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Phone: 800-275-6401
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To schedule an appointment

Providers call:1-800-332-8901
Patients call:1-800-275-6401

This provider sees patients at the following locations:

Gastroenterology Electric Ave Lewistown
310 Electric Ave Suite 100
Lewistown, PA 17044
Gastroenterology Gray's Woods State College
132 Abigail Lane
Port Matilda, PA 16870
Gastroenterology Moshannon Valley Philipsburg
210 Medical Center Dr
Philipsburg, PA 16866

There is no publicly available rating for this care provider for one or more of the following reasons:
  1. He or she does not see patients in the outpatient clinic setting.
  2. He or she sees patients, but has not yet received the minimum number of Patient Satisfaction Reviews. To be eligible for display, we require a minimum of 30 surveys. This ensures that the rating is accurate and statistically reliable.
  3. He or she is a community provider, not a Geisinger-employed provider. Community providers tend to see patients in their own private outpatient practices, which we do not survey.

Duncan, Marten B, DO Visit for information on Marten B Duncan, DO. Find contact information, medical education, affiliated hospitals and more.
Overall Rating:
4.8 out of 5
1 71 ratings

Practicing Specialties:

  • Gastroenterology, Board Certified, 2004


  • College of Osteopathic Medicine of the Pacific 1998


  • Madigan Army Medical Center 2001


  • Walter Reed Army Medical Center 2004
  • U. of Maryland Medical Center 2005
    Hepatology and Endoscopic Ultrasound

Clinical Interests:

ERCP and diseases of the biliary tree
Evaluation of pancreatic diseases (cystic masses of the pancreas)
Endoscopic ultrasound (EUS) and fine needle aspiration (FNA)
Gastrointestinal stenting
Evaluation and management of autoimmnue hepatitis, hemochromatosis, PSC, PBC

Professional Memberships:

  • American College of Gastroenterology
  • American Society of Gastrointestional Endoscopy

Patient Satisfaction Ratings:

The Patient Satisfaction Rating is an average of all responses to care provider-related questions on our nationally recognized Press Ganey Patient Satisfaction Survey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Learn more about our survey >
1. Friendliness/courtesy of provider
- 4.9 out of 5
2. Provider explanations of prob/condition
- 4.8 out of 5
3. Provider concern for questions/worries
- 4.8 out of 5
4. Provider efforts to include in decisions
- 4.7 out of 5
5. Provider information about medications
- 4.7 out of 5
6. Provider instructions for follow-up care
- 4.7 out of 5
7. Provider spoke using clear language
- 4.8 out of 5
8. Time provider spent with patient
- 4.7 out of 5
9. Patients' confidence in provider
- 4.8 out of 5
10. Likelihood of recommending provider
- 4.7 out of 5

Patient Comments:

The comments are submitted by patients (or their caregivers) and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Geisinger. Learn more about our survey >
Jul 6
Very good.
June 30
Dr. Marten B. Duncan, DO - Is the best!!!
May 26
I found Dr. Duncan to be very down-to-earth - easy to talk to in laymen's terms.
Apr 29
Dr. Duncan was impressive, friendly, concerned & responsive!! This was a consultation visit made me want to switch to Geisinger!
March 23
Dec 9, 2015
Provider expressed that he was "tired" which made me wonder if he was really listening to what I was saying. He also laughed at one of my concerns which made me again wonder if he was really concerned. I was having abdominal pain for several months and he did NOT listen to my bowel sounds or assess my abdomen other than a cursory palpation of the quadrants. He also wanted to start me on medication that "causes diarrhea for 2 weeks" 2 weeks prior to Christmas. How compliant do you think someone is going to be with that?
Dec 1, 2015
I am so glad to be referred to Dr. Duncan. He is an awesome doctor and very thorough.
Oct 30, 2015
I really like this dr. and would recommend him to everyone.