Why Choose American Sinus Institute? At American Sinus Institute we have a team of expert ENT staff, including physicians and clinicians who are dedicated to providing you with the highest quality of care. You’ll find that all of our physicians are board-certified in Otolaryngology. Our Clinicians have extensive training in ENT and meet all of the highest education standards. If you are looking for a sinus doctor in South Texas to provide you with relief from sinusitis, snoring, or even sleep apnea, please do not hesitate to give American Sinus Institute a call. Our team of experienced ENT Surgeons and physicians are ready to help.