Chris Tall Bear serves as the Tribal Public Health Advisor for the National Network of Public Health Institutes. Through this position, he provides project support and subject matter expertise to the diverse and growing array of public health projects within NNPHI related to tribal health as provides subject matter expertise as part of the tribal data modernization efforts through NNPHI. He earned a Bachelor of Arts in Native American Studies from The University of Oklahoma and a Masters of Legal Studies from The University of Oklahoma – College of Law with a focus in Energy and Natural Resources. Currently working on completing his requirements for an MA in socio-cultural Anthropology, also from the University of Oklahoma. In the past, he volunteered with several community-lead non-profit organizations in Oklahoma. He currently serves on the Stephenson Cancer Center’s tribal advisory group and the community engagement committee. For the City of Norman, Oklahoma’s third-largest city, he served two terms on the Reapportionment Committee and has previously served on the Human Rights Commission. He was appointed by the Cheyenne & Arapaho Tribes of Oklahoma to serve as one of two Cheyenne representatives to both the National Park Service Sand Creek Massacre Historical site and NAGPRA (Native American Grave and Repatriation Act). In March of 2025, he was appointed by the Cheyenne & Arapaho Tribes to serve as a member on his tribal health board. Chris is a southern Cheyenne from the small rural tribal community of Deer Creek in western Oklahoma and was fortunate to be raised in a traditional setting. In his family lineage he is a descendant of survivors of the 1864 Sand Creek massacre and of Grey Beard, a Sutai Chief who was a Ft. Marion Prisoner of War. He credits the continued existence of tribal nations and their survival in today’s modern world to their traditional customs and practices. He encourages others to learn where they come from and to be proud of who they are. He has been married for 17 years to Donna Marie Tall Bear and they make their home in Norman, Oklahoma.

Mark Doescher, MD, MSPH is the Inasmuch Foundation Endowed Chair in Cancer Screening, Outreach, and Education and Professor of Family and Preventive Medicine in the College of Medicine at the University Oklahoma Health Sciences (OUHS). He serves as the Associate Director (AD) of Community Outreach and Engagement (COE) at the Stephenson Cancer Center (SCC) and Senior AD of the Community Engagement Core of Oklahoma Shared Clinical and Translational Research. Before moving to Oklahoma, he served as the Director and PI of the University of Washington – WWAMI Rural Health Research Center. Dr. Doescher’s longstanding commitment to improving health equity in rural and tribal communities has led to studies funded by the NIH, CDC, AHRQ, HRSA, private foundations and state government that have resulted in dozens of refereed publications, health policy reports, and policy changes at the state and federal levels. Dr. Doescher’s current research centers on collaborating with federally recognized Tribal Nations and their healthcare systems to increase receipt of evidence-based cancer screenings.  In addition to conducting research and overseeing the SCC COE program, Dr. Doescher is a clinically active family physician with three decades experience seeing patients in public-sector settings.  He attended medical school at the University of California – San Francisco. He completed residency training in family medicine at the University of Rochester, Highland Hospital program and residency training in general preventive medicine and public health at the University of Colorado – Denver.

Jeff Fife is a second-generation tribal leader with over 20 years of collective experience in the fields of Tribal Law Enforcement, Tribal Administration, Commerce, Interior Affairs and in the Muscogee Nation Legislature.

A lifelong advocate of tribal self-determination and self-governance, Fife began his service to the Nation as a Law Enforcement Officer with Muscogee Nation Lighthorse Police, eventually elevating to the position of Chief Criminal Investigator for 8 years.

He then served on the tribe’s National Council as an elected representative, where he was on the Tribal Affairs Legislative Committee.

For four years, he served on the Muscogee Nation Executive Cabinet as Secretary of Interior Affairs. During his tenure, Fife successfully Increased revenue collections from cell tower construction negotiations pursuant to FCC regulations and expanded Transit services from local to National and Charter services.

Currently, he serves as Chief of Staff for Principal Chief David Hill, a position he has held since March 2022. He is also currently serving as Acting Secretary of Commerce.

In addition, Mr. Fife is a self-employed businessman, owning and operating Fife Land Management and Cattle Co.