Dr. David J. Drewitz is a gastroenterologist in Phoenix, Arizona and is affiliated with multiple hospitals in the area, including Banner Estrella Medical Center and Banner-University Medical Center Phoenix. He received his medical degree from Medical College of Wisconsin and has been in practice for more than 20 years. Dr. David J. Drewitz has expertise in treating colonoscopy, upper gi endoscopy, inflammatory bowel disease (ibd), among other conditions - see all areas of expertise. Dr. David J. Drewitz accepts Medicare, Aetna, Humana, Cigna, Blue Cross, United Healthcare - see other insurance plans accepted. Dr. David J. Drewitz is highly recommended by patients.