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integrated healthcare

with a conscience.














 Mary Jo Gregory, FACHE, RN, President and Chief Executive Officer

Mary Jo is a nationally regarded healthcare leader who brings a wealth of experience and expertise to our behavioral and physical health lines of business and to her responsibilities as President and Chief Executive Officer for NARBHA. During her 17-year tenure with Tenet Healthcare Corporation, Mary Jo served as CEO of hospital systems from Florida to California, including St. Luke’s and other hospital systems in Arizona. In those systems, she offered perspectives of rural and urban healthcare delivery,as well as medical administrator and hospital care provider.
More recently, Mary Jo served as Executive Vice President and Chief Operating Officer for hospital systems in several states owned by Sisters of Charity Healthcare. Her expertise and skills strengthen and complement important leadership resources among our executive team. Mary Jo’s knowledge and hands-on experience with operational programs and her strategic guidance facilitate and strengthen our statewide network’s integration of physical and behavioral health services to deliver the highest quality, member-centered care with fiscal stewardship. Mary Jo is a fellow of the American College of Healthcare Executives (FACHE), a registered nurse who maintains her licensure in five states, and she has an MS in Business Administration and BS in Human Resources.


Mark Carroll photo 

Mark Carroll, MD. Chief Health Officer
The NARBHA Institute announced February 23, 2017, the appointment of MarkCarroll, MD as its Chief Health Officer.
Dr. Carroll will lead The NARBHA Institute's work in population health and the social determinants of health in Northern Arizona communities through strategic innovation and best practice collaboration. His efforts will promote synergies with existing programs and activities, such as the Community Needs Assessment commissioned by The NARBHA Institute and being led The Center for Health Equity Research at Northern Arizona University.

Dr. Carroll has served in many health care leadership positions, including roles as chief medical officer at Flagstaff Medical Center, vice-president and medical director for population health management at Northern Arizona Healthcare, director of the Indian Health Service (IHS)national telehealth program, and director of the IHS Native American CardiologyProgram.

Prior to joining The NARBHA Institute, Dr. Carroll was the physician program consultant for the Arizona Health Care Cost Containment System (AHCCCS), where he collaborated on statewide healthcare delivery system and improvement initiatives. 
Dr.Carroll received his M.D. from Dartmouth Medical School. He completed surgical internship training at the Presbyterian-University of Pennsylvania Medical Center, pediatric residency training at the Children's Hospital of Philadelphia, and post-doctoral fellowship training in the Robert Wood Johnson Clinical Scholars Program at the Stanford University School of Medicine.
Dr. Carroll and his family have lived in northern Arizona since 1992. He is an active community volunteer and was Chairman of the Board of Directors for the United Way of Northern Arizona in 2016.

Nathan Jones










Nathan Jones, General Counsel

Nathan began his career in 2006 representing Arizonans of low income in civil litigation. He joined Northern Arizona Regional Behavioral Health Authority in 2012 as Grievance & Appeals Administrator, and then became the Chief Compliance Officer overseeing the corporate compliance program for NARBHA.
Currently, Nathan is General Counsel for The NARBHA Institute. He provides legal advice to the Institute on a wide variety of matters including joint ventures, real estate, land use, commercial and residential leasing, employee benefits, corporate governance, tax, contract negotiation and administrative law.
The Arizona Community Action Association recognized Nathan with the 2012 Margie Frost Champions Against Poverty Award for his work. Nathan has served as a court-appointed child best interest attorney, housing authority hearing officer, and on the Arizona Supreme Court's Committee on Limited Jurisdiction Court Rules.

Nathan is certified in Healthcare Compliance (CHC) by the Compliance Certification Board and as a regulatory inspector by the Council on Licensure, Enforcement and Regulation (CLEAR). He holds a Bachelor of Arts degree from the University of Massachusetts at Amherst and a Juris Doctor degree, cum laude, from the Boston University School of Law.