard Medical School and Brigham and Women’s Hospital. He then completed a clinical fellowship there in Obstetric and Gynecologic Pathology with Dr. Christopher Crum, followed by a research fellowship at the Dana Farber Cancer Institute with Dr. Ron DePinho. He is board certified in Anatomic Pathology and is a pathologist at Parkland and Clements University Hospital with the Gynecologic Pathology Division, directed by Dr. Wenxin Zheng. His clinical specialty is the diagnosis of obstetric and gynecologic diseases, with a clinical and research emphasis on endometrial cancers and precancers.

Dr. Castrillon is a member of the American Society for Clinical Investigation and has received numerous honors including Sidney Kimmel and American Cancer Society Scholar awards. He has served on many study sections and review panels of the National Cancer Institute and other NIH institutes. He is a consulting editor on the Journal of Clinical Investigation and the International Journal of Gynecologic Pathology.

At UT Southwestern, he serves on the Steering Committees of the Medical Scientist Training Program (MSTP) and the Cancer Biology Graduate Program.

Dr. Castrillon is married with a son and daughter, ages 11 and 15. He enjoys traveling and spending time with friends and family.