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United Gastroenterology — Katy Office
Gastroenterologist in Katy, TX for Digestive & Liver Care
In short: United Gastroenterology Associates, PLLC is a gastroenterology practice in Katy, TX, where Dr. Muhammad Ali Khan, MD, FACP, FASGE, sees adults for acid reflux, IBS, abdominal pain, liver conditions and colorectal cancer screening. The Katy office is at 23920 Katy Freeway, Suite 555, Katy, TX 77494, next to Memorial Hermann Katy Hospital, and is open Monday–Friday, 8:30 AM–5:00 PM. Call (346) 340-4414 to request an appointment.
Recurring heartburn, abdominal discomfort, bloating, or changes in bowel habits can leave you unsure about what to do next. At United Gastroenterology Associates, PLLC, Dr. Muhammad Ali Khan provides evaluation and ongoing care for digestive and liver conditions at our Katy office.
Visit us at 23920 Katy Freeway, Suite 555, to discuss your symptoms, review previous test results, or plan colorectal cancer screening. Contact the office to check appointment availability and insurance requirements.
United Gastroenterology Associates – Katy
23920 Katy Freeway, Suite 555, Katy, TX 77494
Digestive and Liver Care
Evaluation of recurring digestive symptoms and ongoing gastrointestinal conditions.
Colonoscopy and Endoscopy Planning
Discuss whether a procedure is appropriate and how to prepare for the next step.
Katy Office Appointments
Office information, directions, and appointment requests in one place.
Insurance and Self-Pay Guidance
Ask about your specific insurance plan and available self-pay arrangements.
“My gastroenterology & hepatology practice is dedicated to working closely with you to develop a personalized treatment plan that meets your unique needs and preferences.”
Dr. Muhammad Ali Khan, MD, FACP, FASGE
Gastroenterologist and hepatologist, United Gastroenterology Associates
Meet Dr. Muhammad Ali Khan
Dr. Muhammad Ali Khan, MD, FACP, FASGE, is a gastroenterologist and hepatologist who sees patients at United Gastroenterology Associates in Katy and Cypress. His areas of care include reflux, bowel disorders, digestive symptoms, liver conditions, and colorectal cancer screening.
He earned his medical degree from Dow Medical College, completed an internal medicine residency at the University of Toledo, and completed fellowship training in gastroenterology and hepatology at the University of Tennessee Health Science Center.
His professional background includes former academic appointments at the University of Alabama at Birmingham and The University of Texas MD Anderson Cancer Center. His full physician profile provides additional information about his training, professional experience, and areas of practice.
Languages: English, Hindi, and Urdu.
Hospital affiliations: Memorial Hermann Katy Hospital and Memorial Hermann Cypress Hospital.
Professional Memberships
- American College of Gastroenterology
- American Society for Gastrointestinal Endoscopy (Fellow)
- American Gastroenterological Association
- American College of Physicians (Fellow)
- Texas Medical Association
- Texas Society of Gastroenterology & Endoscopy
Areas of Care
- Acid reflux, GERD, and gastritis
- Abdominal pain, bloating, and bowel changes
- IBS and inflammatory bowel disease
- Fatty liver and other liver conditions
- Colonoscopy and colorectal cancer screening
- Upper endoscopy (EGD)
Patient Reviews · Katy Office
What Katy Patients Say About Dr. Khan
“I had a great experience with Dr. Khan when I brought my dad in for a colonoscopy. The procedure was quick, smooth, and easier than we expected. Dr. Khan and the team did a great job and made the whole process comfortable and stress-free.”
“I’m very grateful for the excellent care I received from Dr. Muhammad Ali Khan. He was kind, caring, and professional, and took the time to explain everything clearly. He made me feel comfortable and gave me peace of mind.”
“Dr. Khan has been an amazing doctor. He was very helpful, caring, and professional throughout my experience. I would definitely recommend him to my family and friends. The entire staff was also very helpful and welcoming.”
A Clearer Plan for Your Digestive Care
Understanding your symptoms
Your consultation is an opportunity to explain what has changed, when symptoms occur, and how they affect your daily life. Bring questions and relevant information about previous evaluations.
Testing with a purpose
Discuss why a test is being recommended, what it can show, and whether there are alternatives. A consultation does not mean every patient needs an endoscopic procedure.
Treatment and follow-up
Ask how your treatment plan will be reviewed, how you will receive results, and when to arrange follow-up. Let the team know about medicines you take and other clinicians involved in your care.
Practical appointment planning
Before booking, confirm the location, insurance requirements, and any preparation instructions that apply to your visit.
Visit Our Katy Office
United Gastroenterology Associates — Katy
23920 Katy Freeway, Suite 555
Katy, TX 77494
Phone: (346) 340-4414
Office hours: Monday–Friday, 8:30 AM–5:00 PM
Closed for lunch: 12:00–1:30 PM
Last appointment: 4:30 PM
Patients come to this office from Cinco Ranch, Cross Creek Ranch, Fulshear, Firethorne, Elyson, Grand Lakes and the Energy Corridor along I-10. Confirm your appointment before traveling. Check whether your instructions are for an office visit or a procedure at another facility.
Request a Katy Appointment · Get Directions
Digestive and Liver Conditions Evaluated in Katy
Digestive symptoms can have different causes. Dr. Khan evaluates your concerns and medical history to determine which examinations or tests may be appropriate.
GERD and Acid Reflux
Frequent heartburn, regurgitation, or a recurring sour taste can be reasons to discuss reflux with a gastroenterologist. Evaluation and treatment depend on your symptoms and previous care.
Crohn’s Disease and Ulcerative Colitis
Inflammatory bowel disease requires ongoing assessment and management. Discuss current symptoms, previous testing, medicines, and your follow-up needs with the practice.
Rectal Bleeding and Blood in Stool
Blood in the stool needs medical attention; do not assume hemorrhoids are the cause. Heavy bleeding, vomiting blood, or bleeding with fainting requires emergency care. [1]
Hemorrhoids
Hemorrhoids may cause itching, swelling, discomfort, or bleeding. An evaluation can help distinguish hemorrhoids from other causes of similar symptoms.
Bloating and Gas
Recurring bloating can occur alongside constipation, food intolerance, IBS, and other conditions. Describe when it happens and any accompanying pain or bowel changes.
Abdominal Pain
The location, timing, severity, and pattern of abdominal pain help guide an evaluation. Sudden or severe pain should not wait for a routine office appointment.
Dr. Khan also evaluates irritable bowel syndrome, constipation, chronic diarrhea, swallowing difficulties, fatty liver disease, and other liver, pancreatic, and biliary concerns.
Irritable Bowel Syndrome Care
Ready to Discuss Your Digestive Concerns?
Request an appointment at our Katy office to discuss ongoing symptoms, review your digestive health, or ask about screening. Contact the team to confirm the next available appointment.
Know When to Seek Medical Attention
Do not wait for an online appointment response
Call 911 or seek emergency care for severe abdominal pain, chest pain, vomiting blood, heavy rectal bleeding, or bleeding with fainting or marked dizziness.
Black or tarry stools can be a sign of gastrointestinal bleeding and need immediate medical assessment. New bleeding or other concerning symptoms should not be left waiting in an online request form. [1]
This office appointment form is not an emergency service.
For ongoing, non-emergency symptoms
Contact the office about recurring heartburn, bloating, constipation, ongoing diarrhea, or persistent digestive discomfort. Explain recent changes when requesting your visit. Do not wait for symptoms to last a particular number of weeks before asking for medical advice.Reflux and Stomach Inflammation Care
When heartburn keeps returning
Discuss persistent reflux, nighttime symptoms, or heartburn that continues despite previous treatment. Dr. Khan reviews your history and considers whether changes to treatment or additional testing are appropriate. Upper endoscopy may be recommended for selected patients; it is not automatically needed for every reflux complaint.Explore GERD Evaluation and Treatment
Gastritis and upper stomach discomfort
Gastritis involves inflammation of the stomach lining. Upper abdominal discomfort, nausea, or early fullness can overlap with other digestive conditions. Evaluation may consider H. pylori infection, medicines, and other possible causes, with treatment directed at the findings. [5]Colonoscopy, Upper Endoscopy, and Testing Plans
Some digestive concerns require more information than symptoms alone can provide. Dr. Khan can discuss the purpose, benefits, risks, and alternatives of a recommended test.
Colonoscopy
Colonoscopy allows a doctor to examine the colon and rectum using a flexible camera. It may be recommended for colorectal cancer screening or to investigate symptoms and abnormal findings. Biopsies or polyp removal may be performed when appropriate. Colonoscopy is one of several screening options; discuss which approach fits your history and needs. [3]
Colonoscopy in Katy · Colonoscopy Preparation Instructions
Request a Colonoscopy ConsultationUpper Endoscopy — EGD
Upper endoscopy examines the esophagus, stomach, and first part of the small intestine. It may help investigate swallowing difficulty, persistent upper digestive symptoms, or suspected inflammation and ulcers. Your doctor can explain whether it is appropriate for your concerns. [4]
Ask About Upper EndoscopyConfirm where your procedure will take place. An office consultation and a procedure appointment are not necessarily at the same location. Confirm the facility address, arrival time, preparation instructions, and transportation requirements with the scheduling team before your procedure.
Ask whether other testing, such as a FibroScan liver assessment or capsule endoscopy, is relevant to your care and where it would be arranged.
Find the Katy Office and Plan Your Arrival
Our Katy office is located at 23920 Katy Freeway, Suite 555, Katy, TX 77494, in Memorial Hermann Medical Plaza 1, next to Memorial Hermann Katy Hospital. The location is near Interstate 10 and the Grand Parkway.
The office serves patients from Katy and surrounding communities, including Cinco Ranch, Fulshear, Cross Creek Ranch, Firethorne, Cane Island, and west Houston.
Surface-lot parking is available at the building. Call (346) 340-4414 before your visit for help locating the entrance or Suite 555, or to discuss any access assistance you may need.
Check the location in your appointment instructions before traveling, particularly when you are scheduled for a procedure rather than an office consultation.
United Gastroenterology Associates – Katy Office
Katy office – Katy Freeway (I-10) near the Grand Parkway
- Address: 23920 Katy Freeway, Suite 555, Katy, TX 77494
- Phone: (346) 340-4414
- Hours: Monday–Friday, 8:30 AM–5:00 PM (closed 12:00–1:30 PM for lunch; last appointment 4:30 PM)
Looking for our other office? Visit our Cypress gastroenterology office page for its address and appointment information.
Insurance and Self-Pay Information
United Gastroenterology Associates participates with many major insurance plans, including Blue Cross Blue Shield, Aetna, Cigna, UnitedHealthcare, Humana, Medicare and TRICARE Prime. Participation varies from plan to plan, so call (346) 340-4414 with your exact plan before scheduling at the Katy office. A carrier name alone does not confirm coverage for every plan, facility or procedure.
Ask about any referral or authorization requirements and the costs that may apply to your visit. Self-pay patients can contact the practice about consultation fees and colonoscopy or endoscopy arrangements.
For a procedure, ask which services are included in the estimate and whether you should expect separate charges. Confirm benefits with your insurer as well as the office.
Patient Experiences With United Gastroenterology
Read patient feedback about communication, appointments, and care at United Gastroenterology Associates.
Your First Appointment at the Katy Office
Request your visit
Call (346) 340-4414 or use the online appointment request. Select Katy as your preferred office and provide the contact information needed for a response.
Confirm the details
Your request is not a confirmed appointment until the office confirms the date, time, and location. Ask about insurance requirements and any records needed before the visit.
Prepare your questions and records
Ask the office which documents to bring. Useful information to have available includes your insurance details, a current medication list, relevant test reports, and the names of clinicians involved in your care.
Consider noting when symptoms began, what makes them better or worse, and what you have already tried. Questions may include: “What could be causing this?”, “Why is this test recommended?”, and “What should happen next?”
Follow individualized preparation instructions from your clinical team for any procedure. Do not use a general website checklist as a substitute or change prescribed medicines without appropriate clinical instructions.
Questions About Our Katy Gastroenterology Office
Where is the Katy office?
United Gastroenterology Associates is at 23920 Katy Freeway, Suite 555, Katy, TX 77494. Use the Katy directions link and check your appointment instructions before traveling.
Who sees patients at this office?
Dr. Muhammad Ali Khan sees patients at the Katy office. His physician profile provides information about his training, experience, and digestive and liver care.
What are the office hours?
The published Katy schedule is Monday–Friday, 8:30 AM–5:00 PM, with a lunch closure from 12:00–1:30 PM. The last appointment is 4:30 PM. Call to confirm availability or holiday arrangements.
What digestive concerns can I discuss?
The practice evaluates reflux, abdominal discomfort, bloating, bowel changes, IBS, inflammatory bowel disease, and liver concerns. Call promptly about new bleeding or other concerning symptoms; use emergency care when appropriate rather than waiting for an online response.
Is the office an option for patients from Cinco Ranch or Fulshear?
The Katy office serves patients from these communities. Check the map for a route to the actual Katy Freeway address and confirm appointment availability before traveling. The office is in Katy, not a separate Cinco Ranch or Fulshear location.
Do I need a referral?
Check with your insurer and the office before scheduling. Ask whether your plan requires a referral or authorization and whether any records should be sent before your visit.
Does the practice accept my insurance?
Contact the office with your exact plan information. Participation and coverage must be checked for your particular plan and service; a carrier logo alone does not confirm coverage.
Can I ask about self-pay care?
Yes. Contact the practice about self-pay consultation and procedure arrangements. Request an estimate and clarification of what is included before booking.
Can I arrange a colonoscopy through the practice?
You can request a consultation to discuss colonoscopy for screening or evaluation. If it is recommended, confirm the procedure facility, preparation instructions, and appointment details with the scheduling team.
When should colorectal cancer screening begin?
For adults at average risk without symptoms, the USPSTF recommends screening from age 45 through 75. Screening from 76 through 85 is individualized. A personal or family history may require a different plan. Symptoms need their own evaluation rather than waiting for a routine screening age. [2]
Can I book an appointment for a child or teenager?
Call the office to confirm the ages accepted before requesting pediatric or adolescent care. Do not assume the practice provides pediatric gastroenterology services.
How soon can I be seen?
Call (346) 340-4414 to ask about the next available Katy appointment. Availability changes, and an online request does not reserve a time until the office confirms it.
Request Your Katy Gastroenterology Appointment
Discuss your digestive symptoms, liver concerns, or screening needs with United Gastroenterology Associates. Contact our Katy office to request a visit and confirm the details before you arrive.
23920 Katy Freeway, Suite 555, Katy, TX 77494
(346) 340-4414
For a medical emergency, call 911. Do not use the appointment request form for emergency care.
Medical Information and Sources
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Symptoms & Causes of Gastrointestinal Bleeding.
- U.S. Preventive Services Task Force (USPSTF). Colorectal Cancer: Screening.
- NIDDK. Colonoscopy.
- NIDDK. Upper GI Endoscopy.
- NIDDK. Symptoms & Causes of Gastritis & Gastropathy.
This page provides general educational information and does not replace individual medical advice, diagnosis, or treatment. Discuss your symptoms and care with a qualified medical professional. For a medical emergency, call 911.