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CMG Careers

2510 NW Edenbower Blvd, Ste 112

  Roseburg, Oregon  97471


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Patient Portal

Centennial Medical Group is proud to announce a Patient Portal where patients are able to schedule appointments and access their records online.


The Patient Portal helps you manage your healthcare easily and securely.

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Our Services


    The evaluation may include endoscopy testing, Labs, and imaging focused on specific GI complaint and diagnosis for the patient.


    Screening for the general population begins at the age of 50.  Exam visualizes the entire colon.  The goal of testing is to reduce colon cancer risk.


    Evaluation of esophagus, stomach, and beginning of the small intestine.  An Upper Endoscopy can diagnose Barrett's esophagus, gastric ulcers, celiac disease and H Pylori.


    This includes routine laboratory testing and for some patients imaging of the liver every 6 months.  Documenting and monitoring health of the liver is of utmost importance as it is a vital organ.


    This Diagnosis is made by blood testing.

Centennial Gastroenterology Associates is committed to providing excellent evidence-based medical care in a compassionate manner.


We are dedicated to listening to our patients, helping them understand their medical conditions and empowering them to make sound decisions regarding their own health.


The Gastroenterologists and their staff are committed to serving all patients with dignity and respect.

Meet Our Providers

Vikas Garg, M.D. is a gastroenterologist and is board certified by the American Board of Internal Medicine.  Read More

Sorin Petre, M.D. is a gastroenterologist and board certified by the American Board of Medicine in Internal Medicine; Gastroenterology and Transplant Hepatology.   Read More

Dempsie Morrison, D.O. is a gastroenterologist and is affiliated with the American Gastroenterological Society, American Osteopathic Association, American College of Physicians, American College of Osteopathic Internists, American College of Gastroenterology and American Neurogastroenterology and Motility Society (ANMS).   Read More

FYI - Things To Know

Patient Surveys by Health Stream

Let Us Know and See How We're Doing  Learn More

Screening saves lives - New Info

The ColoRectalC ancer  (CRC) screening tests are now grouped into cancer prevention

tests and cancer detection tests.

Colonoscopy  beginning at age 50, remains the preferred CRC screening strategy.  Learn more here -