Nancy Mai, APRN, completed her medical education at the University of Texas Medical Branch at Galveston, where she earned her Bachelor of Science in Nursing in 2016 as well as her Master of Science in Nursing in 2020. Bilingual in English and Vietnamese, Nancy came to Kelsey-Seybold as a certified adult-gerontology nurse practitioner in September 2025 to care for Gastroenterology patients. Nancy provides patient-centered care that focuses on listening, diagnosing, and managing health concerns with compassion and a personalized approach. She sees patients for conditions ranging from heartburn and bloating to chronic conditions like IBS, IBD, and liver disease. Her clinical interests include colorectal cancer screening and prevention.

Marines Chapman, MSN, APRN, FNP-C, began her career in healthcare as a registered nurse, caring for patients in a variety of hospital and surgical settings. In 2018, she completed her Bachelor of Science in Nursing at the University of Texas in Arlington. She returned there to earn her Master of Science in Nursing - Family Nurse Practitioner in 2021. Marines joined Kelsey-Seybold as a family nurse practitioner in April 2025. She sees patients for a variety of urological concerns, such as pelvic floor disorders, urinary tract infections (UTIs), benign prostatic hyperplasia (BPH), testosterone imbalance, hypogonadism, bladder and kidney stones, erectile dysfunction, and more.

Erica Meeks, APRN, FNP-C, is a Family Medicine nurse practitioner at Kelsey-Seybold Clinic. She earned her Master of Science in Nursing and Bachelor of Science in Nursing from Texas Woman's University and has extensive experience in both inpatient and outpatient care. Erica sees patients across all ages for preventive care, chronic disease management, and wellness support. She is dedicated to providing compassionate, individualized care and community health education.

Emily Machann, AGNP-C, began her healthcare career as a registered nurse. After completing her Bachelor of Science in Nursing at the University of Texas at Arlington in 2018, she attended the University of Texas Medical Branch at Galveston to complete her Adult/Geriatric Primary Care Nurse Practitioner: Master of Science in Nursing in 2020. Having spent several years as an R.N. at Kelsey-Seybold earlier in her career, Emily joined the Clinic's Gastroenterology department in August 2025 as an Adult Geriatric Primary Care Nurse Practitioner. As part of the Gastroenterology care team, Emily manages a wide range of conditions, including GERD, abdominal pain, liver function abnormalities, IBS, IBD, and GI-related medication management.

After earning an Associate of Applied Science at Lamar State College in Port Arthur, Texas, Tenika Antoine, MSN, FNP-C, graduated with a Master of Nursing from Walden University in Minneapolis, Minnesota in 2018. She has over 15 years of nursing experience, and now, as a Family Medicine nurse practitioner at Kelsey-Seybold, she helps patients maintain good health and manage chronic and acute diseases such as cardiovascular disease, Type 2 diabetes, skin conditions, infections, minor injuries and more. Tenika joined Kelsey-Seybold in November 2023.