Pangan, Marissa

Alexandrya Tran, MSN, AGACNP-NC, is a Nurse Practitioner at Kelsey-Seybold Clinic. In 2017, Alexandrya completed a Bachelor of Science in Nursing with honors from Texas Woman's University. She then returned to the University of Texas Medical Branch where she obtained a Master of Science in Nursing to become an Acute Care Adult Gerontology Nurse Practitioner in 2021. Alexandrya treats adult patients with both chronic and acute conditions. Before joining Kelsey-Seybold Clinic in 2023, Alexandrya worked as a clinical nurse, an ICU nurse, and a nurse practitioner.

Gina Mercado, AGACNP-BC, is a Cardiology nurse practitioner at Kelsey-Seybold Clinic in the Greater Houston Area.

Christy Knowles, APRN, PNP-PC, is a certified pediatric nurse practitioner at Kelsey-Seybold. She earned her Bachelor of Science in Nursing at the University of Mississippi School of Nursing in Jackson. She then relocated to Texas, attending the University of Texas Health Science Center at Houston Cizik School of Nursing to earn her Master of Science in Nursing - Pediatric Nurse Practitioner. Christy joined Kelsey-Seybold in March 2025. She offers primary well care and annual checkups in addition to sick care for acute illness and injury. Christy also helps manage chronic conditions such as asthma, acne, allergies, and more. Her clinical interests center on wellness care, obesity management and prevention, and care for student athletes.