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Texas Medical Center

Phone: 832-822-3180
Fax: 832-325-3192


6701 Fannin Street
Suite 610
Houston, TX 77030

Diana E. Guillen, PA-C

Physician Assistant-Certified

Advanced Practice Provider Team Lead for the Division of Plastic Surgery
Social Events Commissioner for Department of Surgery Advanced Practice Providers


School Education Degree Year
University of Texas Medical Branch Masters Master of Physician Assistant Studies 2007


Diana E. Guillen, MPAS, PA-C, is a physician assistant in the Department of Pediatric Plastic and Reconstructive Surgery at Texas Children’s Hospital. She began her surgical career in 2008 and was previously trained with Plastic Surgeons at the Institute of Reconstructive Plastic Surgery at the University Medical Center Brackenridge Hospital in Austin, TX. She then joined the Pediatric Plastic Surgery team at TCH in 2015 and has continued to build on her interest in caring for both pediatric patients and plastic surgery conditions. She currently treats and cares for patients who are affected with craniofacial anomalies (such as congenital cleft lips and palates, and craniosynostosis), pediatric breast related complications, and vascular anomalies. In addition, she also helps to provide care for much of the pediatric population in our region affected by hand trauma, fractures and complicated wounds.  Aside from her listed clinical responsibilities, she also helps to organize and lead the Advanced Practice Providers in the division.  Her tasks as social event commissioner for Department of Surgery APPs, involves the coordination of many team building events and festivities.

Diana received her undergraduate degree in Biology from the University of Notre Dame and then proceeded to obtain a Master of Physician Assistant Studies from the University of Texas Medical Branch in Galveston. She is certified through the National Commission on Certification of Physician Assistants and medically licensed through the Texas Medical Board.

Diana’s professional memberships include the American Academy of Physician Assistants, Texas Academy of Physician Assistants, Association of Plastic Surgery Physician Assistants, and American Cleft Palate- Craniofacial Association.


Organization Name Role
American Academy of Physician Assistants
American Cleft Palate- Craniofacial Association

Association of Plastic Surgery Physician Assistants
Texas Academy of Physician Assistants

Patient and Family Comments

* Texas Children's Hospital physicians' licenses and credentials are reviewed prior to practicing at any of our facilities. Sections titled From the Doctor, Professional Organizations and Publications were provided by the physician's office and were not verified by Texas Children's Hospital.