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Dr. Jeffrey Duman

Gastroenterology
Tualatin, OR
21 years experience male

Locations

Office

Tualatin, OR

Address

19250 SW 90th Avenue, Tualatin, OR
Directions

My office hours

Wednesday: 7:00am - 5:00pm
Show more

Practice website

Insurances accepted

ODS

Providence Health Plans

Regence

Aetna

First Choice Health

Health Net

Managed Health Network

MultiPlan

PacificSource Health Plans

UnitedHealthcare

Office

Newberg, OR

About

Bio

I treat a number of common gastrointestinal diseases such as gastroesophageal reflux, Barrett’s esophagus, ulcer disease, ulcerative colitis, Crohn’s disease, irritable bowel syndrome, viral hepatitis and many others. I also work with patients to evaluate and control symptoms of gastrointestinal diseases or problems, including abdominal pain, constipation, diarrhea, heartburn, indigestion and swallowing difficulties. In my free time I enjoy road biking, skiing, jogging, photography and spending time with my wife and son.

Specialties
Doctors may have more than one area of specialty interest. Board certification in a specialty area means the doctor has completed formal training and has practice experience in that specialty, and has passed the certification examination from the corresponding accredited medical specialty board.

Gastroenterology

Doctor Q&A

34 Answers
52 Agrees
The number of answers this doctor has agreed with.
A female asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Symptoms : Symptoms from food intolerance should improve with eliminating that food type, and recur with retrying. Often times there is an overlap with food in... Read More
A member asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Hypersensitivity : Hypersensitivity of the enteric nervous system manifesting as dyspepsia or visceral hypersensitivity would be most likely. Non-gi causes such as musc... Read More
A male asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
It : It is difficult to determine the cause with the evaluation you have thus far undergone. To diagnose "gastritis" a procedure looking into your stomach ... Read More
A 28-year-old female asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Soap and water: Soap and water can decrease the burden. Good luck.
A 18-year-old male asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Muscles: Swallowing is a complex coordination of numerous muscles in the mouth, throat and esophagus.
A 35-year-old female asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Need to see your doc: Feeling poorly for 2+ months needs to be evaluated by your doctor. This will likely require a history, examination, and lab testing at a minimum.
A 31-year-old male asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Must see your doctor: Blood in your stool with abdominal pain may be from many things. Some of which could be very serious. You must discuss this with your doctor to deter... Read More
A 21-year-old female asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Viral illness: Sounds most like an acute viral illness. If lasts longer than a few days you need to see your doctor.
A 28-year-old female asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Not enough info: Hiatal hernia and colonic fatty tumors called lipomas are common findings in healthy people. It would be uncommon for these to be the cause of your w... Read More
A 53-year-old female asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Prevacid (lansoprazole): Prevacid (lansoprazole).
A 18-year-old female asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Not much: Acute diarrhea will run its course. Chronic diarrhea will need an evaluation by your doctor to treat the symptoms and identify the cause.
A 23-year-old female asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Should pass: This should pass with no problem. See your doctor if you develop pain or bleeding.
A 19-year-old female asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Possibly....: There are esophageal conditions that are irritated by endoscopy such as eosinophilic esophagitis. Alternatively, this could be abnormal and potential ... Read More
A 31-year-old member asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Common: It's a common finding during endoscopy. Medication, bacteria, alcohol are known causes. This is not a cause of much concern and may be normal for y... Read More
A 24-year-old male asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Normal: Acute diarrhea followed by constipation is not unusual. After getting back to a normal diet and fluid intake you should get back to normal within a we... Read More
A 34-year-old female asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Food has calories: If you eat more calories (of any food type) than your body burns causes the food to be stored as fat. Reducing calorie intake and/or burn more calori... Read More
A 29-year-old male asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Should be fine: Vast majority of people with liver cysts require no treatment. These typically do not grow and therefore should not impact your health down the road.... Read More
A 33-year-old female asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
No: A twisted colon, called a volvulus, is not related to sexual trauma.
A 59-year-old male asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Be good: It is important to avoid other injury to your liver if you have hepatitis c. I recommend complete alcohol and marijuana avoidance. Avoid medications t... Read More
A 43-year-old male asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Very rarely, yes: It is very uncommon but there are certain types of stomach inflammation that are potentially pre-cancerous.
A 57-year-old male asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Easily can be done: Colonoscopy can usually be achieved with no sedation if the patient is willing and motivated. Talk to your doctor to see if this is a good option for... Read More
A 37-year-old male asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Gastritis: The ct result sounds like gastritis as well and is reassuring against cancer.
A 55-year-old female asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Weight loss: Weight loss and avoidance of alcohol can help your liver. It would be unusual to have this be a source of pain except in rare cases where the lining ... Read More
A 31-year-old female asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Pain is not normal : Being able to feel stool pass through your digestive tract is not a problem. This should not be painful however and is therefore abnormal.
A female asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Bloat: Fiber supplements can cause abdominal bloat symptoms. Might try a different brand.
A 37-year-old member asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
See a dentist: The filling will pass through your system without difficulty. Your tooth on the other hand needs to be re-filled soon to prevent problems.
A 58-year-old female asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Not enough info : Liver transplant patients are unique and can get common and uncommon causes of abdominal pain. You need to discuss this with your gastroenterologist o... Read More
A 58-year-old female asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Weight : Weight loss and new onset of constipation are possibly the result of dietary changes, however excluding problems in your colon is important. If you ha... Read More
A 28-year-old female asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Cannot : Cannot say if you have a serious underlying condition or not. Having the gallbladder removed can cause diarrhea and is easily treated with medication.... Read More
A 21-year-old female asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Aspirin : Aspirin can cause stomach ulcers, even if taken with food. Nausea and stomach pain are symptoms that can be associated with ulcers.
A 18-year-old female asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Absolutely: Can be tricky sometimes to figure out what the underlying issue actually is. Loose and frequent stools can be a sign of both diarrhea and constipatio... Read More
A 23-year-old male asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Ulcer: Ulcer, stomach inflammation, reflux, small bowel problems, slow stomach emptying, over active sensory nerves are possibilities. An upper endoscopy ma... Read More
A 26-year-old male asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Medications: Parasites in the digestive tract require prescription medications to treat in the United States. The specific medication is determined by the type o... Read More
A 23-year-old male asked:
Dr. Jeffrey Duman
Gastroenterology 21 years experience
Ulcer: Ulcer, stomach inflammation, reflux, small bowel problems, slow stomach emptying, over active sensory nerves are possibilities. An upper endoscopy ma... Read More

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Testimonials
Recommendations and Thank you notes are endorsements given from patients or other doctors.

12
Recommendations
60
Thank you notes
Dr. Mark Schiele
Nov 27, 2012
I endorse this doctor. I would endorse him twice if I could.
Dec 2, 2012
I endorse this doctor.
Nov 27, 2012
HealthTap member
Doc agreed to unsedated but before test insisted on it! no exam (FAP)
HealthTap member
That's a great answer. I found out in 2001 that I have hepatitus c,
HealthTap member
ks for your quick reply !plz dr. Write madicen hepatitis c

Education & Training

Medical/Graduate school

University of Texas, Health Science Center at Houston
Graduated 2005MD

Medical/Graduate school

University of Texas System, Austin
Graduated 2001MD

Residency

UNIVERSITY OF COLORADO HOSPITAL ANSCHUTZ INPATIENT

Awards

Symposium Competition -First Place Poster, Rocky Mountain Hospital Medicine
Alpha Omega Alpha, University of Texas Medical School
Top Gastroenterologist , First Place, Oregon - Winter
2013

Affiliations

American College of Gastroenterology
American Association for the Study of Liver Diseases
American Gastroenterological Association

Publications

Hepatitis C virus-infected women have a higher risk of advanced fibrosis and graft loss after liver transplantation than men.
he Yield and Economic Impact of Bidirectional Endoscopy for Evaluation of Occult Blood-Positive Stools in an Open-Access, Safety-Net Healthcare Popula...
Osteoporosis Risk Factors after Liver Transplantation
90,000 U.S. doctors in 147 specialties are here to answer your questions, provide medical advice, write prescriptions, and more.
Answer emailed
in 24 hours or less