Sarah Aguilar, MSN, APRN, FNP-C

Sarah is a family nurse practitioner, who has specialized in sleep medicine and neurology, for over fifteen years. She has become well-known in her field, as she speaks nationally to her peers about Narcolepsy, Sleep Apnea, and RLS.

Sarah completed her bachelor’s in nursing from University of Southern California in 1999. She began her work as a nurse on a telemetry unit, caring for cardiac patients after angiograms and open-heart surgeries. Her favorite position as a nurse was in the emergency room, where she cared for cardio-pulmonary emergencies and took on the roles of charge nurse and paramedic radio nurse.

After completing her master’s degree with honors as a family nurse practitioner from Azusa Pacific University in 2004, Sarah worked at the campus’ University Health Center. In 2007, Sarah married Gabriel and they soon moved to Texas (later having two boys whom she is proud to say are born and raised in the great state of Texas).

She began working in the field of sleep medicine shortly after the move, which quickly became her true passion. Sarah is fortunate to have trained under Drs. Todd Swick and Gerard Meskill, both experts in sleep, whom she credits with her knowledge and experience. From her time working with cardiac patients early on as a nurse, and her knowledge of the long-term cardiac effects of untreated sleep apnea, she works very closely with her patients to verify sleep apnea treatment is effective.

What sets Sarah apart from traditional specialists, is that she recognizes all aspects of her patients’ lives (schedule, family situation, stress, co-morbid conditions, etc.), affect their sleep and makes it her goal to treat each patient with customized care to improve sleep and manage headaches. As a previous ER nurse, Sarah had the opportunity to save lives. Now as a sleep and headache specialist, Sarah helps patients get their lives back.

We are thrilled to have Kelli join our team as a full-time medical assistant in 2025. Having earned her Bachelor of Arts degree in Political Science from Texas State University, Kelli has a professional background in consultative sales, as well as health and wellness. She enjoys interacting with each patient and creating a friendly, at home environment. Kelli is a native Houstonian and, along with her husband Jason, has raised her three children in the Cypress area.

Erin joined the Sleep and Headache Solutions team as a Medical Assistant in July of 2025. Erin earned her Bachelor of Science Degree in Exercise Physiology and Health Promotion from Southeastern Louisiana University. Following graduation, she worked in Cardiac Rehab for St. Tammany Parish Hospital in Covington, Louisiana. Erin strives to meet the needs of each individual patient while ensuring their care and well-being are the main focal point.

Erin moved to the Houston area in 2010 and has established lifelong connections and friendships in the Fairfield community. She is a devoted wife and mother, and enjoys spending time with her two high school age children.

Betty joined our team in 2022 as “temporary help.” Fortunate for us, she has continued serving our patients and assisting our staff. With a professional background in health insurance, working for Prudential, Aetna, and Pacificare since 1997, she has an expertise in prior authorizations and billing. Betty is motivated, hardworking, and friendly as she prioritizes the needs of each patient she cares for. When not working, Betty enjoys spending time with her loving husband and three pups (two Chiweenies and a Bichon Frise), who she considers her very spoiled “kids.”