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Our Leadership

Cris Rivera - CEOCris Rivera - CEO

Cris Rivera comes to RGRH from HCA affiliated Allen County Hospital (ACH) in Iola, Kansas. Cris, a Valley native, has held various HCA healthcare leadership roles over the last 30 years. She served as CEO at Savoy Medical Center, a 180-bed hospital in Mamou, Louisiana.

During her tenure at Savoy, Cris completed several renovation projects and opened a health clinic to include pediatric and obstetrical services. She also successfully recruited primary and specialty care physicians to the community.

Prior to working in Louisiana, Cris served as COO and Chief Ethics and Compliance Officer at Overland Park Regional Medical Center (OPRMC), a 343-bed hospital in Overland Park, Kansas. In 1982 Cris held her first healthcare position as a lab supervisor at Rio Grande Regional Hospital. After completing the HCA Chief Operations Officer (COO) Development Program in 2004, Cris served as COO at HCA affiliated Valley Regional Medical Center (VRMC) in Brownsville, Texas.

Cris earned a Bachelor of Science from Incarnate Word College and a Master of Business Administration and Healthcare Management from Our Lady of the Lake, both in San Antonio, Texas.

She and her husband, David, have two adult children, Cynthia Deanne and David Christian, their daughter-in-law, Erica Lynn, and recently celebrated the addition of their first grandson, Leo.

Kathy Dassler - CNOKathy Dassler - CNO

Kathy Dassler joined the Rio Grande Regional Hospital team in 2002 after serving as Senior Vice President of Patient Care Services/Chief Nursing Executive at Wuesthoff Health Systems in Rockledge, Florida.

With over 30 years of nursing and management practice, Kathy has been very successful during her career in recruiting and retaining staff members. Among her achievements, she initiated a nursing scholarship program in conjunction with the medical staff and health system’s foundation and has implemented numerous customer service initiatives within the department of nursing.Kathy is a registered nurse and obtained both her Master of Science in Heath Service Administration and Bachelor of Professional Studies from Barry University in Miami, Florida.Kathy enjoys spending time with her two pets, BJ and Jessie, and likes reading, swimming and gardening.

Matt Wolthoff, COOMatt Wolthoff, COO

Matt Wolthoff joined Rio Grande Regional Hospital as Chief Operating Officer in March 2013. Since 2002, Matt has served in various healthcare management positions from being a Medical Service Corps Officer in the United States Air Force to Vice President of Operations at Valley Baptist Health System.

Matt is from San Antonio, Texas, and in 2010 he had an opportunity to join HCA as a Vice President of Operations at Methodist Hospital, Methodist Children’s Hospital, and Methodist Specialty and Transplant Hospital. Since joining the Rio Grande Regional Team, he has been instrumental in critical operations initiatives including the development of the largest da Vinci robotic surgery program in the Rio Grande Valley, construction and start-up of the Edinburg Free Standing Emergency Department, and the implementation of service excellence tactics. In 2014 Matt was named the Young Healthcare Executive of the Year for the South Texas Chapter of ACHE.

Matt’s experience and excellent performance throughout his career have been a tremendous benefit to Rio Grande Regional Hospital and the community of McAllen, TX. Matt is a Fellow in the American College of Healthcare Executives. He earned a Master of Business Administration with a Healthcare Concentration from the University of Texas – San Antonio and a Bachelor of Science in Management from the United States Air Force Academy. He is very engaged in the community serving on boards for the McAllen Economic Development Corporation and Chamber of Commerce. Matt is married to Lucy Ann from Harlingen, Texas and they have three children. Matt and his family enjoy the outdoors and spend their leisure time hunting or at South Padre Island fishing.

Charles Mallon, CFOCharles Mallon, CFO

Charles Mallon joined Rio Grande Regional Hospital as Chief Financial Officer in July 2010. Chuck comes to us from Presbyterian/St. Luke’s Medical Center and Rocky Mountain Hospital for Children in Denver, CO, where he had been serving as Controller since 2009.

Chuck began his career in healthcare in 1994 at the Arapahoe House Foundation in Thornton, CO, where he served as Chief Financial Officer for 12 years. In 2003, Chuck served as the Treasurer and Chief Financial Officer for the Board of Directors of Centennial Peaks Hospital and in 2006 he began his career with HCA as Controller at Rose Medical Center. Through the years, Chuck has been responsible for designing and implementing comprehensive budget systems which reversed years of operating losses and successfully exceeded budget during his tenure at different facilities.Chuck is a Certified Public Accountant, originally licensed in Michigan and currently licensed in Colorado. He earned a Masters of Science in Taxation from Walsh College in Troy, MI, and his Bachelor of Science in Business Administration from Central Michigan University in Mount Pleasant, MI.Chuck enjoys traveling with his wife of 33 years, Karen, running, playing and watching hockey as well as playing the guitar. Chuck and Karen have one son, Kendall.

Meet Our Board

The Rio Grande Regional Hospital Board of Trustees is comprised of respected physicians and community business leaders. The Board’s role is to assist in developing the hospital’s strategic direction and focus, to help evaluate the hospital’s delivery of care, and to develop new service lines and programs that ensure our patients are provided the most technologically advanced, compassionate and cost-effective health care.

Debra BrooksDebra Brooks

Debra Brooks was born and raised in McAllen, TX, and attended McAllen public schools. She is a graduate of Baylor University with a degree in Public Administration and Political Science and has worked in the travel industry for over 30 years in McAllen. She currently owns and operates Shands Brooks Travel Service.

As a long time member of the First United Methodist Church, she has served on their Board of Trustees as well as their Administration Board. Mrs. Brooks also served on the Board of Palmer Drug Abuse both as a member and an officer and she currently serves as an Advisory Member.As a member of Junior League of McAllen for over 20 years, Mrs. Brooks served on many committees during her tenure. She was a member of the Executive Committee and also served as President of the organization.Mrs. Brooks is married to Eldon Brooks. They have one daughter, Kimberly Brooks Barnett, and two stepchildren.

Irma GarzaIrma Garza

Irma Garza has been an active member of the community over the years serving on numerous organization and boards. Mrs. Garza was very involved with the Junior League of McAllen where she served as president and Sustaining Chair. She continues to be involved in committees to help the Children and Women in the community by participating in projects like The Vannie E. Cook Jr. Children’s Cancer and Hematology Clinic Celebration of Heroes and the McAllen Chamber of Commerce Project Runway RGV. In addition, she is also a member of the Rio Grande Valley Chapter of the American Institute of Certified Public Accountants. Irma has two daughters, Allison and Brittany.

Alter HolandAlter Holand

Alter Holand was a member of the United States Army Reserves from 1969-1975 and earned his Bachelor of Business Administration degree from Southwest Texas State University in San Marcos, TX. Mr. Holand has been an active member of the community over the years serving on numerous boards and philanthropic affiliations.

Mr. Holand and his wife, Mara Lessa, have one daughter and one son.

Richard Moore, M.D.Richard Moore, M.D.

Richard Moore, M.D. is a board certified Internal Medicine physician who has been on staff at Rio Grande Regional Hospital since August 2007. He currently serves as the Medical Director of Emergency Services through the Schumacher Group.

Dr. Moore graduated from the University of Texas Southwestern School of Medicine in Dallas, TX, and did a surgical internship at the University of South Carolina in Charleston. In addition, Dr. Moore also completed an internal medicine residency with the RAHC-UT Health Science Center in Harlingen, TX.

Brent BaldreeBrent Baldree

Brent Baldree is a native of Portland, TX and the chief lending officer and market president of Texas Regional Bank in McAllen. He is a graduate of Southwest Texas State University and the Southwestern School of Banking of Southern Methodist University. Mr. Baldree has also served as the president of the Texas International Fishing Tournament Board, board secretary of the Palm Valley Animal Center, board chairman of “Smokin’ on the Rio” and board treasurer of the Rio Grande Partnership. He is also a member of the McAllen South Rotary.Mr. Baldree and his wife, Melissa, have two daughters, Sydnee and Sofia.

Dr. Chris A. FreelsDr. Chris A. Freels

Dr. Chris A. Freels is a native of McAllen. He graduated from Sharyland High School, Sul Ross State University and earned his D.D.S. degree from the University of Texas Dental Health Branch in Houston, where he also received numerous awards of academic excellence. He has practiced in McAllen since 2004 and was one of the youngest board-certified orthodontists in the state. His dedication to serve those in the Rio Grande Valley shows in his time on the board of directors for the McAllen Boys and Girls Club, Covenant Christian Academy and the Rio Grande Chapter of the Fellowship of Christian Athletes.

Tyler StoneTyler Stone

Tyler Stone is a native of San Antonio. He earned a bachelor’s degree in electrical engineering from Texas A&M University and an M.B.A. at Southern Methodist University. He previously worked for National Instruments in Austin and Deloitte Financial Advisory Services in Dallas. Since 2012, he has worked in McAllen with the private investment group Rioco Partners/Mayfair Properties, overseeing private equity investments and real estate projects.Mr. Stone is married and has two children, Grayson and Georgia.