421 School St., Suite 110, Tomball, TX 77375

(281) 357-1977

Mon to Thu: 8AM – 5PM   Fri: 8AM – 4PM

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We Treat All Symptoms And Illnesses Of The

Gastrointestinal Tract, Liver, And Pancreas.

We proudly serve patients throughout Tomball, TX, including Hufsmith, Hunterwood, Springwood, Tomball Hills, Tomball Park, and the surrounding communities, providing compassionate, high-quality gastroenterology care.

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Call (281) 357-1977
Welcome To Gastroenterology Diagnostic Center

Top Rated Gastroenterologists in the Tomball and North Houston Areas

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.

Top Rated Gastroenterologists in the Tomball and North Houston Areas

Conditions We Treat

Gastroenterology Diagnostic Center (GDC) offers comprehensive services to meet your gastrointestinal care needs and help you maintain a healthy lifestyle.

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View All Conditions

Gastroesophageal 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.

Abdominal Pain Syndrome

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.

Hemorrhoids and 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.

Gallstone Disease

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.
Treatments & Procedures

Gastroenterology Diagnostic Center (GDC) is a gastroenterology clinic specializing in the prevention, diagnosis, and treatment of gastrointestinal and liver diseases using

Treatments And Procedures
Our Providers

Houston’s Top Board-Certified Gastroenterologists

Gastroenterology Diagnostic Center (GDC) has Texas’ most reputable group of gastroenterology specialists. We are proud to serve individuals in Texas and beyond, and our board-certified providers and other staff members are skilled in helping you and your family reach optimal GI health. We aim to make it easy for you to get the care you need. We offer personalized care, tailored to your specific needs and concerns.

Dr. Shabbir Jamali

MD

His dedication to his patients is reflected in the pride he takes in his gastroenterology medical practice at GDC where he has practiced for over two decades.

Meet Dr. Jamali

Dr. Ali Hashmi

MD

He completed his Internal Medicine Residency and Gastroenterology Fellowship from Baylor College of Medicine. In 2021, Dr. Hashmi moved to Houston, Texas, and…

Meet Dr. Hashmi

Dr. Taher Jamali

MD

Taher Jamali, MD is a board-certified gastroenterologist specializing in digestive health, liver disease, and advanced endoscopic procedures.

Meet Dr. Taher Jamali

Excellent service and staff. Little to no wait times, courteous & helpful front desk, and Dr Hashmi was thorough and explained everything clearly. I like that the portal is user friendly and notes are quickly available for my review. I’ve been to this office 3 times now, and my appointment was actually at the time it was scheduled each time. The efficiency and customer service here are almost unbelievable! I would give more stars if I could!

Rebecca Vela

The front desk staff was welcoming and efficient! Check in process was quick and simple. I was early for my appt but was promptly called in to be seen. Dr Jamali was very professional as well as his staff members. I do not hesitate to recommend him and his office !

Jocelyn Sia

I love Dr. Jamali and his staff. He's a very proactive doctor but he doesn’t go overboard. He explains things where I can understand what's going on with my body. I'd highly recommend him!

Teresa DuBose

Dr Jamali is always so thorough, listens to my concerns, and gives sound advice. Julie is amazing; she is the best in getting my infusions started. She's also friendly and always makes me feel comfortable. Tori (sp) is caring and she always lends a compassionate ear.

Kelly Brown

Dr Jamali was very kind and empathetic to my issue. Still unsure of what’s causing but feel like he’s trying to figure it out. Only issue is the long wait for my first appointment and have to wait again almost 3 weeks for a procedure. But I believe he will figure it out!

Kelly Encalade

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4 key Steps To

Patient Journey

Patient journey process involves mapping out the steps a patient takes from the initial contact with the clinic to follow-up care after treatment. This process ensures that patients receive comprehensive care and support at every stage.
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Frequently Asked Questions

Here, we address common questions to help you understand our services, procedures, and patient care. Whether you’re seeking information about appointments, treatments, or aftercare, our FAQs are designed to provide you with clear and helpful answers.

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Frequently Asked Questions
What conditions do you treat?
We treat conditions like GERD, IBS, Crohn’s disease, ulcerative colitis, liver diseases, and more.
What are the timings to visit the clinic?
Our clinic hours are:

Monday to Thursday: 9:00 AM – 5:00 PM
Friday: 9:00 AM – 4:00 PM

How do I schedule an appointment?
Call our clinic at (281) 357-1977 or click here to book an appointment.
What should I bring to my first appointment?
Please bring your drivers license or photo id, insurance card , any pertinent medical records and medication list.
What types of diagnostic tests do you offer?
We offer endoscopy including colonoscopy and egd, blood tests, ultrasound, fibroscan, anorectal manometry and other state of the art diagnostic testing.
What treatment options are available?
Treatment options for digestive disorders vary depending on the specific condition. Our gastroenterologists will develop a personalized treatment plan based on your diagnosis.

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