Meet our Senior Leadership

Todd Caliva, Chief Executive Officer

Todd Caliva serves as Chief Executive Officer (CEO) of HCA Houston Healthcare Clear Lake and is regarded in the industry as a consummate healthcare professional. He has more than 24 years of experience, including a decade at the multi-facility level. He has been with HCA in Houston since 1997.

In prior roles, Caliva served as CEO of HCA Houston West and chief operating officer of The Woman's Hospital of Texas. His strategic vision, leadership, compassion and relationship-building skills allowed those facilities to flourish in its staff recruitment, patient and visitor experience and market presence.

Caliva believes commitment to quality healthcare begins with employees. If employees enjoy what they do and are committed to our values, then our patients will get the quality care and service they deserve.

His robust community involvement includes:

  • Chairing the SouthEast Texas Regional Advisory Council Cardiac Care Committee, an organization that is committed to improve the overall care for heart attack patients across the region.
  • Serving as the president/chairman of the Educational Foundation of the Southeast Texas Chapter of the American College of Healthcare Executives.
  • Currently serving as regent of the Southeast Texas Chapter.
  • Serving as chairman of the board for Bay Area Houston Economic Partnership.

Caliva earned a master's degree in business administration and a bachelor's of science in marketing from the University of Houston.

Elias Armendariz, Chief Operating Officer

Elias Armendariz is the Chief Operating Officer (COO) at HCA Houston Healthcare Clear Lake.

Before joining HCA Houston Clear Lake, Armendariz was a member of the senior leadership teams at Methodist Hospital Northeast and Methodist Children’s Hospital in San Antonio. He also previously served as chief nursing officer, COO and vice president of operations at El Paso Children’s Hospital, and director of cardiovascular and critical care services at University Medical Center of El Paso.

Armendariz received his bachelor’s degree in nursing from The University of Texas Health Science Center at San Antonio and a master’s of science in nursing systems management from The University of Texas at El Paso.

John O. Armour, Chief Financial Officer

As a 22-year veteran of HCA, John Armour currently serves as its chief financial officer (CFO) of HCA Houston Healthcare Clear Lake. Armour has held senior leadership positions for an excess of 18 years, all in the Gulf Coast Division. John has 15 years of CFO experience and was formerly CEO of Parallon Business Solutions Supply Chain Services/Gulf Coast Division.

Armour has been an active member of the Houston Golf Association since 2008 and on its board of directors for the past five years. A former chair of the audit committee and board treasurer, he currently serves as vice chairman.

Sherry Camacho, Chief Nursing Officer

Sherry Camacho is the Chief Nursing Officer (CNO) at HCA Houston Healthcare Clear Lake. Camacho was previously CNO at Valley Regional Medical Center, an HCA hospital in Brownsville. She has been an HCA employee for more than 20 years and is passionate about healthcare and nursing.

Camacho earned her bachelor’s degree in nursing and a master’s degree in healthcare administration from Western Governors University.

She has been married to her high school sweetheart for more than 25 years and is a strong believer in giving back to the community through volunteer work.