Executive Leadership Team

Dr. Stephen Stake

Stephen Stake DrPH, MHS, CPH, Chief Executive Officer

Dr. Stake is a specialist in health system administration, program development, monitoring and evaluation, analysis, teaching, and cross-cultural communication.  He has over ten years of public health leadership focusing on social and behavioral interventions for indigenous populations including Apache, Mixtec, and Sylhetti.

As a Johnson & Johnson Community Health Care Scholar for his work in developing sustainability in poor areas, he comes to K’ima:w Medical Center from Johns Hopkins School of Public Health where he was an Associate Faculty member.

Jessica Mosier

Jessica Mosier, Chief Operating Officer/Chief Administrative and Quality Officer

Ms. Mosier has been with K’ima:w Medical Center for nearly twenty years. She has been the Executive Secretary since 2005 providing continuity to the medical center administration and orienting each new Governing Board member to organization policies. In addition, she acts as a continuous quality improvement monitor, as our Administrative and Quality Office and a liaison for Joint Commission accreditation standards.

In May 2023, Ms. Mosier was appointed as Chief Operating Officer. She will continue to serve the organization in both roles and we look forward to all she has to offer, bringing years worth of experience and knowledge to this key leadership role. 

Warren Tamerius

Warren Tamerius, Chief Human Resources Officer

Mr. Tamerius began working at K’ima:w Medical Center in August 2012 as the Human Resources Director with experience in construction project planning and management, public communications, disaster planning and administration, and tribal government experience.