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Stephen Williams – Chair

Stephen Williams has been Director of the City of Houston Health and Human Services Department since May 2004. His work experience includes positions in behavioral health, health care, public health and general government. Prior to his current position, he served as Executive Manager of Travis County Health, Human Services and Veterans Services and Deputy Director of Austin/Travis County Health and Human Services.

Beth Robertson – Vice Chair

Beth Robertson is President of two real estate development firms. Her Houston firm is a member of the Greater Houston Partnership and she also serves as an Advisory Director for Amegy Bank of Texas. She is a Past Chair of the Board of Regents of the University of Houston System and currently serves as a Trustee of the Cullen Foundation and Chair of its Health Care Trust.

Christopher Born - Secretary/Treasurer

Mr. Christopher Born, a longtime executive with the Texas Children’s Hospital Integrated Delivery System, currently serves as the President of Texas Children’s Health Plan, as well as Texas Children’s Women’s Specialists.  The Health Plan currently serves nearly 300,000 Medicaid and Children’s Health Insurance Plan (CHIP) enrollees in the Greater Houston area.  Prior to this role, Chris served as President of Texas Children’s Pediatric Associates and numerous executive positions with Texas Children’s Hospital.  A Certified Public Accountant (CPA) by background, Mr. Born holds an MBA from Rice University.

Katy Caldwell

Katy Caldwell is a native Houstonian and has extensive experience in a variety of community and civic organizations. She is currently chair of the AIDS Action Council and Executive Director of Legacy Community Health Services, Inc., a non-profit clinic in two locations in Houston. Her background includes having served as the elected Treasurer of Harris County and as a partner in a government relations and political consulting firm.

Cathy Easter

Cathy Easter is President and CEO of Methodist International, the global subsidiary of The Methodist Hospital System. Easter joined Methodist in 1991 and has had responsibility for various hospital operations and corporate functions during her 16-year tenure. She played a fundamental role in establishing the Community Benefits Program in 1993, and has coordinated Methodist’s charity care and community benefits programs ever since.

Lewis Foxhall, M.D.

Dr. Lewis Foxhall is a family medicine physician who has held a variety of positions with the Harris County Medical Society and the Texas Medical Association. His current position is Vice President of Health Policy at The University of Texas M.D. Anderson Cancer Center. Other organizations which have benefited from Dr. Foxhall’s expertise include the American Cancer Society, the Texas Department of State Health Services and the Texas Cancer Council. He has served for the past 14 months as Chair of the Harris County Public Health Care System Council.

George Masi

George V. Masi is President and Chief Executive Officer of Houston’s Harris Health System.  He has held this position since July, 2014.  Prior to being named CEO, Mr. Masi served as the system’s Chief Operating Officer from 2005 to 2014. Before that, he served as Administrator for Ben Taub General Hospital, the system’s 600 bed flagship teaching hospital. Prior to joining the Harris County Hospital District in 2001, Mr. Masi served for 27 years as a career officer with the Army Medical Department, rising to the rank of Colonel. From 1998 to 2001, Mr. Masi served as the Army Surgeon General’s Consultant for Health Care Administration. Mr. Masi, who holds graduate degrees from the University of Buffalo, Long Island University and the National Defense University, is also a Certified Healthcare Executive and a Fellow in the American College of Healthcare Executives.

Steven B. Schnee, Ph.D.

Dr. Steven Schnee became Executive Director of MHMRA of Harris County, one of the largest community mental health and mental retardation service systems in the nation in 1992. Before coming to MHMRA, he was the Superintendent of the San Antonio State Hospital for five years and Executive Director of Central Counties Center for MHMR Services for thirteen years. Dr. Schnee has served on numerous TDMHMR committees.

Umair A. Shah, M.D., M.P.H.

Umair A. Shah, M.D., M.P.H, was appointed in May 2013, as Harris County Public Health & Environmental Services (HCPHES) Executive Director and the Local Health Authority for Harris County, Texas – third most populous county in the United States. Prior to joining HCPHES, he was an emergency department physician at Houston’s Michael E. DeBakey VA Medical Center and Chief Medical Officer at the Galveston County Health District. He earned his B.A. from Vanderbilt University; M.D. from University of Toledo Health Science Center; before completing an Internal Medicine residency, Primary Care/General Medicine fellowship, and M.P.H. at The University of Texas Health Science Center. His focus areas include population health, wellness and prevention; healthcare management; global/refugee health; health equity; community engagement; and emergency response. Dr. Shah currently serves as a member of the National Association of County and City Health Officials (NACCHO) Board of Directors and also provides leadership in numerous national initiatives, remaining engaged in clinical patient care, academic teaching, and is actively involved in the local community.

Margaret Shannon

Margaret B. Shannon is a retired officer of BJ Services Company, a Fortune 500 international oil field services company operating worldwide. She served as their Vice President and General Counsel for 16 years until their acquisition by Baker Hughes Inc. Margaret served for six years on the Board of St. Luke’s Episcopal Health Charities. She is actively involved in community activities, primarily in the health field. She also serves on the Board of Matador Resources Company, an oil and gas company listed on the NYSE.

Trey Wilson

Newton W. "Trey" Wilson III is a community leader and consultant for the energy industry. Most recently Trey served as Executive Vice President for Key Energy Services where he had responsibility for all international operations for Key. Key conducts business in Canada, Mexico, Colombia, Ecuador, Bahrain, Oman and Russia. Trey also oversaw technology development and implementation as well as strategy development for the company. He received his Juris Doctor from the University of Texas – Austin and a B.B.A. in finance from Southern Methodist University. He is married with three children and three grandchildren. He also serves on the board of The Guild Shop, a non-profit resale shop which supports seniors in need. Trey also serves on the endowment fund board for his church and has previously served on the board of the Good Neighbor Healthcare Center.


Lisa Mayes, Executive Director

Ms. Lisa Mayes joined the Harris County Healthcare Alliance as the Executive Director in April 2013.  Prior to her role at the Alliance, Lisa served as Director of Government and External Affairs for the Texas Medical Center.  Her background includes more than 25 years of experience in state government and politics, having worked in the Texas House of Representatives and Texas Senate, various state agencies and trade associations, as well as lobbying for a law firm and in-house for a corporation.  Lisa received her BA in Journalism/Radio-TV from Baylor University.

Sylvia Castillo, Executive Assistant

Sylvia Castillo has been the Executive Assistant to the Harris County Healthcare Alliance since January 2010 with the additional responsibility of providing support to TexHealth Harris County 3-Share Plan, Partners for Community Health (P4CH), and Greater Houston Health Information Exchange (GHHIE).  Prior to joining the Alliance, Ms. Castillo was employed with a private alternative education company for 11 years and brings extensive experience to this crucial position.  She brings a wealth of administrative skills and knowledge to all facets of the organization and has thrived in the Alliance workplace as she is unyielding to any responsibilities and challenges to which she is confronted.  During her tenure with the Alliance, she has proven to be an invaluable asset to this multi-faceted role and is loyal and dedicated to furthering the mission and vision of the Alliance.  Ms. Castillo continues to further establish herself with the Alliance and provides valuable contributions to the Alliance team as well as all other entities formed by HCHA.

Diane Arms-Signore, CCFC Program Manager

Diane Arms-Signore joined The Alliance as the Community Clinics Funders' Collaborative (CCFC) Program Manager in July 2014. Prior to coming to The Alliance, she worked as an independent consultant preparing mental health agencies for Joint Commission accreditation in El Paso, Texas. In addition to her experience with privately funded organizations, Mrs. Arms-Signore served as Operations Administrator for a not-for-profit children’s behavioral health clinic under the El Paso Local Mental Health Authority, Emergence Health Network. She received her Master’s from the University of Texas at El Paso in 2009. She has received several grants to support her research, which consists of evaluating Health Related Quality of Life in the Colonias, Advancing Latinos Professional Development, using a web-based program to assist with smoking cessation and Efficient Colorectal Cancer Screening Aids. She is delighted to become part of The Alliance and collaborate with its members.

Stephen Collazo, Project Manager

Stephen Collazo, MSSW, LCSW is the Project Manager for the Harris County Healthcare Alliance, overseeing a variety of collaborative projects throughout Harris County involving the Alliance as a whole. A graduate of Texas A&M University with Bachelors of Science in Psychology, Stephen also received a Masters of Science in Social Work specializing in community and administrative leadership from the University of Texas. His previous experience includes clinical and administrative social work roles at MD Anderson Cancer Center. Stephen is also a former national board member of the Society for Social Work Leadership in Health Care and the current president-elect for the Texas Chapter.

Tim Schauer, Policy Advisor

Tim Schauer is on staff with Cornerstone Government Affairs and contracts with the Harris County Healthcare Alliance as Policy Advisor.  Tim is a co-lead of Cornerstone’s flagship Texas office in Houston. He has more than 20 years of government relations experience working in both Austin and Washington, DC. Tim has advocated for a broad range of policy issues including health care, health insurance, public health, tort reform, education, water financing and craft beer. Tim has played a pivotal role in guiding the advocacy efforts for Community Health Choice, Nexus Health System, Memorial Hermann Healthcare System, the Texas Association of Community Based Health Plans and Open the Taps. In addition to his direct advocacy efforts, Tim specializes in public policy development with community organizations, as exemplified by his formative work with Healthy Living Matters - a Houston collaborative focused on solving childhood obesity. Tim’s collaborative style and upbeat leadership skills were recognized when he was selected to chair the Greater Houston Partnership’s Federal Relations Committee for three consecutive years.