Current Residents


Walaa Alshuaibi, M.D.

Dr. Alshuaibi received her M.D. degree from the King Saud University Riyadh College of Medicine, and did her Pediatric training at Children's National Medical Center in Washington D.C. Her residency research project was studying metabolic rates in patients with inborn errors of metabolism at baseline, and while ill. She also presented a quality improvement project of Safety and Discharge Planning at Tufts Medical Center. She is an avid reader!


Heather Byers, M.D.

Dr. Byers received her M.D. with Distinction in Research and Distinction in Service from the University of Iowa Carver College of Medicine and did clinical training in OB-GYN at UT-Southwestern in Austin, TX. As a medical student, she studied the epidemiology and genetics lipids in pregnancy as a Doris Duke Clinical Research Fellow. Her research mentor was Dr. Kristi Borowski. She also participated in the Iowa Medical Student Research Program under the mentorship of Dr. Jeff Murray. Her project was on genetics of preterm birth and genetics of persistent pulmonary hypertension of the newborn. This project was funded by the Bill and Melinda Gates Research Foundation. She lived in Spain (and is fluent in Spanish) and Australia prior to moving to Seattle.


Irene J. Chang, M.D.

Dr. Chang received her M.D. from the University of Miami Miller School of Medicine, and spent a year in Beijing, China as a Fogarty Global Health Pre-Doctoral Fellow working on HPV education and occurrence of cervical cancer. She did an internship in OB-GYN in Honolulu, HI, prior to beginning her genetics residency.


Andrew P. Dervan, M.D., M.B.A.

Dr. Dervan received his M.D. and M.B.A. degrees from Harvard Medical School and Harvard University, and did his Internal Medicine training in Seattle at the University of Washington Medical Center. During graduate school he studied the business models of molecular diagnostic companies. He is interested in the translation of genetic and genomic discoveries into new therapeutic and diagnostic tools, and in precision medicine.


Prasit "Joe" Phowthongkum, M.D.

Dr. Phowthongkum received his M.D. from the Chulalongkorn University Faculty of Medicine in Thailand, and did his clinical training in Internal Medicine in Thailand, as well as at Albert Einstein Medical Center in Philadelphia, PA. His research interests are in Neurogenetics, and he did graduate work at the Wellcome Trust Centre for Human Genetics in Oxford.

Senior Fellow


Sirisak Chanprasert, M.D.

Dr. Chanprasert received his M.D. from the Faculty of Medicine, Siriraj Hospital at Mahidol University in Thailand, and completed Internal Medicine residency at Bassett Medical Center in Cooperstown, NY, followed by residency in Medical Genetics and fellowship in Medical Biochemical Genetics at Baylor College of Medicine in Houston, TX. He has been a co-investigator for clinical trials of metabolic diseases, and participated in research on glucose kinetics, arginine flux and NO production in MELAS. He is doing an academic/research fellowship year in Mitochondrial Diseases in the lab of Drs. Marge Sedensky and Phil Morgan, and mitochondrial medicine with Dr. Russ Saneto with the support of the Mitochondrial Research Guild of Seattle Children's Hospital.