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    Board of Directors


    Alisha M. Praznik, PA-C

    Alisha completed a Bachelor of Science in Biology and Psychology from the University of Mary Hardin Baylor in 2002. She received a Master of Physician Assistant Studies from the University of Texas Medical Branch in 2005. Alisha has worked as a PA at the University of Texas, MD Anderson Cancer Center for over 11 years in the department of Reconstructive & Plastic Surgery. Throughout her career she has instructed & mentored PAs, medical students, and PA students on suturing and surgical techniques on the local, state & national level. Alisha served as TGCPAA Secretary for four years and Vice President for two years.   Alisha is on various committees within MD Anderson and is a mentor PA in the department of plastic surgery.  In 2014, Alisha was honored at MD Anderson Cancer Center as a finalist for the Geneva & James Briscoe, Physician Assistant Award for Excellence at UT MD Anderson Cancer Center and most recently she was honored with the TAPA Outstanding PA of the Year Award. 

    Vice President

    Ashley Wray, PA-C

    Ashley received her bachelor's degree in Biology from Texas A&M University in 2005, where she focused her academic efforts in neuroscience. She then went on to receive her MPH from the UT School of Public Health in 2010. During this time, Ashley worked for the Michael E DeBakey VA Medical Center investigating veterans with depression and suicide ideation, and through this experience, she discovered the role of the PA in patient care. She then pursued her master's degree at UT Southwestern Medical Center in Dallas where she graduated in 2013. Currently, Ashley is a practicing PA in the Dept. of Colon & Rectal Surgery at Memorial Hermann Southeast. When she's not at work, Ashley enjoys rock climbing, yoga, and spending time with friends and family.


    Melissa Hall, PA-C

    Melissa completed her Bachelor of Science in Biomedical Science with a minor in Pyschology from Texas A&M University in 2010.  She went on to receive her Masters of Physician Assistant Studies from University of Texas Medical Branch in 2013. Melissa began her PA career at MD Anderson Cancer Center in the Department of Plastic & Reconstructive Surgery where she worked in the Houston Area Locations (Memorial City, Katy & Sugar Land) from 2014 – 2017. She currently works at Texas Children’s Hospital in the Woodlands in Pediatric General Surgery. Melissa is active with the UTMB PA program coordinating and assisting in their quarterly Surgical Boot camps and annual suturing labs. She has also participated in Baylor PA program and TAPA suture workshops. She has served on the TAPA Membership Committee for the past several years. Melissa has been a member of TGCPAA since 2014.


    Sarah H. Hernandez, PA-C

    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 8 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 at UTMB and Baylor PA programs. She has also instructed PAs at TAPA and AAPA suture workshops. Sarah has been a member of TGCPAA since 2010. She was TGCPAA Secretary from 2013-2017.


    Troy Barry, PA-C

    PA Barry received his Bachelor of Science degree in Exercise Physiology from Montana State University. In 1995 he graduated from Baylor College of Medicine PA program with a Master of Science degree. After graduation, he joined a multispecialty group and worked in general surgery, neurosurgery, orthopedics and urology. In 1998 he transferred to MD Anderson Cancer Center as a physician assistant in Orthopedic Oncology. He was recruited to Plastic and Reconstructive Surgery in 2000. PA Barry is a Lieutenant Colonel  in the US Army Reserves; commissioned as a 65-D, physician assistant. He has been mobilized four times to practice in: a troop medical clinic, a family medical clinic, deployment medicine, general surgery and the fast track clinic in the ED. He is very involved with teaching physician assistant students from Baylor College of Medicine and precepting medical, nursing and physician assistant students at MD Anderson Cancer Center. PA Barry has given lectures locally and nationally and instructed suture workshops. At MD Anderson Cancer Center he was awarded the Geneva and James Briscoe Physician Assistant Award for Excellence in 2010. In 2015, Troy received Distinguished Fellow of the American Academy of Physician Assistants. He joined TGCPAA as a student and previously was the Vice President.


    Barbi Witz, PA-C

    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 the surgical advanced practice supervisor at UTHSC in the Center for Advanced Heart Failure. She is one of the charter members of TGCPAA and is the immediate past president of TGCPAA.