Finding Providers

We found 3 providers with an interest in gastrointestinal problems and who accept United Healthcare near San Antonio, TX.

Mark Alan Gilger MD
Specializes in Pediatric Gastroenterology
333 N Santa Rosa Street
San Antonio, TX
(210) 704-2395; (210) 704-4894

Dr. Mark Gilger is a pediatric gastroenterology specialist. In his practice, he is particularly interested in gastrointestinal problems (digestive disorders), pancreas problems, and gallbladder problems. Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold are among the insurance carriers that Dr. Gilger honors. Dr. Gilger studied medicine at Creighton University School of Medicine. He has received the following distinction: Texas Super Doctors. He is professionally affiliated with Texas Children’s Hospital.

Read more

Relevant Interests: , gastrointestinal problems (digestive disorders)

All Interests: Gastroenterology, Focus in gastroenterology infections, Gastrointestinal endoscopy (therapeutic), ... (Read more)

Dr. Rolando Humberto Saenz MD
Specializes in General Surgery, Colon & Rectal Surgery
Stone Oak Physicians Plaza One; 19016 Stone Oak Parkway Suite 610
San Antonio, TX
(210) 545-3670; (210) 941-1000

Dr. Rolando Saenz's specialties are general surgery and colon & rectal surgery. He practices in San Antonio, TX and Hondo, TX. Clinical interests for Dr. Saenz include colorectal problems. The average patient rating for Dr. Saenz is 3.5 stars out of 5. He honors several insurance carriers, including Blue Cross/Blue Shield, Blue Cross Blue Shield Bronze, and Blue Cross Blue Shield HMO. After completing medical school at the University of Texas Health Science Center at San Antonio, School of Medicine, he performed his residency at Chicago Medical School. Dr. Saenz speaks Spanish. His hospital/clinic affiliations include Methodist Health System, Nix Health, and Southwest General Hospital.

Read more

Relevant Interests: , colorectal problems

All Interests: Colon/Rectal

Dr. Steve Laurier Duffy MD
Specializes in General Surgery
3851 Roger Brooke Drive
San Antonio, TX

Dr. Steve Duffy works as a general surgeon. In his practice, he is particularly interested in breast surgery, thyroid surgery, and hernia. He is an in-network provider for Blue Cross/Blue Shield, CIGNA Plans, and TRICARE, in addition to other insurance carriers. Dr. Duffy studied medicine at the University of Texas Southwestern Medical School and the University of Texas Medical Branch School of Medicine. His residency was performed at a hospital affiliated with the University of Texas Health Science Center at San Antonio. In addition to English, he speaks Spanish. Dr. Duffy is affiliated with Centennial Medical Center, Texas Health Presbyterian Hospital Allen, and Texas Health Presbyterian Hospital Plano. He is open to new patients.

Read more

Relevant Interests: , colon problems

All Interests: Advanced Laparoscopic General Surgery, Breast Surgery, Colon/Rectal Surgery, Hernia, Robotic ... (Read more)


Conditions / Treatments


New Patients

Medicare Patient Age

Medicare Patient Conditions

Medicare Patient Ethnicity

Medicare Patient Gender

Medicare Patient Insurance Eligibility

Additional Information


Foreign Language


Online Communication

Patient Demographic

Practice Affiliation


Medical School



Years Since Graduation

What are Gastrointestinal Problems?

The gastrointestinal system, or GI tract, is the name given to a collection of organs that work together to digest food. These organs fit together in a long tube, running from the mouth to the anus, and include the esophagus, stomach, and intestines, among others. With so many parts working together, complicated by today’s busy lifestyles and diets, digestive problems are common. As many as 1 in 3 Americans have a digestive or GI disorder. There are a huge variety of digestive problems, but the most common are IBS, constipation, GERD, hemorrhoids, and ulcers.

IBS, or irritable bowel syndrome, happens when the muscles surrounding the colon contract too easily or frequently. The result is abdominal pain, cramps, diarrhea or constipation, gas and bloating. IBS attacks can often be brought on by specific triggers, so a key part of treatment is learning which foods trigger IBS attacks and avoiding them. Treatment also includes exercise, avoiding stress, and medications if needed.

Constipation, or large, hard, or infrequent stools, happens to everyone at some point. It can be caused by a disruption in routine or food, or by eating a diet without many fresh fruits and vegetables. Although it is uncomfortable, constipation is common and usually not serious, but it can sometimes become chronic. Adding fiber to the diet, exercising, and taking medications may help.

GERD, or gastroesophageal reflux disease, is a severe form of chronic heartburn where stomach acid spills back up into the esophagus. Left untreated, the acid may even eat away at the esophagus and cause serious damage. Treatment includes changing the diet to avoid trigger foods, losing weight if needed, medications, or even surgery.

Hemorrhoids are blood vessels around the rectum that become irritated, swollen or torn while straining during a bowel movement. They are most often caused by constipation, but can also be caused by pregnancy, diarrhea, or simply a genetic predisposition towards hemorrhoids. Treatment involves first treating any constipation issues, then keeping the area clean and soothed until it has healed. If these measures are ineffective, surgery is sometimes used.

Peptic ulcers are sores or spots of inflammation in the lining of the stomach or close to the stomach in the small intestine. Usually this area is coated with a protective lining that shields the tissue from the strong stomach acid, but a break in the lining can let acid in, causing the sores. It used to be thought that stress caused ulcers, but now we know that is not the case. Most often, they are caused by an infection by H. pylori bacteria, but ulcers can also be caused by alcohol abuse or overuse of aspirin, ibuprofen, naproxen, or other NSAIDS. The symptoms of an ulcer are pain, hunger, nausea, and fatigue.

Gastrointestinal problems, perhaps more than any other area, are markedly affected by lifestyle. Many disorders can be prevented or treated at least in part by eating a healthy diet high in fiber, exercising regularly, drinking enough water, and limiting alcohol intake. Still, the frequency of digestive disorders means that even the healthiest person can be affected by them. See your doctor if you notice blood in your stool, abdominal pain, unexplained weight loss, or any significant change in bowel movements.