YHC Leadership Board

Kathryn Boyd-Trull, MD

Dr. Kathryn Boyd, MD, is not only an assistant professor at the esteemed University of Colorado's Family Medicine Department, but also a compassionate co-founder and CEO of Yahweh Health Care, YHC. Her commitment to aiding individuals on the brink of homelessness, or those already experiencing it, was a driving force behind her decision to pursue a medical career. In 2014, she established YHC with the sole purpose of serving this vulnerable population. Throughout the past decade, Dr. Boyd has actively collaborated with various community-focused programs and organizations, earning her the reputation as the go-to person in the community when all other options seem exhausted. Dr. Kathryn Boyd's passion for providing care to those in need is evident in her active involvement in attending outreach events and offering essential care to individuals she encounters in her daily life. Moreover, Dr. Boyd is deeply committed to educating future generations about the critical importance of delivering healthcare to individuals experiencing homelessness. She encourages students to think creatively and find innovative solutions to address health disparities.

Scott Harpin, MD

Scott Harpin is a Professor of Nursing and Maternal-Child Health Division Chair at the University of Colorado College of Nursing. Scott is also the director of the DNP/MPH Dual Degree and DN-PHN programs at CU NUrsing and is a faculty advisor to the CU Street Medicine Student Interest Group. Scott is a public health nurse at heart and spends his time teaching and working on research. His research focus is health outcomes and mental health promotion of vulnerable adolescent and young-adult populations, specifically runaway/homeless youth and those transitioning out of foster care.  Areas of teaching include epidemiology, health promotion, nursing research, psychiatric nursing, and public health nursing.

Cristina Rebaza, MD

Cristina Rabaza is an associate professor at University of Colorado within the Family Medicine Department. Cristina practices full scope family medicine, “from the womb to the tomb,” spending her clinical time on the inpatient hospital service, in clinic, on labor & delivery, doing c-sections, and in the newborn nursery. She spends much of her time teaching residents and med students as well as assisting with recruitment for the residency, with an interest in those under-represented in medicine. Born and raised in Miami, Florida, after her family emigrated from Cuba, she was especially drawn to Denver's Hispanic community and found herself using her native language of Spanish as a tool to bridge health literacy disparities among her fellow Latinos.

Jonathan Trull

Jonathan Trull, NPA, is a highly accomplished professional serving as the Chief Security Officer and Head of Solutions Architecture at Qualys, a renowned provider of cloud-based security and compliance solutions. In addition to his pivotal role at Qualys, Jonathan extends his expertise to support YHC in all matters related to IT and security. His invaluable contributions have propelled the organization into the digital era, successfully implementing digital record keeping systems. Jonathan's dedication to YHC goes beyond his technical expertise, as he actively participates in outreach events, providing essential behind-the-scenes support. Whether it's procuring supplies or ensuring patients without transportation can access their prescribed medications, Jonathan's commitment to YHC's mission is unwavering.

Kellie Thompson, RN 

Kellie Thompson is an RN who volunteers on her days off from the hospital doing medical street outreach in Commerce City and Thornton.  She first got involved working with individuals experiencing homelessness working at the Colorado Coalition for the Homeless helping people apply for Medicaid after the approval of the Affordable Care Act, and after a few years attended CU School of Nursing Accelerated program to earn her BSN in 2017.  Since then she has worked at Stout Street Health Center (an integrated primary care/mental health/dental/eye clinic with a pharmacy and case management) as well at Tepeyac Community Health Center (non-profit primary care office serving primarily uninsured Spanish-speaking patients) before moving to Denver Health and now works night shifts as the charge nurse in the Clinical Decision Unit.  She was able to travel to London in 2023 to present with Kiera, RN, at the International Street Medicine Symposium on why nurses should be involved in leading street outreach activities.