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Exceptional care, without exception.

About Us

Pioneer GI Clinic provides exceptional care without exception for adults in and around Anchorage, Alaska. The board-certified gastroenterologists are experts in digestive and liver disease management.

The friendly office personnel answer every phone call, and the registered nurse on staff is available for nursing care and patient education.

The experienced physicians offer on-site testing services to diagnose unexplained abdominal pain, constipation, and diarrhea.

They use advanced technologies like upper endoscopy, endoscopic retrograde cholangiopancreatography (ERCP), and capsule endoscopy to confirm conditions like Crohn’s disease, diverticulitis, ulcerative colitis, and irritable bowel syndrome.

Treatment plans are customized to manage gastrointestinal (GI) disorders and preserve a patient’s long-term GI health. The physicians take a multidisciplinary approach to care, educating patients about their best options, such as with medications, lifestyle changes, and dietary improvements.

Pioneer GI Clinic also provides Bravo™ pH monitoring services to evaluate symptoms of acid reflux and gastrointestinal reflux disease (GERD). The providers use medications and other therapies to treat symptoms of these diseases and prevent complications like Barrett’s esophagus.

Blood testing is offered in-office to check for hepatitis and other liver diseases, pancreatitis, and celiac disease. The physicians also specialize in physical and rectal exams to identify hemorrhoids.

Preventive services are featured on-site to lower risk factors for gastrointestinal cancers, like esophageal cancer, pancreatic cancer, and colon cancer. The providers offer colonoscopy and other colon cancer screening services to identify cancer in its earliest stages.

If you need diagnostic testing for GI symptoms or screenings for colon cancer and other preventable diseases, call Pioneer GI Clinic today, or book an appointment online.

Choose Your Provider


Words from our patients

  • Google

    "Dr Pabby always takes the time to explain things to me and answer as many questions as I have. He definitely knows his craft and his bedside manner is second to none."

    Rick R.
  • Google

    "Dr villa was very informally and he was wanting to get the job done correct I appreciate his helpfulness his personality and the things he's going to do for me"

    Darrell S.
  • Google

    "Dr Ordonez is simply great, I have worked in healthcare for over 15 years and he is one of the most thoughtful and caring physicians I have met."

    Mike V.
  • Google

    "Dr. Pabby always listens to my concerns, explains things well, and shows care and compassion. Good GI doctor"

    Suzanne L.
  • Google

    "Outstanding visit. Dr. Guillen is so personable. Made me feel very comfortable. I will definitely refer friends and family to him."

    Billy H.


Pioneer GI Clinic
1200 Airport Heights Dr, Building E, Suite 210
Anchorage, AK 99508
Phone: 907-562-6001
Fax: 907-562-6002

Office Hours

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