PC Program Leadership

Program Director and Assistant Directors

Chacko_KarenKaren Chacko, MD was born and raised in the San Francisco Bay Area. She attended undergraduate and medical school at UC San Diego. She completed her internship, residency and chief residency here at the University of Colorado in the Primary Care track. She has been GIM faculty here since completing her training. Karen enjoys hiking, running, camping, biking and cooking with her two beautiful girls and husband.

Dr. Chacko is the Program Director of the Primary Care Program and also serves as the senior Associate Program Director of the Internal Medicine Residency Program.


Cleeves_MichelleMichelle Cleeves, MD is originally from Boulder, CO and graduated from the University of Colorado School of Medicine. She did her residency at Montefiore Medical Center in the Bronx, NY in the Social Internal Medicine program. After finishing residency in 2012, she returned to Colorado and joined the Division of General Internal Medicine at Denver Health. Michelle has strong interests in underserved populations and Women’s Health. She joined the leadership of the Primary Care track as director for journal clubs and video review curriculum. Michelle enjoys camping, hiking, rafting, and cooking.



Frank_JoeJoe Frank, MD, MPH attended medical school at Indiana University, and completed a Primary Care/Internal Medicine Residency and Chief Residency at Brown University in Providence, RI. He then pursued a General Internal Medicine Fellowship at Brigham and Women’s Hospital and an MPH at the Harvard School of Public Health. Joe joined the faculty at the University of Colorado in 2013. Joe is a primary care physician at the Denver VA Medical Center and the Co-Director for Research for the Primary Care Residency Program. His work focuses on chronic pain management and opioid safety in primary care. Joe enjoys running, camping, hiking and (one day) skiing with his wife and three young children.


Nicklas_JacindaJacinda Mawson Nicklas, MD, MPH, MA grew up in Woodside, California. She completed her BA in Human Biology and her MA in Anthropology at Stanford University. She received her MD from Harvard Medical School and completed her residency in Internal Medicine and Primary Care at Brigham and Women's Hospital in Boston, Massachusetts. She received her MPH from the Harvard School of Public Health and completed her clinical research fellowship in Integrative Medicine and General Medicine at Harvard Medical School. Her research focuses on women’s health, obesity, lifestyle change, and disease prevention. Her current research uses websites and mobile apps to help postpartum women who are at elevated risk for diabetes and heart disease. Outside of medicine she enjoys spending time with her husband and three children as well as running, skiing, hiking, swimming, and cycling. Dr. Nicklas is the co-director of Primary Care Research and oversees PC resident research projects.


Sacro_YasminYasmin Sacro, MD was born in San Diego, California and graduated from the University of Chicago Pritzker School of Medicine. She completed her residency and chief year in internal medicine at Scripps Mercy Hospital in San Diego. She then served as a core faculty member at the University of Chicago for 5 years and is also a National Health Service Corps Member. She joined the Division of General Internal Medicine at Denver Health in 2015 where her primary interests include underserved populations, diversity, and medical education. Outside of medicine Dr. Sacro spends her time reading, trying the latest exercise boutique fad, enjoying cultural arts, and running after her 2 young kids. Dr. Sacro oversees the HIV training program and underserved care for the primary care track, and the director of graduate medical education in General Internal Medicine at Denver Health. 


White_KellyKelly White, MD is originally from New York and attended Vassar College as an undergraduate. She completed medical school from the University of Colorado School of medicine where she graduated AOA. She completed internship and residency at the University of Colorado in the primary care track, and has been on faculty since completing training. Kelly and her husband Sam are proud parents of three children. Kelly's outside interests include spending time with her family, skiing, hiking, running, and traveling. Dr. White is the didactic curriculum director for the primary care track and serves as a faculty mentor to many primary care residents.