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VA Northern California Health Care System


Leadership Team

Portrait of David Stockwell

David Stockwell | 916-843-9058


Mr. David Stockwell was appointed Director, VA Northern California Health Care System in October 2013. His leadership responsibilities at Northern California include directing 11 sites of care over 44,000 square miles and 17 counties, and caring for approximately 100,000 Veterans per year.

The VA Northern California Health Care System has grown in total patient volume during each of his five years of oversight and is now the 12th largest VA Healthcare system in the country.

Before coming to Northern California, Mr. Stockwell served as Deputy Medical Center Director of the Portland VAMC, Associate Director of the Alaska VA Health System and Regional Office, and Acting Medical Center Director of the Boise VAMC. Accomplishments during his career include leading the opening of 8 outpatient clinics for the Portland Health Care System, and directing the San Francisco and Northern California Health Care Systems Joint Planning Office. This included the planning and building of the Sacramento VA Medical Center. He has experience in Capital Asset Management, Logistics, and currently oversees one of the largest joint venture programs in the country with the Department of Defense at Travis Air Force Base.

During his career, Mr. Stockwell has served the VA in Portland, Anchorage, Little Rock, Tuscaloosa, Boise, Martinez, Sacramento, as well a two-month stint as acting Director of the Hawaii VA. Mr. Stockwell holds a Master’s Degree in Healthcare Administration from Baylor University.

Portrait of Timothy Graham

Timothy Graham | 925-372-2015

Associate Director | East Bay Division

Mr. Timothy Graham was appointed Associate Director, East Bay Division, in November 2016. Mr. Graham previously served as the Acting Associate Director at the VA Central California Health Care System from November 2015 until May 2016. Mr. Graham comes to VA Northern California from VA’s Central Office in Washington, D.C. where he served as Director of the Veterans Health Administration Freedom of Information Act Office since 2008. Previously, Mr. Graham served as a Privacy Specialist in the VHA Privacy Office and as the Assistant Compliance Officer and Privacy Officer at the Philadelphia VA Medical Center. Mr. Graham began his VA career in 2003 as a Presidential Management Fellow where he served as a Special Assistant to the Director of the Philadelphia VA Medical Center in Philadelphia, Pennsylvania until his graduation from the program in 2005.

Mr. Graham holds a Juris Doctor degree from the University of Tulsa, in addition to a Master of Laws in Health Law from Widener University and a Bachelor of Arts in English from Eastern Kentucky University. Mr. Graham is a 2010 graduate of Leadership VA and a 2012 graduate of the VA Health Care Leadership Institute.

Portrait of William T. Cahill, MD

William T. Cahill, MD | 916-843-9045

Chief of Staff

Dr. William Cahill is a neurologist with over twenty five years of clinical experience in various settings, including Air Force, VA, university, and community hospitals. Dr. Cahill brings a unique blend of leadership, management and people skills.

Dr. Cahill received a B.S. in Biology (Cum laude) from Georgetown University, Washington, D.C., in 1975, and his M.D., also from Georgetown, in 1979. He completed an Internal Medicine Internship at Thomas Jefferson University Hospital in Philadelphia in 1980 and his residency in Neurology at Georgetown University Medical Center in 1983. Dr. Cahill went on to complete a Fellowship in Clinical Neurophysiology at Duke University Medical Center in 1986. He is Board Certified by the American Board of Psychiatry and Neurology, and the American Board of Clinical Neurophysiology.

Dr. Cahill practiced as a Staff Neurologist at Keesler USAF Medical Center, Keesler AFB, Mississippi, from 1983-1985. He then went on to private practice in Neurology from 1988-1991. He served as Assistant Professor in the Department of Neurology at the University of Cincinnati Medical Center from 1991-2003. He joined the Cincinnati VA Medical Center as a Neurologist in 1991 and became Chief of Neurology there in 1993. He became Chief of Staff at the VA Central California Health Care System in December 2003, where he also served as Assistant Dean and Health Sciences Associate Clinical Professor of Neurology at the University of California San Francisco – Fresno.

In 2008, Dr. Cahill joined VA Northern California Health Care System as the Chief of Staff. Dr. Cahill adds depth and experience to the VA Health Care System, particularly in the management of patients with epilepsy. With his background in operations management, he brings experience in improving access to care for veterans in the outpatient clinics and for those needing inpatient services.

Portrait of Kathryn K Bucher

Kathryn K Bucher | 916-366-5338

Associate Director, Patient Care Services/Nurse Executive

Ms. Kathryn K. Bucher, RN, MSN, NE-BC was appointed to serve as Associate Director/Patient Care Services of the VA Northern California Health Care System (VA NCHCS) in October, 2014. She comes to VA Northern California from the New Mexico VA Healthcare System centered in Albuquerque, New Mexico where she served as the Associate Director, Patient Care Services/Nurse Executive. Ms. Bucher has many years of clinical and management experience in healthcare settings in both the VA and private sector, including two tours as the Chief Quality Officer for VISN 22 (Southern California and Nevada) and Clinical Director of Education, Training, and Development at the Southern Arizona VA Healthcare System. She will complete her Doctorate in Nursing Practice from University of New Mexico in the Spring of 2015. Ms. Bucher has a Master’s of Science in Nursing Administration from San Diego State University, and a Bachelor’s of Science in Nursing from University of California San Francisco. Ms. Bucher began her VHA career at the VA San Diego in 1986, as the Nurse Recruiter, taking on additional roles of Associate Chief Nursing for Acute Care, Executive Assistant to the Director for Total Quality Improvement and Chief of Quality Management/ Performance Improvement. Ms. Bucher stepped away from the VA for three years to teach in the BSN nursing program at Humboldt State University and returned to the VA mission, caring for Vets like her own dad. She has been engaged in many national and Network committees and projects, including most recently the National Center of Organizational Development design of a ‘constructive conflict’ educational venue, support for the Office of Nursing Service Evidence-based Practice Initiative, and acquisition of a VA Nursing Academy Program in Albuquerque. She has a reputation for excellence in group facilitation, strategic planning, and innovation in care delivery, a deep love for everything Lean, and a passion for creating a learning culture.

Portrait of John Hinson

John Hinson | 916-366-5337

Associate Director | Sacramento Valley Division

John Hinson was appointed VANCHS Associate Director, Sacramento Valley Division, in September 2018. Previously, Mr. Hinson served as the Acting Associate Director for Sacramento Valley Division and Chief of Logistics for VANCHCS from 2006 to 2018. |Mr. Hinson has served with VA offices at several sites across the nation for more than 25 years, including management positions with the Veterans Health Administration’s Prosthetics and Clinical Logistics Office and VA Office of Acquisition and Material Management in Washington, D.C. Mr. Hinson holds a bachelor’s degree in business administration from the University of Phoenix, is a graduate of the USDA Graduate School’s Executive Leadership Program, and has served as a federally certified interagency mediator. Mr. Hinson is a Veteran of the U.S. Marine Corps.