Photo of Jeffrey M Douglass

Jeffrey M. Douglass, MD

Languages: English
Accepting New Patients
Professional Statement
"I strive to care for my patients with honesty, love and excellence; as I would want my family or myself to be treated if our roles were reversed." Dr. Douglass was raised in southwest Portland, graduated from Tigard High School, and received his undergraduate degree in biology at Pacific Lutheran University. While at Pacific Lutheran, he competed on PLU's collegiate football team, was a captain on the 1993 National Championship team, and was selected as PLU's "Co-Man of the Year in Sports for 1993." He earned his MD at Oregon Health & Science University (OHSU), where he also completed an internal medicine internship and residency. A highlight of training was being selected to travel on an international medical trip to Eldoret, Kenya. He completed a three-year gastroenterology fellowship at the University of New Mexico, Albuquerque. Before joining The Oregon Clinic - Gastroenterology South, Dr. Douglass conducted research on ethnicity and hepatitis C cure rates with Pegylated Interferon and Ribavirin. He also conducted an analysis of endoscopy for iron deficiency anemia. Both of these were selected for oral presentation at the American College of Gastroenterology yearly national meeting, where Dr. Douglass presented his findings. When away from work, Dr. Douglass enjoys spending time with his wife and their five children. He spends time watching and occasionally coaching sports teams. He is active in his church, Younglife, and also enjoys water sports, snow skiing, mountain and road cycling.
Oregon Health & Science University School of Medicine
Medical School
Oregon Health & Science University School of Medicine
University of New Mexico School of Medicine
Board Certifications
  • American Board of Internal Medicine, Gastroenterology
Clinical Interests
  • anemia
  • anorectal cancer
  • barretts esophagus
  • bile duct occlusion
  • blood in stool
  • capsule endoscopy
  • celiac disease
  • colonoscopy
  • colorectal malignancy
  • colorectal screening
  • diarrhea
  • digestive disorders
  • dysphagia
  • endoscopic retrograde cholangiopancreatography
  • esophageal stricture
  • gallbladder disease
  • gastric ulcer
  • gastritis
  • gastroenteritis
  • gastroesophageal reflux disease
  • gastroparesis
  • gluten sensitivity
  • hepatitis
  • hereditary nonpolyposis colorectal cancer
  • irritable bowel syndrome
  • malignant neoplasm of colon
  • melena
  • peptic ulcer
  • rectal bleeding
  • regional enteritis
  • sigmoidoscopy
  • stomach cramps
  • ulcerative colitis
The Oregon Clinic-Gastroenterology South at Tualatin
19250 Southwest 90th Avenue
Tualatin, OR 97062
The Oregon Clinic-Gastroenterology South at Newberg
1003 Providence Drive Suite 315
Newberg, OR 97132
Affiliated Facilities
Providence Willamette Falls Medical Center
Providence Newberg Medical Center