Gastroenterology South - Oregon City





About
Where quality care is the "scope" of our practice
At The Oregon Clinic Gastroenterology South, we strive to make your visit with us as quick and caring as possible. The first step is to contact us for an appointment by calling 503-692-3750 during our office hours, which are weekdays from 8 a.m. to 4:45 p.m. Each step along the way, you can count on fine, personalized outpatient care from our specialized and highly-skilled medical, nursing, and support staff.
Once you have your appointment, please arrive at least 15 minutes early, and bring your referral forms (if required), insurance information and co-payments. We will automatically request your medical information from your primary care provider before your visit. When you schedule, please let us know if you’ve had any relevant x-rays, ultrasounds or other imaging studies.
Medical emergencies may cause unexpected delays in our schedule. Your patience and understanding are appreciated. If you must cancel or reschedule your appointment, please call us as soon as possible.
In addition to diagnosing and treating problems
The Gastroenterology Specialists provide prevention and early detection procedures, including endoscopy, which uses narrow, flexible lighted tubes with built-in video cameras to inspect the inside of the intestinal tract. Our physicians are specially trained to perform colonoscopies (scope of the large intestine), upper endoscopies (scope of the esophagus, stomach, and duodenum), endoscopic ultrasounds and other sophisticated endoscopic procedures.
Since November 2014, each of our three gastroenterology groups has been participating in the GI Quality Improvement Consortium (GIQuIC) program. Being part of this organization requires a focus on enhancing patient care through real-time peer-based performance evaluation. Click to read more on the GIQuIC website.
GI South has been recognized by the American Society for Gastrointestinal Endoscopy for promoting quality in endoscopy. Congratulations to such a hard-working team!
Endoscopy Center Ownership
Paul Anderson, MD
Brian Applebaum, MD
Michelle Beilstein, MD
Mark Cahill, MD
C.Y. Michael Chang, MD
Stephen Chen, MD
Ryan Childers, MD
Jeffrey Douglass, MD
Jeffrey Duman, MD
Sarah Lee, MD
Ronald Lew, MD
Nima Motamedi, MD
Monina Pascua, MD
Swapna Reddy, MD
Mark Schiele, MD
Erik Van Kleek, MD
Zibing Woodward, MD
Team
- Colon Cancer Screening & Prevention
- Gastroesophageal Reflux Disease (GERD)
- Inflammatory Bowel Disease (IBD)
- Liver Disease
- Swallowing Dysfunction
- Colon Cancer Screening & Prevention
- Diseases of the Liver & Biliary Tract
- Inflammatory Bowel Disease (IBD)
- Colon Cancer Screening & Prevention
- Gastroesophageal Reflux Disease (GERD)
- Inflammatory Bowel Disease (IBD)
- Liver Disease
- Swallowing Dysfunction
- Barrett's Ablation
- Small Bowel Diseases
- Colon Health
- Gastroenterology
- Hepatology
- Liver Disease
- Inflammatory Bowel Disease (IBD)
- Colon Cancer Screening & Prevention
- Gastroesophageal Reflux Disease (GERD)
- Disorders of the Stomach & Small Bowel
- Irritable Bowel Syndrome (IBS)
- Gastroesophageal Reflux Disease (GERD)
- Inflammatory Bowel Disease (IBD)
- Esophageal Disease & Swallowing Disorders
- Gastroparesis
- General Gastroenterology
- Colon Cancer Screening & Prevention
- Gastroesophageal Reflux Disease (GERD)
- Inflammatory Bowel Disease (IBD)
- Esophageal Disorders
- General Gastroenterology
- Inflammatory Bowel Disease (IBD)
- Gastroesophageal Reflux Disease (GERD)
- Colon Cancer Screening & Prevention
- Gastroesophageal Reflux Disease (GERD)
- Diarrhea
- Fecal Incontinence
- Celiac Disease
- Colon Cancer Screening & Prevention
- Gastroenterology
- Hepatology
- Inflammatory Bowel Disease (IBD)
- Women's Health
- Advanced Inflammatory Bowel Disease (IBD)
- Small Bowel Pathology & Double Balloon Enteroscopy
- Barrett's Esophagus & Esophageal Cancer
- Colon Cancer Screening & Prevention
- Liver Disease
Services & Procedures
Our providers use a variety of procedures to help heal and prevent cancer including:
Endoscopic Retrograde Cholangio Pancreatography (ERCP)
We also provide a full spectrum of GI services and treat many conditions including:
Collagenous Colitis & Lymphocytic Colitis
Diverticulosis and Diverticulitis
Gastroesophageal Reflux Disease (GERD)
Inflammatory Bowel Disease (IBD)
Irritable Bowel Syndrome (IBS)
Peptic Ulcers and Non-Ulcer Dyspepsia
Prevention of Colon Polyps & Cancer
Forms
We encourage all patients to complete check-in forms before their appointment.
If you are registered with InteliChart PatientPortal, you will:
- Receive a link to your check-in forms by email about 14 days before your visit
- Complete and submit your forms before your appointment
If you are not registered with InteliChart PatientPortal:
- Call your clinic to sign up for the portal
- The office will text or email you a secure link to the portal
If you are unable to complete the forms online before your appointment, please plan to arrive early to complete your forms in the waiting area before your visit.
If you have questions about check-in forms, please call the office where your appointment is scheduled.
Directions
Location
Providence Willamette Falls Medical Center
Medical Plaza Building II, Suite 15
1508 Division St, Oregon City, OR 97045
Parking
- Please take Davis Rd. to park on the Lower Level when you arrive.
Entrance
- We’re located on the Lower Level of the Medical Plaza II building.
- Follow signs to Suite 15.

Preps
- Clear Liquid Diet
- Informed Consent for Anesthesia
- Informed Consent for GI Endoscopy
- Frequently Asked Questions (Endoscopy Procedure)
Colonoscopy Prep
- Helpful Tips for Preparing for a Colonoscopy
- Colyte Prep
- Colyte-2 Day Chronic Constipation Prep
- Colyte-3 Day Chronic Constipation Prep
- Colyte with Extra Half Day Clears
- Colyte with Magnesium Citrate
- MiraLAX Prep
- MiraLAX-2 Day Chronic Constipation Prep
- MoviPrep
- Suprep
- Suprep- 2 Day Prep
- Suprep- 2 Day Prep with Magnesium Citrate
- Diabetic Diet/Medication Instructions (Colonoscopy)
- FAQs (Colonoscopy)
- Blood Thinning Agents
Upper Endoscopy Prep (EGD, ERCP, Upper Endoscopic US)
- Upper Endoscopy Prep
- Diabetic Diet/Medication Instructions (Upper Endoscopy)
- FAQ (Upper Endoscopy)
- Blood Thinning Agents
Lower Endoscopy (Flex Sig, Lower Endoscopy US)
- Sedated Lower Endoscopy Prep
- Unsedated Lower Endoscopy Prep
- Diabetic Diet/Medication Instructions (Lower Endoscopy)
- FAQ (Lower Endoscopy)
- FAQs (Lower Endoscopy with colon prep)
- Blood Thinning Agents
Esophageal Manometry and pH Impedance
- 24 Hour pH Impedance Study while on PPI
- 24 Hour pH Impedance Study while off PPI
- Esophageal Manometry Study
- Esophageal Manometry & 24 Hour Impedance Study on PPI
- Esophageal Manometry & 24 Hour Impedance Study off PPI
Additional Information For All Procedures
- Advanced Directive Information
- Billing Information
- Patients' Rights and Responsibilities
- Audio Version of Patient Rights and Responsibilities (opens new window)
- Download all additional information at once
Translated Preps