Acid Reflux Burning You Up? GastroEsophageal Reflux Disease (GERD), also known as acid reflux, can cause painful swallowing, nausea and heartburn. See how we can help. Our Portal is YOUR Portal Replace offers a free online Patient Portal where you can access information about your care and communicate with your provider. Learn more here . Visitor Restrictions Before visiting a patient at McKenzie-Willamette, please take time to review these visitor restrictions. Learn more here.