Erin Munoz, MS, PA-C, earned her Master of Science in Physician Assistant Studies at Baylor College of Medicine in Houston, Texas, graduating with high honors in 2010. She also holds a Bachelor of Science in microbiology from the University of Texas at Austin, where she was awarded highest honors in 2008. Erin joined Kelsey-Seybold's Family Medicine department as an experienced certified physician assistant in October 2025. She sees patients of all ages, partnering with them to improve their health with well checks, care for acute illness, and management of chronic health conditions such as diabetes mellitus, hypertension, and hyperlipidemia. She can also perform in-office procedures such as skin tag removal, suture removal, and more.

Crysta Williams, PA-C, first completed advanced individualized training at Fort Sam Houston in the U.S. Army's Interservice Physician Assistant Program. She then attended the University of Oklahoma, earning her Bachelor of Science in biology in 2020. Crysta then went on to the University of Nebraska Medical Center College of Medicine, where she pursued her Master of Physician Assistant Studies, completing her degree in 2024. Crysta joined Kelsey-Seybold in February 2025. She loves to listen to people, knowing it makes a world of difference to be truly heard by a provider who genuinely empathizes and will act on patient concerns. Crysta treats patients for a variety of orthopedic concerns, such as sports injuries, arthritis, and joint pain.

Tanya Foley, PA-C is a pulmonary specialist at Kelsey-Seybold Clinic.

Catherine Turner, PA-C, is a Dermatology Physician Assistant at Kelsey-Seybold Clinic in the greater Houston area. She earned her Master of Physician Assistant Studies from UT Southwestern in 2021 after earning her Bachelor's degree in Biology from Lewis & Clark College. Catherine treats patients of all ages and has clinical interests in cutaneous infections, acne, psoriasis, and skin cancer prevention and treatment. Known for her thorough and patient-centered care, she emphasizes clear communication and shared decision making

Hannah Hester, MPAS, PA-C, attended Texas Tech University in Lubbock, earning her Bachelor of Arts and Sciences in microbiology in 2020. Afterward, she relocated to Searcy, Arkansas, attending Harding University to earn her Master of Science in physician assistant studies in 2024. Returning back to Texas, Hannah joined Kelsey-Seybold's OB/GYN department as a physician assistant in February 2025. She sees patients for gynecologic issues such as pelvic pain or discomfort, breast pain or discomfort, women's annual wellness exams, menopausal symptoms, and contraception. Hannah also offers treatment for abnormal uterine bleeding, endometriosis, PCOS, infertility, menopause, sexually transmitted infections, and more.

Lindsay Rigby, PA-C, is a certified physician assistant who earned her Master of Physician Assistant Studies at Rocky Mountain University of Health Professions in Provo, Utah, in 2025. She also holds a Bachelor of Science degree from Utah Valley University where she graduated summa cum laude in 2023. Lindsay joined Kelsey-Seybold's Urology department in October 2025. As a certified physician assistant, she treats a wide range of general Urology concerns such as urinary incontinence, kidney stones and kidney disease, overactive bladder, urinary tract infections, and more. No matter what brings her patients to her, Lindsay strives to make her patients as comfortable and supported as possible.