Executive Staff

John M. Silva, Chief Executive Officer

Silva directs and manages all of the organizations operations – administration, finance, human resources, medical, dental, marketing, public relations and transportation services among other departments and functions.

Formerly, he was a senior consultant providing professional services to the National Association of Community Health Care Centers (NACHC), community health centers (CHC) and state primary care associations (PCAs) and served as chief executive officer for the following organizations: Hometown Health Centers (formerly Schenectady Family Health Services), Family Care Health Centers, Alliance for Community Health, JMS Associates and Managed Care Assistance Corporation.

In 1993, Silva was elected president of the National Association of Community Health Centers, the largest association of community, migrant and homeless health centers in the U.S. He also served on then First Lady Hillary Rodham Clinton’s Universal Health Care Development Group, representing the nation’s 1000+ community health centers.

Silva is a graduate of the College of the Holy Cross and attended Columbia University and St. Louis University.


Maiuri Ranchhod, Chief Operating Officer

Ranchhod supervises and manages the day-to-day operations and internal functions of the organization.

She most recently worked at Hillcrest Hospital, Saint Francis Hospital, Emory University, Emory University Medical School, Atlanta Union Mission, Egleston Children’s Hospital, Newton General Hospital and Oxford College of Emory University.

She is a graduate of the Medical University of Lublin (Poland) and an undergraduate of Emory University and the Oxford College of Emory University.


Christopher Puls, M.D., Chief Medical Officer

Dr. Puls is the chief medical officer and director of the Behavioral Health Services department. Dr. Puls specializes in behavioral and mental health services.

He is board certified in general psychiatry, and in child and adolescent psychiatry. He is a fellow of the Child Psychiatry department at the University of Colorado.

He is a member of the American Psychiatric Association and the Oklahoma Psychiatric Association.

He is a graduate of the St. Louis School of Medicine and an undergraduate of Indiana University. Dr. Puls completed his residency at Washington University (St. Louis, Mo.).


Larry Tease, Chief Financial Officer

Tease oversees the organization’s accounting practices, including accounting departments, preparing budgets, financial reports, tax and audit functions in addition to developing and implementing the financial strategy, planning and forecasts.

Previously, he served as technical and financial analysts at Williams Communication and a capital budget analyst and accounts payable clerk with the Public Service Company of Oklahoma.

Tease is a graduate of Langston University and Tulsa Technology Center.


Laura Dempsey-Polan, Ph.D., Chief of Community and Systems Development

Dr. Dempsey-Polan is chief of community and systems development. She is responsible for organization partnerships, systems expansion, and government relations.

She has worked as a health administrator, analyst/planner, researcher and advocate in the fields of disability, aging, behavioral health, and Medicaid for more than 35 years.

Formerly, Dr. Dempsey-Polan served as an executive administrator for LIFE Senior Services; as the Community Service Council’s founding director of the Alliance and state Consortium on Disabilities; and as a psychiatric administrator.

She is a member of the National Association of Community Healthy Centers. She holds appointments on the OKHCA Living Choice and ACO initiatives, the Tri-County Council on Aging, and the Community Service Council’s Public Policy Committee. She has been recognized with the Pinnacle and Woman of the Year awards among other awards.

Following two master’s degrees, Dr. Dempsey-Polan received her Ph.D. in health and human services administration/public policy from Cornell University. She has authored numerous area and state articles and reports.


Stan Fosburg, Chief Information Technology Officer

Fosburg defines, updates and implements the information technology strategy and operations at Morton.

He served as a professional services engineer at Nortel Networks and a customer support engineer with Memorex Telex before assuming his current position.

He is certified as a CVX technician and as a Cisco Certified Network Associate (CCNA) among other certifications in information technology.

Fosburg is a former member of the U. S. Navy.


Cassie Clayton, Chief Nursing Officer

Clayton will provide leadership and direction of the nursing staff, assuring continuity, consistency of nursing care, implementation of clinical and organizational quality initiatives and an increased focus on community outreach and education initiatives.

Previously, she served as director of nursing. Before joining Morton, Clayton was nursing supervisor with the University of Oklahoma School of Community Medicine.

Clayton is board certified as a registered nurse. She is also Advanced Cardiac Life Support (ACLS) and Basic Life Support (BLS) certified.

She has been a presenting speaker at the Residency Program Services Conference and the Black Executive Exchange Program with the Metropolitan Tulsa Urban League Young Professionals.

Clayton is a graduate of Oklahoma Wesleyan University, Tulsa Community College and Tulsa Area Vocational School.