Over 100 full-time faculty in the Department of Medicine are involved in the teaching program. All faculty members at each of our three training facilities have faculty appointments at Loma Linda University School of Medicine. The staff includes general internists and internists in the subspecialties of adolescent medicine, allergy, cardiology, clinical pharmacology, critical care, endocrinology, gastroenterology, geriatrics, hematology, infectious disease, intensive care medicine, nephrology, oncology, pulmonary medicine and rheumatology.

Douglas Hegstad, M.D., MACP



Samuel Baz, M.D., FACP

Program Director

Dr. Baz graduated from Yale University in 1990. He attended medical school at the University of Southern California (USC) from 1993 1997. He completed residency in Internal Medicine at Loma Linda University in 2000 and served as Chief Medical Resident at Riverside County Regional Medical Center in the 2000 2001 academic year. He worked in Illinois as an attending physician before he returned to Loma Linda as an attending at Veterans Administration Medical Center (VAMC). Since then, he has served the program as Key Clinical Faculty, Associate Program Director and currently, as Program Director.

Van Geslani, M.D.

Associate Program Director


Amy Schill-Depew, M.D.

Associate Program Director

Dr. Schill-Depew graduated from Southwestern Adventist University in 2000 with a degree in biology and received her MD from Loma Linda University. She was Chief Medical Resident at Jerry L. Pettis Memorial VA Medical Center after completing residency in 2007. Dr. Schill-Depew has been quite active in resident education and recruiting.

She is also the current director of the continuity clinic at the VA's Redlands Blvd Outpatient Clinic. She has been instrumental in many of the innovations that have been developed there. Some examples include the training program in quality improvement and patient safety as well as the training of the residents in the principles of the patient-aligned care team (PACT), the VA's version of the patient-centered medical home.

Minho Yu, D.O.

Associate Program Director


Dr. Yu received his Bachelors degree from UCSD, went on to medical school at the Western University of Health Sciences, in Pomona, CA. He was a star resident in internal medicine program at Loma Linda, and later served as a chief medical resident at Riverside County Regional Medical Center during the 2007-2008 academic year. He has been an attending physician there since that time.

In 2011, he was appointed to the APD position and has served in that capacity very well. Dr. Yu is dedicated to the development of residents as skilled physicians, and emphasizes evidence-based care. Our office receives much unsolicited praise for his teaching ability as an attending on the RCRMC ward service. Additionally, he leads teaching sessions at the Simulation Lab on campus.

Shawn Koh, M.D. 

Dr. Koh graduated from La Sierra University in 2004 with a degree in biology and received his MD from Loma Linda University in 2008. A huge fan of the Inland Empire, he stayed on at Loma Linda University Medical Center for his IM residency and then completed a year of chief residency at the VA in 2012.

He is enjoying his primary care practice at the Loma Linda VA's Redlands Blvd Outpatient clinic, where he promotes interest and exposure to general internal medicine through his role as core faculty of the primary care track. He has much experience and talent in teaching whole-person care. His experience at international sites enables him to advise residents in arranging their experiences abroad.

Lawrence K. Loo, M.D., MACP

Dr. Loo graduated from the University of San Diego (UCSD)  in 1981. He completed his Internal Medicine residency in 1984 and has served as a Chief Resident a the  L. Pettis VA Medical Center from 1984-1985.

Dr Loo is a physician educator, who is committed to building strong educational programs that foster the development and growth of physicians along the professional continuum starting first in medical school, transitioning to residency and throughout the rest of a physician’s professional life by facilitating continuing medical education and self-directed learning.  He has serviced a s the governor of the Southern California region II from 2004-2008 and  he is currently the Vice Chair for education and faculty development  and the Assistant Dean for Continuing Medical Education. 

Sonny Lee, M.D., FACP

Program Director for combined Medicine-Pediatrics,
Associate Program Director Internal Medicine Program 

After graduating from New York Medical College in 1999, Dr. Lee completed his residency in the combined internal medicine and pediatrics residency program (Med-Peds) at Loma Linda University Medical Center and Childrens Hospital in 2003.

He took on the role of Associate Program Director of the Med-Peds program in 2004. He assumed his current role as Program Director of the Med-Peds residency program at Loma Linda in 2008. He graduated from UC Berkeley in 1993 with a degree in chemistry