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Dr. Mark Allen Feist, MD is a pediatrician in Lubbock, TX specializing in general pediatrics and pediatric gastroenterology. He graduated from Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine. Dr. Mark Allen Feist, MD is affiliated with Cook Children's and Cook Children's Gastroenterology (Lubbock).
Gastrointestinal Problems (Digestive Disorders)
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 it is known 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. Anyone who notices blood in their stool, experiences abdominal pain, unexplained weight loss, or any significant change in bowel movements should see a doctor.
Dr. Mark Allen Feist, MD graduated from Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine. He completed residency at Texas Tech University Health Sciences Center. He is certified by the American Board of Pediatrics Pediatric Gastroenterology Hepatology Nutrition and has a state license in Texas.
Medical School: Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine
Residency: Texas Tech University Health Sciences Center
Board Certification: American Board of Pediatrics Pediatric Gastroenterology Hepatology Nutrition
Licensed In: Texas
Dr. Mark Allen Feist, MD is associated with these hospitals and organizations:
Dr. Mark Allen Feist, MD appears to accept the following insurance providers: Cigna Healthcare of Texas, MultiPlan Inc/PHCS, Aetna, Galaxy Healthcare Network, EHN- Employers Health Network, Providence Health Alliance, First Health Network, United Healthcare PPO/EPO, Blue Cross Blue Shield of Texas PPO, HealthSmart Payors Organization/HealthSmart, Imagine Health, USA Managed Care Organizations, Baylor Scott and White Health Plan, Fort Worth Firefighters 440, HealthScope and Blue Cross Blue Shield HealthSelect of Texas.
According to our sources, Dr. Mark Allen Feist, MD accepts the following insurance providers:
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These charts describe general payments received by Dr. Mark Allen Feist, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.
| Alexion Pharmaceuticals, Inc. |
$96
Kanuma $96 |
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|---|---|---|---|---|---|---|
| AbbVie Inc. |
$70
Creon $53 |
Humira $17 |
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| GENZYME CORPORATION |
$67
DUPIXENT $67 |
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| Echosens North America, Inc. |
$56
Fibroscan $56 |
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| Takeda Pharmaceuticals U.S.A., Inc. |
$42
EOHILIA $23 |
GATTEX $19 |
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| Other |
$168
RELIZORB $27 |
ZENPEP $25 |
DUPIXENT $23 |
CYLTEZO $21 |
Humira $20 |
Other $53 |
| Food and Beverage | $474 |
|---|---|
| Education | $25 |
Dr. Mark Feist practices pediatric gastroenterology and general pediatrics. Dr. Feist's clinical interests encompass gastrointestinal problems (digestive disorders) and consultation. He can accept Blue California, HealthSmart, and Coventry, as well as other insurance carriers. His education and training includes medical school at Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine and residency at Texas Tech University Health Sciences Center. Dr. Feist is affiliated with Cook Children's. Cook Children's reports that he is accepting new patients at his office in Lubbock, TX.