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  • Monday – Thursday09:00 AM – 05:00 PM
  • Friday09:00 AM – 04:00 PM
  • Saturday – SundayClosed

Welcome to GDC

Diagnostic Center

GDC is the premier gastroenterology practice with board-certified gastroenterologists in the Tomball and North Houston areas where we have been delivering state of the art care for over two decades. Our mission is to render the highest quality digestive health care to our patients in the most cost-effective way possible. While our practice employs the latest advances in gastroenterology procedures and uses every cutting-edge technology available, we still believe in building a compassionate and respectful relationship with each of our patients in the friendly manner of ‘Old Fashioned’ medical arts.

Our facility, located just a few blocks east of the Tomball Regional Hospital, has recently added a state-of-the-art office endoscopy suite.

Gastroenterology Diagnostic Center
In Network Satisfaction

In Network


You will be billed in-network for our endoscopy and pathology services
Continuity Of Care


Of Care

Follow-up appointments are essential to ensure your treatment is progressing as it should
Advance Sedation



We offer the most advanced sedation available for endoscopy procedures
Cost Effective



Utilizing our in-office endoscopy suite saves our patients the high costs associated with using off-site facilities.


Reflux Disease

Gastroesophageal reflux is a physical condition in which acid from the stomach flows backward up into the esophagus. People will experience heartburn symptoms when excessive amounts of acid reflux into the esophagus. Many describe heartburn as a feeling of burning discomfort, localized behind the breastbone, that moves up toward the neck and throat.

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Abdominal Pain


Ordinarily, we are unaware of any of the actions of the organs in the abdomen or any discomfort from activities such as eating, movement of food through the intestines, or bowel movements. Nerves are constantly monitoring activities in the body, and when those messages are transmitted to the brain and come into consciousness.

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Anal Disorder

Hemorrhoids are blood vessels (veins) in the rectum or anal canal. When those blood vessels become swollen or dilated, symptoms may develop. Many people have hemorrhoids but have no symptoms. Hemorrhoids are very common and by age 50, nearly half of Americans have hemorrhoids. Nearly 5% of the US population (15,000,000 people) has sought medical care

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Gallstones are collections of cholesterol, bile pigment or a combination of the two, which can form in the gallbladder or within the bile ducts of the liver. In the United States, the most common type of gallstones is made of cholesterol. Cholesterol stones form due to an imbalance in the production of cholesterol or the secretion of bile.

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Diagnostic Center

Conditions We Treat

comprehensive services

Gastroenterology Diagnostic Center (GDC) offers comprehensive services to meet your gastrointestinal care needs and help you maintain a healthy lifestyle. We treat the following symptoms and diseases but are not limited to

Meet Our


In Gastroenterology
Diagnostic Center (GDC) we have Houston’s Top Board-certified Gastroenterologists.
Dr. Shabbir

Dr. Shabbir



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Avais Chatha




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Dr Ali Hashmi

Dr Ali



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Our Blog

Latest News

4 Worst Foods for Gut Health

What goes in your body has a significant impact on your overall health, so it is always best to watch what you eat. Food affects your gut since it contains a microbiome, which houses trillions of microorganisms. These include bacteria, viruses, and fungi. While some...

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6 Possible Reasons You Are Gassy in the Morning

Are you gassy in the morning? While flatulence is not uncommon, you may be wondering why you are so gassy in the morning. Excessive farts could be an indication that there’s something wrong with your gut health. Gassy foods, aerophagia, dehydration, periods, gut...

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Take The First Step To

Gastro-Intestinal Care

Call Gastroenterology Diagnostic Center in Tomball, TX 77375

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