What are Dr. Gustavo Ferreira, MD's top areas of care? Dr. Ferreira frequently treats Obstructive Lung Disease and Sleep Apnea. See all practice areas where Dr. Ferreira specializes. Where is Dr. Gustavo Ferreira, MD's office located? Dr. Ferreira's office is located at 220 W Goodwin St Ste B, Pleasanton, TX 78064..