Finding Providers

We found 5 providers with an interest in gastrointestinal problems and who accept United Healthcare near San Antonio, TX.

Dr. Fernando Enrique Membreno, MD
Specializes in Adult Gastroenterology, Adult Transplant Hepatology
621 Camden Street
San Antonio, TX

Dr. Fernando Membreno sees patients in San Antonio, TX and Live Oak, TX. His medical specialties are adult gastroenterology and adult transplant hepatology. Dr. Membreno's education and training includes medical school at Autonomous University of Central America and residency at Staten Island University Hospital. Areas of expertise for Dr. Membreno include alpha-1 antitrypsin deficiency, hepatitis C, and bile duct cancer (cholangiocarcinoma). He is in-network for Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold, in addition to other insurance carriers. His professional affiliations include Methodist Health System and Southwest General Hospital.

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Relevant Interests: , liver cancer

All Interests: Cirrhosis, Liver Cancer, Bile Duct Cancer, Hepatitis B, Medication, Hepatitis C, Hemochromatosis, ... (Read more)

Dr. Ravi Lakshmana Ganeshappa, MD
Specializes in Adult Gastroenterology
621 Camden
San Antonio, TX

Dr. Ravi Ganeshappa specializes in adult gastroenterology and practices in San Antonio, TX, Camden San Antonio, TX, and Jourdanton, TX. His areas of expertise include the following: diarrhea, ulcers, and hemorrhoids. Dr. Ganeshappa is professionally affiliated with Metropolitan Methodist Hospital and Nix Health. He graduated from Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine and the University of Texas Health Science Center at San Antonio, School of Medicine and then he performed his residency at a hospital affiliated with the University of Texas Southwestern Medical Center at Dallas. He is an in-network provider for several insurance carriers, including Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold.

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Relevant Interests: , diarrhea, hemorrhoids, constipation

All Interests: Hemorrhoids, Ulcers, Hernia, Gastrointestinal Endoscopy, Constipation, Diarrhea, Abdominal Pain

Dr. Mark Alan Gilger, MD
Specializes in Pediatric Gastroenterology
333 N Santa Rosa Street
San Antonio, TX

Dr. Mark Gilger practices pediatric gastroenterology in Houston, TX and San Antonio, TX. His areas of clinical interest consist of gastrointestinal problems (digestive disorders), pancreas problems, and gallbladder problems. Dr. Gilger is affiliated with Texas Children’s Hospital. He accepts Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold, in addition to other insurance carriers. He graduated from Creighton University School of Medicine. He has received professional recognition including the following: Texas Super Doctors.

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Relevant Interests: , gastrointestinal problems (digestive disorders)

All Interests: Gastrointestinal Endoscopy, Gastrointestinal Problems, Gallbladder Problems, Pancreas Problems

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

Dr. Steve Duffy's medical specialty is general surgery. Before completing his residency at a hospital affiliated with the University of Texas Health Science Center at San Antonio, Dr. Duffy attended medical school at the University of Texas Southwestern Medical School and the University of Texas Medical Branch School of Medicine. Dr. Duffy's areas of expertise include breast surgery, thyroid surgery, and colon problems. He is in-network for Blue Cross/Blue Shield, CIGNA Plans, TRICARE, and more. Dr. Duffy is conversant in Spanish. He is affiliated with Centennial Medical Center, Texas Health Presbyterian Hospital Allen, and Texas Health Presbyterian Hospital Plano. He has an open panel.

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Relevant Interests: , colon problems, rectal problems

All Interests: Thyroid Surgery, Breast Surgery, Rectal Problems, Colon Problems, Surgical Procedures, Hernia, ... (Read more)

No Photo
Specializes in General Surgery, Colon & Rectal Surgery
343 West Houston; Suite 705
San Antonio, TX

Dr. Rolando Saenz practices general surgery and colon & rectal surgery. He graduated from the University of Texas Health Science Center at San Antonio, School of Medicine. His areas of expertise include colorectal problems. The average patient rating for Dr. Saenz is 3.5 stars out of 5. Dr. Saenz is in-network for Blue Cross/Blue Shield, Blue Cross Blue Shield Bronze, and Blue Cross Blue Shield HMO, as well as other insurance carriers. He is affiliated with Nix Health and Southwest General Hospital.

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Relevant Interests: , colorectal problems

All Interests: Colorectal Problems

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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.