Advanced Practice Clinicans
Bill Butler, PA-C
Specialist
Mr. Butler completed his Bachelors in PA studies at The University of Texas Southwestern School of Allied Health in Dallas, Texas. He joined the faculty in 2012. His area of focus is surgical critical care.
Amanda B. Loquias, RN, MSN
Faculty Associate
Ms. Loquias earned her Master’s of Science in Nursing at the University of Texas Health Science Center at San Antonio in 2005 and is certified as a Family Nurse Practitioner. Amanda joined the Division of Trauma (full-time) in March of 2009. She serves as a Nurse Practitioner with the resident team providing care to our Pediatric Trauma and Emergency Surgery patients.
Ernest L. Wheeler, PA-C
Specialist
Mr. Wheeler earned his Master’s Degree in Physician Assistant studies at the University of Texas Health Science Center- San Antonio. He now works with us in Trauma and Emergency Services. He also has a Bachelor of Science in Biology which he received at the University of the Southwest. Before becoming a Physician’s Assistant, Mr. Wheeler worked in New Mexico for the City of Hobbs Fire Department. His responsibilities included Assistant Fire Chief, Operations Commander, EMT-Paramedic, Fire Officer/EMT, and an EMT Instructor/Coordinator. It is no wonder that Trauma and Emergency Services is where he would continue as a Physician Assistant.
Mary Von Heiland, MSN, RN, CPNP
Specialist
Mrs. Von Heiland earned her Master’s of Science degree in Nursing from Texas Tech University. She graduated summa cum laude in 2014 and is certified as a Pediatric Nurse Practitioner. Mary completed a post master’s certificate in Pediatric Acute Care from UT El Paso in 2016. She joined the Division of Trauma in May of 2015 and serves as a Nurse Practitioner with the resident team providing care to our Pediatric Trauma, Burn, and Emergency Surgery patients.
Daniel Martin, MSN, RN, AGACNP-BC
Specialist
Mr. Martin is an Acute Care Nurse Practitioner and earned his Master’s Degree from the University of Texas at Arlington. He received his BSN at the University of Texas at Austin and previously worked as a registered nurse at Clements University Hospital and St. Paul University Hospital at the University of Texas Southwestern Medical Center in Dallas prior to becoming certified as a nurse practitioner. He serves as an advanced practice provider with the resident team providing care for our Trauma and Emergency Surgery patients.
Joe Martinez, MSN, RN, AGACNP-BC
Specialist
Mr. Martinez is an Acute Care Nurse Practitioner and earned his Master’s Degree from UT Health San Antonio. He received his Bachelor’s Degree in nursing from the University of the Incarnate Word in 2012 and worked as a registered nurse in the Surgical Trauma Intensive Care Unit at University Hospital. He joined the Division of Trauma in 2019 and works with the resident team in providing care for our Trauma and Emergency Surgery patients.