When a Patient Reports Experiencing Chronic Chest Pain That Occurs

When a patient reports experiencing chronic chest pain that occurs after meals, the provider suspects gastroesophageal reflux disease (GERD) and prescribes a proton pump inhibitor. After 2 months the patient reports improvement in symptoms. What is the next action in treating this patient?

A) Wean patient from proton pump inhibitor (PPI) .
B) Order esophageal pH monitoring.
C) Refer the patient to a gastroenterologist.
D) Schedule an upper endoscopy.