Houston Gastroenterologist
Board-Certified Gastroenterologist in Houston for Complete Digestive & Liver Care
At United Gastroenterology Associates, we are committed to delivering trusted digestive care for the whole family through compassionate, patient-centered treatment and advanced medical expertise. Led by Dr. Muhammad Ali Khan, MD, FACP, FASGE, our board-certified gastroenterologist combines years of clinical experience with the latest diagnostic technology to provide accurate diagnoses, personalized treatment plans, and long-term digestive health solutions. Whether you need preventive care, evaluation of persistent digestive symptoms, or specialized treatment for complex gastrointestinal or liver conditions, our team is dedicated to helping you feel better and live healthier. As a leading gastroenterology practice serving Katy, Cypress, and the Greater Houston area, we offer advanced GI procedures, including colonoscopy, upper endoscopy (EGD), capsule endoscopy, FibroScan®, ERCP, and comprehensive digestive evaluations—all under one roof.

We proudly accept most major insurance plans and provide high-quality, evidence-based care for patients experiencing abdominal pain, acid reflux (GERD), IBS, constipation, diarrhea, bloating, blood in the stool, hemorrhoids, difficulty swallowing, liver disease, fatty liver disease, pancreatitis, gallbladder disorders, and other digestive conditions. Our goal is simple: to identify the root cause of your symptoms, provide effective treatment, and support your long-term digestive wellness.
Board-Certified Gastroenterologist
Advanced expertise in digestive and liver diseases.
Advanced GI Procedures
Comprehensive diagnostics and treatment under one roof.
Most Major Insurance Plans Accepted
Quality digestive care that's accessible and affordable.
Trusted Digestive Care for the Whole Family
Compassionate, personalized care for every stage of life.
Common Gastritis Symptoms
Upper stomach pain, burning stomach pain, sour stomach, nausea, bloating after eating, indigestion, feeling full quickly, and loss of appetite are common signs of gastritis.
What Causes Gastritis?
Common causes include H. pylori infection, frequent NSAID pain relievers, alcohol, bile reflux, and autoimmune gastritis, among other digestive conditions.
When to See a GI Doctor
See a gastroenterologist if symptoms are persistent, worsening, or not improving, or if you have a history of ulcers or H. pylori or long-term NSAID use with stomach pain. Need Consultation!
Board-Certified Gastroenterology Excellence
Gastroenterologist in Greater Houston
Dr. Muhammad Ali Khan, MD, FACP, FASGE

At the heart of our practice is Dr. Muhammad Ali Khan, a highly respected, board-certified gastroenterologist and hepatologist with extensive experience in diagnosing and treating diseases of the digestive system and liver.
Dr. Khan earned his medical degree from Dow Medical College, completed his Internal Medicine residency at the University of Toledo, and went on to complete advanced fellowship training in Gastroenterology and Hepatology at the University of Tennessee.
Throughout his distinguished career, Dr. Khan has combined outstanding clinical care with academic excellence. He previously served as an Associate Professor at MD Anderson Cancer Center, where he participated in the care of patients with complex gastrointestinal conditions and gastrointestinal cancers while contributing to medical education and research.
Dr. Khan has authored more than 100 peer-reviewed scientific publications and has presented research at national and international medical conferences. His work has contributed to clinical practice guidelines and continues to influence the field of gastroenterology.
As a Fellow of both the American College of Physicians (FACP) and the American Society for Gastrointestinal Endoscopy (FASGE), Dr. Khan remains committed to delivering evidence-based, patient-focused care using the latest advancements in digestive medicine.
. He is an active member of several professional organizations, including the American College of Gastroenterology and the Texas Medical Association. Learn more..
Digestive Care in Cypress
Why Choose United Gastroenterology in Cypress?
Choosing the right gastroenterologist is one of the most important decisions you can make for your digestive health. Digestive symptoms often have multiple possible causes, and successful treatment begins with an accurate diagnosis and a physician who takes the time to understand your medical history, symptoms, lifestyle, and long-term health goals.
If you're searching for an experienced gastroenterologist in Cypress, TX, you deserve more than symptom relief—you deserve an accurate diagnosis, personalized treatment, and a long-term partner in your digestive health. At United Gastroenterology, we focus on treating the whole patient—not just the condition. We believe every patient deserves clear communication, timely appointments, thorough evaluations, and treatment recommendations based on the latest medical research.
Patients choose our practice because we offer:
- Board-certified expertise in Gastroenterology and Hepatology
- Comprehensive care for digestive and liver diseases
- Advanced diagnostic procedures performed with modern technology
- Colonoscopy and endoscopy services in one convenient location
- Personalized treatment plans based on current medical guidelines
- Colon cancer screening and prevention
- Expertise in GERD, IBS, IBD, liver disease, hemorrhoids, constipation, diarrhea, abdominal pain, and digestive disorders
- Convenient location in Houston with easy access from Interstate 10
- Most major insurance plans accepted
- Affordable self-pay options for eligible patients
- Compassionate, patient-centered care focused on long-term digestive wellness
Rather than treating symptoms alone, we work to identify the underlying cause of digestive problems so patients receive the most effective treatment possible.
Feel Better, Live Better
Digestive Symptoms You Should Never Ignore
Many digestive disorders begin with mild or intermittent symptoms that patients assume will improve on their own. While occasional digestive discomfort is common, persistent or recurring symptoms should never be ignored. Early diagnosis can often prevent complications, improve treatment outcomes, and provide peace of mind.
Schedule an appointment with our Cypress gastroenterology team if you experience:
- Persistent abdominal pain or stomach discomfort
- Frequent heartburn or acid reflux
- Difficulty swallowing
- Bloating or excessive gas
- Chronic constipation
- Ongoing diarrhea
- Blood in your stool or rectal bleeding
- Black or tarry stools
- Nausea or vomiting
- Unexplained weight loss
- Loss of appetite
- Fatigue associated with digestive symptoms
- Changes in bowel habits lasting more than two weeks
These symptoms may be associated with conditions such as GERD, gastritis, peptic ulcers, irritable bowel syndrome, inflammatory bowel disease, hemorrhoids, colon polyps, colorectal cancer, gallbladder disease, pancreatitis, fatty liver disease, or other gastrointestinal disorders.
Rather than relying on over-the-counter medications to temporarily relieve symptoms, our goal is to determine why those symptoms are occurring and develop a treatment plan that addresses the underlying condition.
How Gastritis Is Diagnosed
- Medical history and exam: review of symptoms, pain pattern, medications, and risk factors.
- H. pylori testing: breath, stool, blood, or biopsy-based testing.
- Blood and stool tests: to check for anemia, inflammation, or blood in the stool.
- Upper endoscopy (EGD): to view the stomach lining and take biopsies when needed.
Do You Need an Endoscopy for Gastritis?
Not everyone with stomach burning needs an endoscopy. An upper endoscopy (EGD) may be recommended when symptoms are persistent, severe, recurring, or linked to warning signs such as bleeding, weight loss, vomiting, or difficulty swallowing.
Gastritis Treatment Options
Acid-reducing medications such as PPIs or H2 blockers
H. pylori treatment with antibiotics when present
Medication review for NSAID-related irritation
Diet and lifestyle guidance
Follow-up testing to confirm healing
Upper endoscopy when appropriate
Related Conditions We Evaluate
Gastritis symptoms can overlap with GERD and acid reflux, peptic ulcer disease, H. pylori infection, functional dyspepsia, gallbladder disease, IBS, bile reflux, and esophagitis. Correct diagnosis matters because treatment for gastritis may differ from these conditions.
Get Help for Gastritis & Stomach Inflammation
GERD & Acid Reflux Treatment in Cypress
Live better. Book your appointment today.
Heartburn is common, but frequent acid reflux is not normal. If you experience heartburn more than twice a week, wake up coughing at night, have difficulty swallowing, or rely on antacids every day, you may have Gastroesophageal Reflux Disease (GERD).
Without treatment, chronic GERD can lead to:
- Esophagitis
- Barrett's Esophagus
- Esophageal ulcers
- Esophageal strictures
- Increased risk of esophageal cancer
Common GERD Symptoms
- Burning sensation in the chest
- Acid coming into the throat
- Chronic cough
- Hoarseness
- Sore throat
- Difficulty swallowing
- Chest discomfort
- Bad breath
- Excessive burping
At United Gastroenterology, we perform comprehensive evaluations using upper endoscopy and other diagnostic tools to determine the cause of reflux symptoms. Treatment may include lifestyle modifications, dietary counseling, medication management, and advanced endoscopic therapies when appropriate.
If you are looking for acid reflux treatment in Cypress, GERD specialist, or heartburn doctor near you, we provide personalized care focused on long-term relief.

Acute Gastritis
Sudden stomach inflammation, often from infection, medications, alcohol, or illness.

Chronic Gastritis
Inflammation that develops slowly or keeps returning over time.

H. pylori Gastritis
Gastritis caused by Helicobacter pylori bacteria infecting the stomach lining.

Reactive & Autoimmune Gastritis
Irritation from NSAIDs, alcohol, or bile reflux, or an immune attack on the lining.
Expert Care. Lasting Relief.
Comprehensive Diagnosis & Treatment in Greater Houston for Digestive and Liver Conditions
At United Gastroenterology Associates, we provide comprehensive evaluation and treatment for a wide range of digestive and liver conditions affecting the esophagus, stomach, intestines, colon, rectum, liver, pancreas, and gallbladder. Our board-certified gastroenterologist specializes in diagnosing and managing Irritable Bowel Syndrome (IBS), Inflammatory Bowel Disease (Crohn's disease and Ulcerative Colitis), GERD, chronic abdominal pain, constipation, diarrhea, bloating, excessive gas, hemorrhoids, rectal bleeding, blood in the stool, liver disease, fatty liver disease, pancreatitis, and gallbladder disorders. Using advanced diagnostic testing, including colonoscopy, endoscopy, FibroScan®, laboratory studies, and imaging, we identify the underlying cause of your symptoms and develop personalized treatment plans designed for long-term digestive health.
Whether you are experiencing persistent stomach pain, frequent heartburn, changes in bowel habits, rectal bleeding, unexplained weight loss, or chronic digestive discomfort, our experienced gastroenterology team is committed to providing accurate diagnosis, evidence-based treatment, and compassionate care. From preventive colon cancer screening and hemorrhoid evaluation to advanced liver care and pancreatic disease management, we offer comprehensive digestive healthcare under one roof, helping patients throughout Katy, Cypress, and the Greater Houston area achieve lasting relief and improved quality of life.
Know the Warning Signs
Common Gastritis & Stomach Inflammation Symptoms
Gastritis symptoms can feel different from person to person. Some patients describe burning; others feel pressure, nausea, fullness, or pain after meals. NIDDK lists symptoms that may include upper abdominal pain or discomfort, nausea, vomiting, feeling full too soon, feeling too full after a meal, loss of appetite, and weight loss.
You may need a GI evaluation if you have:
- Upper stomach pain
- Burning stomach pain
- Sour stomach
- Nausea or vomiting
- Bloating after eating
- Indigestion
- Stomach discomfort after meals
- Feeling full quickly
- Loss of appetite
- Unexplained weight loss
- Recurrent stomach irritation
- Pain that improves or worsens with eating
- Symptoms that return after stopping antacids
- History of ulcers or H. pylori
- Black stool or vomiting blood
Important: black or tarry stool, red or maroon blood in stool, vomiting blood, coffee-ground-like vomit, severe weakness, shortness of breath, fainting, or severe abdominal pain may be signs of bleeding or another urgent problem. Seek emergency care immediately.
Finding the Cause. Treating the Problem.
Advanced Gastroenterology Procedures in Houston
At United Gastroenterology Associates, we believe that accurate diagnosis is the foundation of successful treatment. Many digestive diseases cannot be diagnosed through symptoms alone. Advanced procedures allow us to examine the digestive tract directly, identify abnormalities at an early stage, and develop personalized treatment plans before conditions become more serious.
Our Cypress gastroenterology clinic is equipped with modern diagnostic technology that helps evaluate disorders involving the esophagus, stomach, small intestine, colon, liver, pancreas, and biliary system. Every procedure is performed with patient comfort, safety, and accuracy as our highest priorities.
Whether you need a routine preventive screening or evaluation of persistent digestive symptoms, our experienced gastroenterology team provides compassionate care using evidence-based medical practices.
Testimonial
Patient Reviews
Our practice is proud to receive consistently positive feedback for compassionate care, thorough evaluations, and excellent patient communication.
★★★★★
"Dr. Khan took the time to explain everything clearly. I never felt rushed and finally understood the cause of my digestive problems."
★★★★★
"My colonoscopy experience was much easier than I expected. The staff made me feel comfortable from beginning to end."
★★★★★
"Professional, caring, and extremely knowledgeable. I highly recommend Dr. Khan for anyone experiencing digestive issues."
★★★★★
"Scheduling was easy, the office was organized, and Dr. Khan answered every one of my questions."
★★★★★
"Excellent experience. I would absolutely recommend United Gastroenterology to family and friends."
Our greatest compliment is the trust our patients place in us by referring their friends and family members for digestive care.
Relief Starts with the Right Diagnosis.
Advanced Colonoscopy, Endoscopy & Diagnostic Procedures
At United Gastroenterology Associates, we provide advanced diagnostic and therapeutic procedures to accurately diagnose, treat, and prevent a wide range of digestive and liver conditions. Our board-certified gastroenterologist performs colonoscopy, upper endoscopy (EGD), capsule endoscopy, FibroScan®, ERCP, flexible sigmoidoscopy, esophageal dilation, anorectal manometry, and esophageal pH monitoring using modern technology and evidence-based techniques. Colonoscopy remains the gold standard for colorectal cancer screening, allowing early detection and removal of precancerous polyps before they become cancerous. We also evaluate patients experiencing abdominal pain, rectal bleeding, blood in the stool, chronic constipation, diarrhea, unexplained weight loss, anemia, acid reflux, difficulty swallowing, and other persistent digestive symptoms. Our goal is to identify the underlying cause of your condition through accurate diagnosis while providing safe, comfortable, outpatient procedures.
Personalized Treatment
Schedule Your Appointment Today
Digestive symptoms should never be ignored. Whether you have persistent heartburn, abdominal pain, bloating, constipation, diarrhea, blood in your stool, liver concerns, or simply need a preventive screening colonoscopy, early evaluation can make a significant difference in your health.
At United Gastroenterology Associates, we are committed to providing compassionate, evidence-based digestive care for patients throughout Cypress and the Greater Houston area.
If you are searching for a gastroenterologist in Cypress, TX, GI doctor near me, colonoscopy specialist, liver specialist, or digestive health expert, our team is ready to help.
Call (346) 340-4414 today to schedule your appointment or request a consultation online. We look forward to partnering with you on your journey toward better digestive health.
Gastritis Questions, Answered
Frequently Asked Questions
What is gastritis?
Gastritis is inflammation or irritation of the stomach lining. It may cause burning upper stomach pain, nausea, bloating, indigestion, early fullness, vomiting, loss of appetite, or discomfort after eating.
Is gastric inflammation the same as gastritis?
Yes. Many patients use the phrase gastric inflammation to describe gastritis. Both refer to inflammation of the stomach lining.
What does gastritis pain feel like?
Gastritis may feel like burning, aching, gnawing, pressure, or discomfort in the upper abdomen. Some patients feel worse after eating, while others feel nausea, sour stomach, bloating, or early fullness.
What causes stomach inflammation?
Common causes include H. pylori infection, frequent NSAID pain reliever use, alcohol irritation, bile reflux, autoimmune gastritis, severe illness, and other digestive conditions.
Can H. pylori cause gastritis?
Yes. H. pylori infection is a common cause of gastritis and may also be linked with ulcers. Testing and treatment may be recommended depending on your symptoms and risk factors.
Do I need an endoscopy for gastritis?
Not always. Some patients can be evaluated with history, exam, and noninvasive testing. An upper endoscopy may be recommended if symptoms are persistent, severe, recurring, or associated with warning signs such as bleeding, weight loss, vomiting, or difficulty swallowing.
Can gastritis go away?
Some cases improve when the cause is treated, such as H. pylori infection, NSAID irritation, or alcohol-related irritation. Chronic or recurring symptoms should be evaluated by a GI specialist.
Is gastritis dangerous?
Many cases are treatable, but untreated or severe gastritis may lead to ulcers, bleeding, anemia, or other complications. Seek urgent care for blood in vomit, black stool, severe pain, fainting, or severe weakness.
Who treats gastritis in Houston, Katy, and Cypress?
A gastroenterologist treats gastritis, stomach inflammation, ulcers, H. pylori, GERD, and other digestive conditions. United Gastroenterology Associates provides GI care from Cypress and Katy locations serving Greater Houston.
How do I schedule an appointment?
Call United Gastroenterology Associates at (346) 340-4414 to schedule an appointment for gastritis, stomach inflammation, burning stomach pain, nausea, or related digestive symptoms.
Conveniently Located Gastroenterology Clinic in Houston
Our Cypress office is conveniently located at 27700 Northwest Freeway, Suite 490, Cypress, TX 77433, providing easy access for patients throughout Cypress and Northwest Houston. Conveniently situated along US-290 (Northwest Freeway) near Mueschke Road and Grand Parkway (Highway 99), our clinic is easily accessible from surrounding communities including Bridgeland, Towne Lake, Fairfield, Coles Crossing, Blackhorse Ranch, Cypress Creek Lakes, Miramesa, Canyon Lakes West, Stone Gate, Copperfield, Jersey Village, Waller, Hockley, Tomball, Bear Creek, Northwest Houston, and nearby Harris County communities.
United Gastroenterology Associates, PLLC | GI and Liver Specialist – Cypress
Whether you're traveling via I-10, Highway 99 (Grand Parkway), FM 1463, Mason Road, Pin Oak Road, Fry Road, or Westheimer Parkway, you'll find our office conveniently located with ample parking and a patient-friendly environment. We are committed to making your visit as convenient and comfortable as possible, from scheduling your appointment to completing your consultation, colonoscopy, endoscopy, or follow-up care. If you need assistance finding our office or have questions before your visit, our friendly team is happy to help. Call (346) 340-4414 to schedule your appointment or receive directions to our Cypress location.



