TGCPAA Board of Directors

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Witz, Barbi

Graduate of Baylor College of Medicine PA program in 1987. She is board certified by the NCCPA and is licensed by the Texas Medical Board to practice medicine. After graduation, she joined an Ob-Gyn group in Houston. She moved to San Antonio and served as Clinical Coordinator of the Advanced Practice Provider Department at RIOSA hospital, where she gained experience in Physical Medicine and Rehabilitation that included neuro, ortho, burn, and spinal cord rehabilitation. After moving back to Houston, she became Faculty at BCM in the Surgery Department and Allied Health Department and is now at UTHSC in the Center for Advanced Heart Failure. She is one of the charter members of TGCPAA.
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Praznik, Alisha

Alisha has a Bachelor’s degree in Biology & Psychology from the University of Mary-Hardin Baylor. In 2005 she received her Master’s degree in Physician Assistant Studies from the University of Texas Medical Branch. She began her career at the University of Texas, MD Anderson Cancer Center in the department of Plastic/Reconstructive Surgery. Alisha has worked in conjunction with UTMB, BCM, & TAPA teaching PA students suturing techniques. Alisha has been a member of TGCPAA for several years and served as TGCPAA Secretary from 2009-2013.
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Hernandez, Sarah

Sarah received her bachelor's degree in Biology from Texas A & M- Corpus Christi in 2002. In 2005, she received her Master’s degree in Physician Assistant Studies from the University of Texas Medical Branch. She began her career in an Aesthetic and Reconstructive surgery in private practice in Houston, Texas from 2005-2009. The last 4 years she has been at MD Anderson Cancer Center in the department of Plastic and Reconstructive Surgery. Sarah has participated in instructing suture workshops to PA students with UTMB and TAPA for the past 4 years. Sarah has been a member of TGCPAA since 2010.
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Treadway, Christen

Christen received her Bachelor's Degree in Human Development and Family Studies from the University of Illinois in 2001 after which she worked as a Certified Child Life Specialist in Austin for 5 years. She attended Baylor College of Medicine and received her Master's Degree in Physician Assistant Studies in 2009. After graduation, she joined the Plastic and Reconstructive Surgery Department at MD Anderson Cancer Center. Christen joined TGCPAA in 2008 as a student.
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Parker, Sharon

Attended San Jacinto College-South Campus, College of the Mainland, and UTMB-Galveston. She has been a Physician Assistant for 15 years and an LVN for 20+ years. Currently employed by UTMB-CMC for over 7 years and contracted out to TDCJ as a Mental Health/Mid-Level Provider (MH/MLP). She covers 3 units which includes both females (2) and males (1) via DMS (Digital Medical Services). In addition to the above, P.A. Parker also provide psychiatric services to South Texas ISF inmates located in downtown Houston.
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Teague, Ryan

Obtained his Bachelor’s degree in Biology/Pre-Med from the University of Rochester in 2000. After undergraduate studies, Ryan taught high school physics in Boston until moving to Houston where he became a research technican at Baylor College of Medicine in the Neuroscience/Pediatrics departments under Drs. Huda Zoghbi and Paolo Moretti. He attended PA school at BCM where he received his Master’s degree in Physician Assistant Studies in 2007. Since graduation Ryan has worked at Kelsey-Seybold Clinic in Orthopedic Surgery. Has been a member of TGCPAA since 2005 as a student.

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