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Northern Arizona VA Health Care System


Leadership Team

Portrait of Barbara A. Oemcke, MBA

Barbara A. Oemcke, MBA | 928-445-4860, ext. 6552

Medical Center Director

Ms. Oemcke was appointed Medical Center Director at the Northern Arizona VA Health Care System effective March 5, 2017.

Ms. Oemcke’s 30 years of Healthcare leadership experience includes Foodservice Management, Clinical Nutrition, Revenue Cycle Management, Business Management and Healthcare Administration. She served as interim Business Manager for VISN 23, during which time she led the successful roll-out of Fee Basis Claims Software and initiated the successful consolidation of VISN 23 revenue functions to the Central Plains Consolidated Patient Account Center. Ms. Oemcke also held positions of Associate Director and Interim Medical Center Director at the Southern Oregon Rehabilitation Center and Clinics from 2013 through 2017.

Ms. Oemcke holds a Bachelor's Degree in Nutrition from North Dakota State University and a Master’s Degree in Business Administration from St. Cloud State University as well as a graduate of the 2012 VA Health Care Leadership Development Program (HCLDP). Ms. Oemcke is involved in numerous National VA committees and workgroups. She is an outdoor enthusiast, enjoying travel, bicycling, hiking and the many outdoor recreational opportunities in Northern Arizona.

Portrait of Malcolm Keith Piatt, MD, FACP, MHA

Malcolm Keith Piatt, MD, FACP, MHA | (928) 445-4860 ext 6009

Chief of Staff

Dr. Keith Piatt was appointed Chief of Staff at the Northern Arizona VA Health Care System effective March 23, 2014 and served as the Acting Medical Center Director from November 30, 2015 - March 4, 2017.

Dr. Piatt is a 1985 graduate of the University Of New Mexico School Of Medicine, where he was selected to the Alpha Omega Alpha medical honor society. He served his internship, residency, and chief residency at the Good Samaritan Medical Center/Carl T, Hayden VA Medical Center in Phoenix, Arizona, where he was named intern of the year and resident of the year. After completion of his residency, Dr. Piatt joined the staff at the Carl T. Hayden VA Medical Center. He was responsible for the establishment of the first multidisciplinary HIV clinic in 1990 and was awarded the Secretary's "Hands and Heart" honor in 1992. He was selected as the Associate Chief of Staff for Ambulatory Care Services in 1995 and oversaw the opening of seven community based outpatient clinics, four in the metro Phoenix area and rural clinics in Payson, Globe, and Show Low, Arizona.

Dr. Piatt completed work on a Master's degree in Health Care Administration in 2006 through Seton Hall University and was chosen to give the commencement address. He has been selected five times as one of the "Top Doctors in Phoenix" by Phoenix Magazine.

Portrait of Lisa Martin

Lisa Martin | 928-445-4860 ext 6553

Associate Director

Ms. Martin was appointed Associate Director at the Northern Arizona VA Health Care System effective March 18, 2018.

Ms. Martin is a 21-year Air Force Veteran with over 20 years of health care and leadership experience at the Federal, State and local levels. She recently completed a three year assignment as the Wyoming Health Care Center Director after serving as Chief of Health Administration with the Battle Creek VA Health Care System. Prior to working with the Department of Veteran Affairs, she worked for the Department of the Army as a Senior Management Analyst for Headquarters Army Europe.

Ms. Martin holds an undergraduate degree in Business Administration from the University of St. Thomas and a graduate degree in Public Administration from California State University Bakersfield.

Portrait of Kerri B. Wilhoite, DNP, MBA/HCM, RN, NEA

Kerri B. Wilhoite, DNP, MBA/HCM, RN, NEA | 928-445-4860 ext 6557

Associate Director for Patient Care Services/Nurse Executive

Ms. Kerri B. Wilhoite was appointed as Associate Director for Patient Care Services/Nurse Executive at the Northern Arizona VA Health Care System effective March 9, 2014.

Ms. Wilhoite has worked at the Durham VAHCS, Washington, DC, and Tennessee Valley Healthcare System during her 16 year VA career. She has been a staff nurse, psychiatric nursing manager, Local Recovery Coordinator, Mental Health Field Advisor, and most recently the Associate Chief Nurse at Durham, North Carolina. Ms. Wilhoite has current oversight of all daily operations of inpatient and outpatient mental health programs, Operating Room, Post Anesthesia Recovery unit, 23 hour observation unit, chemo clinic intravenous therapy team and two acute medical surgical units. Ms. Wilhoite was also responsible for recruitment and retention of nurses across the continuum.

She has led multiple teams, served as chair or member on key nursing and multidisciplinary committees, councils and improvement teams at the medical center, VISN and national levels. She has demonstrated the ability to recruit high quality staff in key leadership positions and mentor staff for upward mobility positions. She has experience with developing programs and demonstrated the ability to successfully deploy in a complex two-division medical center.

Ms. Wilhoite's educational preparation includes a bachelor of science in nursing, master’s degree in business administration and is currently completing a doctorate in nursing practice with an expected graduation date of May 2014. She holds American Nurse Credentialing Center certification as a Nurse Executive, Advanced level. She is a VHA certified Mediator. She is a graduate of VISN 9 Leadership Institute, VACO Federal Nurse Executive Institute, and VACO Health Care Leadership Development Program. Ms. Wilhoite holds an Adjunct Faculty appointment at three various universities.