Specialties and Services 

Dr. Dumois is specially trained in the diagnoses and treatment of diseases involving the digestive system (esophagus, stomach, large intestine/colon, liver, pancreas, and gallbladder).  Dr. Dumois and his partners at Central Florida Gastroenterology provide a broad range of advanced diagnostic and therapeutic procedures and services, working closely with your other physicians to provide the best medical services possible.

Colonoscopy
Colonoscopy is recommended for all adults at age 50 (with average risk) for routine colon cancer screening, whereby a careful examination is performed to discover and remove polyps.  This procedure, which is performed under anesthesia, has many indications, including rectal bleeding, abdominal pain, unexplained diarrhea, family history of colon polyps or colon cancer, among. others.  Dr. Dumois performs colonoscopies at the Central Florida Surgical Center in Ocoee and at the Dr. P. Phillips' Hospital in Southwest Orlando.  

Upper Endoscopy (EGD)
Upper endoscopy is performed to examine the esophagus, stomach and small bowel for abnormalities.  This includes difficulty swallowing, abdominal pain, black stools, ulcer disease, among others.  Dr. Dumois performs colonoscopies at the Central Florida Surgical Center in Ocoee and at the Dr. P. Phillips' Hospital in Southwest Orlando.  

Capsule Endoscopy
After ingesting a capsule the size of a large vitamin, pictures are taken deep within your small bowel, which would normally be outside the reach of a standard endoscope.  This procedure is performed at the Central Florida Gastroenterology Oakwater office in Orlando.

Endoscopic Retrograde Cholangiopanctreatography (ERCP)
This procedure is performed at the hospital to examine your bile ducts (drainage tubes from the liver/gallbladder) and the pancreas.  Tissue may be biopsied during this examination if needed, and therapeutics may be required depending on your illness, such as the placement of a stent.

Liver Biopsy
This test is performed by interventional radiologists at Health Central Hospital. Under ultrasound guidance, they are able to sample a tiny piece of the liver to assist in the diagnosis of an underlying liver ailment. 

Percutaneous Endoscopic Gastrostomy (PEG) tube placement
This procedure is typically reserved for those who are unable to tolerate oral nutrition due to an underlying illness.  This procedure is performed at the hospital.  

CRH O'Regan Hemorrhoid Treatment
This is a painless, non-surgical hemorrhoid banding treatment performed by our physician assistant.  This procedure is done in the office and takes less than 5 minutes.  There is no preparation necessary, and patients can return to their usual daily activities on the same day.