Our Leadership

HCA Affiliated Rio Grande Regional Hospital is led by a team of more than 1,100 employees and 500 physicians. This team is supported by a notable Board of Trustees, comprised of respected physicians and community business leaders.

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

Cris Rivera - CEOCris Rivera - CEO

Cris Rivera comes to RGRH from HCA affiliated Allen County Hospital (ACH) in Iola, Kansas. Rivera, 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, Rivera 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, Rivera 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 Rivera held her first healthcare position as a lab supervisor at Rio Grande Regional Hospital and after completing the HCA Chief Operations Officer (COO) Development Program in 2004 Rivera served as COO at HCA affiliated Valley Regional Medical Center (VRMC) in Brownsville, Texas.

Rivera 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, David Christian and their daughter-in-law Erica Lynn.

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 nearly 30 years of nursing and management practice, Kathy has been very successful during her career in recruiting and retaining staff members, initiating a nursing scholarship program in conjunction with the medical staff and health system’s foundation. Among her achievements, she 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 their three pets: Tres, BJ and Jessie, and likes reading, swimming and gardening.

Matt Wolthoff, COOMatt Wolthoff, COO

Matt Wolthoff joined RGRH 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. While serving at the three facilities, which combined accounted for over a thousand licensed beds, he managed several ancillary and support service departments, improved employee engagement, and enriched the patient experience. Matt’s experience and excellent performance throughout his career will be a tremendous benefit to Rio Grande Regional Hospital and the community of McAllen.

Matt is a Fellow in the American College of Healthcare Executives, earned a Master of Business Administration with a Healthcare Concentration from the University of Texas – San Antonio and Bachelor of Science in Management from the United States Air Force Academy.

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 the island fishing.

Charles Mallon, CFOCharles Mallon, CFO

Charles “Chuck” 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, Colorado where he has been serving as Controller since 2009.

Mr. Mallon began his career in healthcare in 1994 at the Arapahoe House Foundation in Thornton, Colorado 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 a comprehensive budget system which reversed years of operating loss 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 his Master of Science in Taxation from Walsh College in Troy, Michigan and his Bachelor of Science in Business Administration from Central Michigan University in Mount Pleasant, Michigan. He is also a charter member of the CMU Mutt Squad.

Chuck enjoys traveling with his wife of 30 years, Karen, swimming, playing and watching hockey as well as playing the guitar. Chuck and Karen have one son, Kendall, who is currently attending the University of Colorado.

Meet Our Board

Fredricka M. Borland, M.D.Fredricka M. Borland, M.D.

Dr. Fredricka M. Borland is a Board Certified surgeon and has been on staff with Rio Grande Regional Hospital for over 15 years. Dr. Borland received her bachelor’s degree from Vanderbilt. She went on to attend the Baylor College of Medicine in Houston, Texas where she completed her medical degree in 1972. Dr. Borland performed a Surgery Internship at Vanderbilt University in Nashville, Tennessee. She went on to complete two residency programs in Surgery, one at Vanderbilt in 1979 and the other at the Medical University of South Carolina College of Medicine in Charleston, South Carolina in 1981.

Dr. Borland is a member of the American Board of Surgery; a member of the American Medical Association; a member of the Texas Medical Association; a member of the Hidalgo-Starr County Medical Society; and a Fellow of the American College of Surgeons.

Debra BrooksDebra Brooks

Debra Brooks was born and raised in McAllen, Texas 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 in 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, and they have one daughter, Kimberly Brooks Barnett, and two step children.

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 Leadership McAllen and Junior League of McAllen where she served as president. In addition, she is still a member of the Rio Grande Valley Chapter of the American Institute of Certified Public Accountants.

Irma and her husband Carlos have 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, Texas. Alter has been an active member of the community over the years serving on numerous boards and philanthropic affiliations. Since 1974, Mr. Holand has been the President of Liverpool of McAllen, Inc.

Alter and his wife Mara Lessa have one daughter and one son.

Dr. Billie J. MarekDr. Billie J. Marek

Dr. Billie J. Marek is Board Certified in Medical Oncology and Internal Medicine and has been on staff with Rio Grande Regional Hospital for over 20 years. Dr. Marek received his Bachelor of Science in Biology from Texas A&M University in College Station, Texas and received his graduate degree from the University Of Houston- School Of Pharmacy in Houston, Texas. He went on to attend the University of Texas Health Science Center in San Antonio, Texas where he received his Doctor of Medicine in 1983. Dr. Marek then completed his residency in Internal Medicine at the University of Kentucky Medical Center in Lexington, Kentucky and his Fellowship in Medical Oncology at the University of Texas System Cancer Center, M.D. Anderson Hospital and Tumor Institute in Houston, Texas.

Dr. Marek has been in private practice since 1988 at the South Texas Cancer Center now named, Texas Oncology. He is a member of the American Medical Association; a Fellow of the American College of Physicians; a member of the American Society of Clinical Oncology; a member of the Texas Society of Medical Oncology; a member of the Texas Medical Association; a member of the Texas Medical Foundation; a member of the Southern Medical Association; a member of the M.D. Anderson Associates; a member of the Hidalgo County Medical Society; and a founding member of the Southern Association for Oncology.

Dora BrownDora Brown

Dora Brown serves as senior vice president of marketing and international banking at IBC Bank in McAllen, spearheading the bank’s marketing and public relations efforts. Under her leadership, IBC has led many community outreach efforts that focus on our nation’s military as well as financial education for area youth, among other causes. Mrs. Brown has also lent her talents to numerous community organizations, including the McAllen Independent School District Foundation Board, the Teach the Children Advisory Board, the Texas Bankers Education Board, and the Children’s Defense Fund of McAllen. She is also an active member of the McAllen Chamber of Commerce and is a past Chairperson. Throughout her career she has been recognized by organizations like the United States Hispanic Chamber of Commerce for her community leadership and service.

Mrs. Brown attended Texas Southmost College in Brownville, Texas, and Robert E. Lee College in Baytown, Texas. She currently resides in McAllen with her husband of 40 years, Joe Brown. They have one daughter Jamie-Lynne who is a graduate of Southwest Texas State University in San Marcos, Texas and received her master’s in Higher Education from the University of Texas in Austin.

Rick GuerraRick Guerra

Rick Guerra is CEO of the Restaurant Division and Senior Vice President of Operations for the Hotel Division of Costillas, LTD, Castle Hospitality, and Pasta Ventures. Mr. Guerra serves as an active officer of RGV Properties, and he along with his partners own and operate multiple hotels and restaurants throughout the Rio Grande Valley. He also served as Chairman of the McAllen Chamber of Commerce and is a well known and respected leader in our community.

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 RGRH 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, Texas and did a surgical internship at the University of South Carolina in Charleston. He completed a general surgery residency at St. Paul Medical Center in Dallas and a family practice residency at the University of Texas San Antonio – McAllen Branch. Dr. Moore also completed an internal medicine residency with the RAHC-UT Health Science Center in Harlingen, Texas.

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101 East Ridge Road