Expert Digestive Care in Greater Houston

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Find the Digestive
Care You Need

Gastroenterology & Digestive Care

Accepting New Patients. Insurance Accepted

Meet Dr. Muhammad Ali Khan

Board-certified gastroenterologist & hepatologist

COMPLETE CARE FOR A HEALTHIER YOU

Comprehensive Gastroenterology & Digestive Care

A gastroenterologist, also called a digestive disease specialist, is a physician who specializes in the digestive tract and liver: the esophagus, stomach, small intestine, colon, rectum, pancreas, gallbladder and liver. At United Gastroenterology Associates, Dr. Khan evaluates new symptoms, manages long-term digestive conditions and performs diagnostic and screening procedures for adults in Katy, Cypress and west and northwest Houston.

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GI doctor reviewing results with a patient in Katy, TX

Diagnostic & Therapeutic Procedures

Colonoscopy, upper endoscopy (EGD), capsule endoscopy, FibroScan and other tests to find the cause of symptoms and guide treatment.

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Gastroenterologist explaining digestive health to a patient in Katy, TX

Digestive Symptoms & Conditions

Evaluation of abdominal pain, heartburn, bloating, bowel changes and rectal bleeding, with a clear plan for testing and treatment.

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Gastroenterologist consultation at the Katy, TX office

Chronic GI Conditions

Ongoing care for IBS, Crohn’s disease, ulcerative colitis, celiac disease and other long-term digestive disorders.

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GI doctor reviewing results with a patient in Cypress, TX

Liver Care (Hepatology)

Liver health care for fatty liver disease, abnormal liver enzymes and other liver conditions.

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Dr. Muhammad Ali Khan, MD, board-certified gastroenterologist and hepatologist

MEET YOUR GASTROENTEROLOGIST

Meet Muhammad Ali Khan, MD, FACP, FASGE

Board-Certified Gastroenterologist & Hepatologist

CREDENTIALS AT A GLANCE

Board-Certified

Gastroenterology, hepatology, and internal medicine

Academic Medicine

Former Associate Professor, UT MD Anderson Cancer Center

Published Research

More than 100 peer-reviewed articles in gastroenterology

FACP and FASGE

Fellow, American College of Physicians and American Society for Gastrointestinal Endoscopy

Dr. Muhammad Ali Khan is board-certified in gastroenterology, hepatology and internal medicine and sees patients at both United Gastroenterology Associates offices. He earned his medical degree at Dow Medical College, completed an internal medicine residency at the University of Toledo and completed a gastroenterology and hepatology fellowship at the University of Tennessee Health Science Center.

Dr. Khan has served as an Assistant Professor at the University of Alabama at Birmingham and as an Associate Professor at The University of Texas MD Anderson Cancer Center. He has authored more than 100 peer-reviewed articles and is a Fellow of the American College of Physicians (FACP) and the American Society for Gastrointestinal Endoscopy (FASGE). Read Dr. Khan’s full profile

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SYMPTOM GUIDE

What Digestive Symptoms Are You Experiencing?

Digestive symptoms that keep coming back, get worse or disrupt daily life deserve a medical evaluation. Choose a symptom to learn about common causes and how a gastroenterologist evaluates it.

Abdominal or Stomach Pain

Pain that keeps returning, wakes you at night or comes with fever, vomiting or weight loss.

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Acid Reflux & Heartburn

Burning in the chest or throat more than twice a week, or heartburn that continues despite medication.

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Bloating & Gas

Persistent bloating, fullness or gas that does not improve with simple diet changes.

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Constipation

Hard or infrequent stools lasting several weeks, or constipation with pain or bleeding.

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Diarrhea

Loose stools lasting more than a few weeks, or diarrhea with blood, fever or weight loss.

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Blood in Stool or Rectal Bleeding

Red blood on the tissue or in the toilet, or black, tarry stools.

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Changes in Bowel Habits

A lasting change in how often you go, stool shape or urgency, especially after age 45.

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Nausea & Vomiting

Nausea or vomiting that keeps returning or makes it hard to eat or keep fluids down.

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PROCEDURES & PREVENTIVE CARE

GI Procedures & Preventive Care

Endoscopic procedures let Dr. Khan see the digestive tract directly, take biopsies and, in many cases, treat problems such as polyps during the same exam.

Colonoscopy

A thin, flexible camera examines the colon and rectum to screen for colorectal cancer, remove polyps and investigate bleeding or bowel changes. Sedation keeps you comfortable.

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Upper Endoscopy (EGD)

Examines the esophagus, stomach and first part of the small intestine to evaluate reflux, swallowing problems, ulcers, bleeding or H. pylori, with biopsies when needed.

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Colorectal Cancer Screening

Screening options include colonoscopy and stool-based tests. Dr. Khan helps you choose a test based on your age, personal history and family history.

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All Treatments & Procedures →

COLORECTAL CANCER SCREENING

Is It Time to Discuss Colorectal Cancer Screening?

The U.S. Preventive Services Task Force recommends colorectal cancer screening for adults ages 45 to 75 who are at average risk. People with a family history of colorectal cancer or advanced polyps, inflammatory bowel disease or certain inherited syndromes may need to start earlier or be screened more often. Symptoms such as rectal bleeding call for a diagnostic evaluation rather than routine screening.

Learn About Screening Options
What happens during an upper endoscopy (EGD) procedure

WHY PATIENTS CHOOSE US

Experience the United
Gastroenterology Difference

Compassionate, Board-Certified Care You Can Trust.
Accepting New Patients. Most insurance accepted.

Academic

& Research Expertise

100+

Peer-Reviewed Articles

Personalized

Treatment Plans

2 Offices

Katy & Cypress

When Should You See a Gastroenterologist?

See a gastroenterologist when digestive symptoms last longer than a few weeks, keep returning, get worse or come with warning signs such as bleeding, unexplained weight loss or trouble swallowing. Adults should also discuss colorectal cancer screening starting at age 45, or earlier with a family history or other risk factors.

Many insurance plans let you book directly with a specialist, while some HMO plans require a referral from your primary care physician.

When to seek emergency care

Call 911 or go to the nearest emergency room for severe or sudden abdominal pain, vomiting blood, heavy rectal bleeding, black or tarry stools with dizziness or fainting, or chest pain.

Make an appointment if you have:

  • Heartburn or reflux more than twice a week, or despite medication
  • Abdominal pain, bloating or nausea that keeps coming back
  • Diarrhea or constipation lasting more than a few weeks
  • Blood in your stool or rectal bleeding
  • Difficulty or pain when swallowing
  • Unexplained weight loss, fatigue or iron-deficiency anemia
  • Abnormal liver tests or fatty liver seen on imaging
  • A family history of colorectal cancer or polyps

Not sure which visit you need? Call (346) 340-4414 and the office can help.

Insurance & New Patient Information

United Gastroenterology Associates is accepting new patients and accepts most major insurance plans, including the carriers shown here. The office verifies your benefits before your visit, and self-pay options are available. For your first appointment, bring a photo ID, your insurance card, a list of your medications, any referral your plan requires and recent lab, imaging or procedure reports.

A carrier logo does not guarantee coverage for a specific plan or service. Call (346) 340-4414 to confirm your benefits.

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PATIENT TESTIMONIALS

What Our Patients Are Saying

★★★★★
5.0-star rated digestive disease specialist with 270+ Google patient reviews
Cypress office · Read Cypress reviews →
★★★★★
Top-rated in Katy · 5.0 stars on Google from 50+ patients
Katy office · Read Katy reviews →

“

Dr. Khan is an amazing physician. He is so kind hearted & wants to help you in every way possible. He listens & doesn’t make you feel rushed.

Donna L.

Cypress

“

Dr. Khan is an exceptionally kind and compassionate physician. He truly listens to his patients and takes the time to explain everything clearly and thoroughly.

Maria B.

Katy

“

He is thorough, kind, listens and puts you at ease. The staff are patient and very helpful. Dr Kahn is excellent, I trust him completely.

Steph A.

Fulshear

Frequently Asked Questions

What does a gastroenterologist do?

A gastroenterologist is a doctor who specializes in the digestive system and liver. Gastroenterologists diagnose and treat conditions such as acid reflux, IBS, inflammatory bowel disease and liver disease, and perform procedures such as colonoscopy and upper endoscopy to examine the digestive tract, take biopsies and remove polyps.

Where are your gastroenterology offices in Katy and Cypress?

The Katy office is at 23920 Katy Freeway, Suite 555, Katy, TX 77494. The Cypress office is at 21216 Northwest Freeway, Suite 640, Cypress, TX 77429. Both offices are open Monday through Friday and can be reached at (346) 340-4414.

Do I need a referral to see a gastroenterologist?

Many insurance plans let you schedule directly with a specialist. Some plans, including many HMO plans, require a referral from your primary care physician. The office can help you check your plan’s requirements when you call to schedule.

At what age should I start colorectal cancer screening?

The U.S. Preventive Services Task Force recommends screening for adults at average risk from age 45 through 75. You may need to start earlier or be screened more often if you have a family history of colorectal cancer, a history of polyps or inflammatory bowel disease.

What is the difference between a colonoscopy and an upper endoscopy?

A colonoscopy examines the colon and rectum and is used for colorectal cancer screening and to evaluate bleeding or bowel changes. An upper endoscopy (EGD) examines the esophagus, stomach and duodenum and is used to evaluate reflux, swallowing problems, ulcers and upper abdominal pain.

Do you accept my insurance?

United Gastroenterology Associates accepts most major insurance plans, and self-pay options are available. Coverage depends on your specific plan, so the office verifies your benefits before your appointment.

Is Dr. Khan accepting new patients, and how do I book?

Yes. Dr. Muhammad Ali Khan is accepting new patients at both offices. To book at the Katy office (23920 Katy Freeway, Suite 555), call (346) 340-4414 or request an appointment online and choose Katy. For the Cypress office (21216 Northwest Freeway, Suite 640), choose Cypress.

YOUR DIGESTIVE HEALTH MATTERS

It’s time to take control of your digestive health.
Feel better. Live better.

Looking for a trusted gastroenterologist in Katy or GI specialist in Cypress? Schedule a consultation with our board-certified gastroenterology team at United Gastroenterology Associates. We are accepting new patients and proudly serving Greater Houston, Fulshear, Richmond, Rosenberg, Sealy and surrounding communities. Call (346) 340-4414 or request an appointment online today.

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