Central Health

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Board of Managers

To contact the Board of Managers, call Board Governance Manager Briana Yanes at 512-978-8049 or submit the form below.

Board of Managers Contact Form

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Sherri R. Greenberg, M.S. – Chairperson

Sherri R. Greenberg is a Clinical Professor and Fellow of the Max Sherman Chair in State and Local Government at the LBJ School of Public Affairs. In addition to her role as a member of the Central Health Board of Managers, she is a Senior Advisor to Austin Mayor Steve Adler and a member of the City’s Housing Bond Review Committee.

Greenberg served for 10 years as a member of the Texas House of Representatives, completing her final term in January 2001. In 1999, the Speaker of the House appointed her to chair the House Pensions and Investments Committee and to chair the Select Committee on Teacher Health Insurance. She served two terms on the House Appropriations Committee, and served on the Appropriations Committee’s Education, and Major Information Systems Subcommittees. Other committee assignments included the House Economic Development Committee, Elections Committee, and Science and Technology Committee.

As a public finance professional, Greenberg served as the Manager of Capital Finance for the City of Austin from 1985 to 1989, overseeing the City’s debt management, capital budgeting, and capital improvement programs. Prior to that she was a Public Finance Officer at Standard & Poor’s Corporation in New York, where she analyzed and assigned bond ratings to public projects across the country.

Professor Greenberg received an M.Sc. in Public Administration and Public Policy from the London School of Economics and a B.A. in Government from the University of Texas at Austin. Currently, she serves on the national board for the American Society for Public Administration and is a board member for the Section on Women in Public Administration, as well as a CenTex Chapter board member. Also, Greenberg is a board member of the Jewish Community Relations Council of Austin and an appointed member of the City of Austin General Obligation Housing Bond Review Committee.

Sherri Greenberg was appointed to the Board of Managers by Travis County Commissioners Court.

Charles Bell

Charles E. Bell, M.D., M.S. – Vice-Chairperson

Charles E. Bell, M.D, M.S. is currently semi-retired and works part-time with Texas A&M Health Science Center as a medical advisor of the KSTAR physician assessment program and as a part-time medical director for LeFleur Transportation.

Most recently, he served as the President of the Diabetes Health and Wellness Institute in Dallas, Texas from January 2013 to March 2016. He also served as Deputy Executive Commissioner at Texas Health and Human Services Commission from March 2003 to August 2011. During his career in state service he has served as the Interim Commissioner of the Department of State Health Services in 2006 and as the Interim Commissioner of the Texas Department of Health in 2001.

He has also held the following positions: Executive Deputy Commissioner of the Texas Department of Health (TDH), Regional Medical Director of TDH Public Health Region 1 in Lubbock, Texas, Chief of the Bureau of HIV and Sexually Transmitted Disease Prevention, and Medical Director of the Sexually Transmitted Disease Clinic at the San Antonio Metropolitan Health District.

Dr. Bell received his undergraduate degree from the University of Dallas in Irving, Texas, his medical degree from UT Southwestern Medical School in Dallas, completed a one-year residency in Internal Medicine at St. Francis Hospital in Hartford, Connecticut and received his masters degree in healthcare administration from Trinity University in San Antonio, Texas. Dr. Bell is a native Texan born in Port Arthur, Texas.

Julie Oliver, J.D. – Treasurer

With nearly 20 years of financial management and leadership experience, Julie Oliver formerly served as the financial division controller for St. David’s HealthCare’s seven-hospital healthcare system, across 110 locations in Central Texas, for 14 years.

Prior to assuming her role as a controller, Ms. Oliver served as the director of audit and compliance for five years, where she successfully led annual financial audits for the St. David’s HealthCare system. She was the lead on all matters pertaining to the history and legal agreements for St. David’s HealthCare’s partnership with St. David’s Foundation and Georgetown Health Foundation.

Before joining St. David’s HealthCare, Ms. Oliver worked as a partner at Patterson & Davies LLP in Austin where she provided planning, transactional advice and controversy assistance in federal, state and local taxation business start-ups as well as government relations. She began her career as a tax consultant at Ernst & Young in Austin where St. David’s Foundation was her client.

Ms. Oliver earned a Bachelor of Business Administration degree in accounting from The University of Texas at Arlington. She went on to complete her law degree at The University of Texas at Austin and is licensed by the State Bar of Texas. Outside of her professional role, she loves spending time with her family and pets; she also teaches yoga at Wanderlust Yoga in downtown.

The Austin City Council appointed Ms. Oliver to a four-year term on the Central Health Board of Managers in June, 2017.

Cynthia Valadez, Sr

Cynthia Valadez, Sr. – Secretary

Cynthia Valadez is currently a consultant and health care advocate for Travis and Williamson Counties, and has been since 1995. She has provided health care services for clients in both counties, while also working to provide health care training and systems navigation education to community organizations and neighborhood groups.

Cynthia has also been a community health care worker since 2010. She previously worked with Latino Healthcare Forum, an Austin-based nonprofit organization concerned with reducing racial and ethnic health disparities.

Prior to this, Ms. Valadez was an Austin Fair Housing Project Coordinator at Urban Center and was responsible for the recruitment, hiring, education, and assignments for a study that proved existing discriminatory practices in Travis County, and was ultimately used as the foundation for changes to the Fair Housing Act.

Early in her professional career, Ms. Valadez was a community coordinator for the Southwest Voter Registration and Education Project in 1982, as well as a paralegal with the U.S. Department of Education, Office of the Inspector General, from 1977 to 1978.

Cynthia Valadez was appointed to the Board of Managers by Travis County Commissioners Court to a four-year term in February, 2015.


Shannon Jones

Shannon Jones, M.P.A.

Shannon Jones, III served as the Director of Austin Public Health with the City of Austin for two years before his retirement in April, 2017. Under his oversight, the department achieved accreditation by the Public Health Accreditation Board (PHAB), and was one of the first five accredited public health agencies in the State of Texas. He was previously Deputy Director of Austin/Travis County Health and Human Services Department from August 2011 to April 2015, and had served on the department’s staff since July 1999.

The Central Texas African American Family Support Conference awarded Mr. Jones the 2015 Garnet F. Coleman “Eternal Flame” award, which recognizes individuals who have demonstrated a strong commitment in their careers and everyday lives to raising awareness about mental health and health disparities.

The Obama Administration appointed Mr. Jones to serve as chairperson of the national Advisory Council for the Elimination of Tuberculosis (ACET) with the Centers for Disease Control and Prevention (CDC) from January 2011 until January 2014. He also served as member of the CDC’s National Study of Determinants of Early Diagnosis, Prevention and Treatment of Tuberculosis (TB) in the African-American Community.

Mr. Jones served as the Chair of the Austin/Travis County Community Health Assessment and Improvement Planning (CHA/CHIP). In this role, he coordinated and organized the collaboration of the major local health care and public health agencies along with many of the social services, transportation and various other public/private agencies in the region. The CHA/CHIP will serve as the first major comprehensive planning effort to address the key identified social determinants of health that impact the Austin/Travis community.

Mr. Jones might be best known in the community as founder of the local radio talk show “Health Talk” on KAZI FM 88.7, which for more than 11 years has focused on improving the health of residents of Austin and Travis County.

Mr. Jones holds a Bachelor of Arts degree from Oglethorpe University in Atlanta, Georgia, a Master of Public Administration from the University of Pittsburgh, and has completed course work towards the PhD in Management and Policy from The University of Texas School of Public Health in Houston. In addition he is a Woodrow Wilson Administrative Fellow and an Associate in the American College of Healthcare Executives.

The Travis County Commissioners Court appointed Mr. Jones to a four-year term on the Central Health Board of Managers in January 2018.

Maram Museitif, M.P.H., C.P.H.

Maram Museitif is a public health and health care professional with more than 10 years of experience working in large research, academic, and government health settings, and has a solid understanding of the challenges facing health care delivery in the United States and globally.

Ms. Museitif holds a master’s degree in public health and is certified in public health and clinical research. She is the chair of the Legislative, Policy and Advocacy Committee for the Texas Public Health Association where she prioritizes and advocates for statewide policies, programming, and funding to address public health issues.

Ms. Museitif also served on Central Health’s Health Equity Council, whose efforts led to the amendment of the Smoking in Public Places Ordinance (SIPPO) to include e-cigarettes. In addition, she was a member of Central Health’s inaugural Community Health Champions class in 2016 where she was presented an appreciation award and was nominated alumni president by her classmates. The Texas Public Health Association recognized her advocacy work for health equity in 2016 with the presentation of the Jessie A. Yoas Memorial Advocacy Award.

Prior to her role at the Texas Public Health Association she worked for Yale University, UT Southwestern, Department of State Health Services, The United Nations Relief and Works Agency, and the US Department of Veterans Affairs in Dallas. In addition to her professional career, she sits on several health committees working to empower patients, students, and providers. She is also a recent graduate of Leadership Austin and a founding member of The Society of Health Communication.

In her free time, Ms. Museitif enjoys cooking, reading, and chatting with her #Pinksocks tribe.

Guadalupe Zamora, Vice-Chairperson

Guadalupe Zamora, M.D.

Dr. Guadalupe Zamora, M.D. was appointed to the Board of Managers in January 2013 by the Travis County Commissioners Court.
Dr. Zamora has 24 years of experience as a practicing physician, and when not on staff at St. David’s Medical Center, he works out of his own family medicine clinic in East Austin alongside his niece Dr. Belda Zamora.

He has served as President, Secretary, and Treasurer of the Travis County Medical Society and served on the advisory board for the Medical Access Program (MAP) prior to the existence of Central Health. Most recently he served as treasurer of Healthy ATX, a local organization that supports the improvement of the local healthcare system.

Dr. Zamora was appointed to a second four-year term in January, 2017.

Julie Zuniga, PhD, RN, FAAN

Julie Zuniga is an Assistant Professor at the University of Texas at Austin. Dr. Zuniga received her BA from Austin College in Sherman, Texas, her MSN and PhD from The University of Texas at Austin School of Nursing, during which times she worked in infectious disease/internal medicine unit at the county hospital. She completed her Post-Doctoral Fellowship from Emory, in Atlanta Georgia. In 2019, she was inducted as a Fellow of the American Academy of Nursing. She was also awarded the Early Science Investigator Award, by Southern Nursing Research Society in 2018 and the Young Researcher Award, American Public Health Association – Public Health Nursing Section.

Dr. Zuniga’s area of research is self-management of people with multiple morbidities with an emphasis on people living with the dual diagnoses of HIV and diabetes. She is currently funded by the National Institute of Health, National Institute of Nursing Research. Dr. Zuniga’s work has widely disseminated with over 33 published manuscripts in peer-reviewed nursing and multidisciplinary journals.

Dr. Zuniga was appointed to the Board of Managers by the City of Austin in May, 2019.