Finding Providers

We found 6 providers with an interest in gastrointestinal problems and who accept Aetna Senior Health Plan near Fountain Valley, CA.

Dr. Duke Duc Hoang Nguyen, MD
Specializes in Adult Gastroenterology
9900 Talbert Avenue; Suite 100
Fountain Valley, CA

Dr. Duke Nguyen's area of specialization is adult gastroenterology. His patients gave him an average rating of 1.5 out of 5 stars. His areas of expertise include hepatobiliary disorders, inflammatory bowel disease, and acid reflux (GERD). Dr. Nguyen is professionally affiliated with Orange Coast Memorial Medical Center and Greater Newport Physicians (GNP). Dr. Nguyen takes several insurance carriers, including Aetna EPO, Anthem, and Blue Cross/Blue Shield. His practice is open to new patients. He graduated from St. George's, University of London. For his professional training, Dr. Nguyen completed residency programs at Los Angeles County+USC Medical Center and a hospital affiliated with the University of California, Los Angeles (UCLA). He speaks Vietnamese.

Read more

Relevant Interests: , inflammatory bowel disease, colorectal cancer, acid reflux (GERD)

All Interests: Hepatobiliary Disorders, Inflammatory Bowel Disease, Hepatitis, Acid Reflux, Colorectal Cancer

No Photo
Specializes in Adult Gastroenterology
11100 Warner Avenue; Suite 268
Fountain Valley, CA

Dr. Davinder Singh is a specialist in adult gastroenterology. He works in Fountain Valley, CA. Clinical interests for Dr. Singh include bloodless medicine/transfusion-free surgery and acid reflux (GERD). Dr. Singh is in-network for several insurance carriers, including Anthem, Blue Cross/Blue Shield, and Medi-Cal. After attending Government Medical College, Patiala for medical school, he completed his residency training at VA Wadsworth Medical Center. Dr. Singh (or staff) speaks the following foreign languages: Spanish and Punjabi.

Read more

Relevant Interests: , acid reflux (GERD)

All Interests: Bloodless Medicine/Transfusion-Free Surgery, Acid Reflux

No Photo
Specializes in General Surgery, Vascular Surgery
11180 Warner Avenue; Suite 161
Fountain Valley, CA

Dr. Nguyen Duy is a physician who specializes in general surgery and vascular surgery. Dr. Duy attended medical school at Ho Chi Minh City University of Medicine and Pharmacy. His residency was performed at Charleston Area Medical Center. His areas of expertise include minimally invasive surgery, bloodless medicine/transfusion-free surgery, and varicose veins. Dr. Duy takes Anthem, Blue Cross/Blue Shield, HealthSmart, and more. He is conversant in Vietnamese. He is affiliated with Orange Coast Memorial Medical Center.

Read more

Relevant Interests: , hemorrhoids

All Interests: Bloodless Medicine/Transfusion-Free Surgery, Varicose Veins, Minimally Invasive Surgery, Hemorrhoids

Dr. Atif Iqbal, MD
Specializes in General Surgery, Bariatric Surgery
18111 Brookhurst Street; Suite 5600
Fountain Valley, CA

Dr. Atif Iqbal is a specialist in general surgery and bariatric surgery. He works in Fountain Valley, CA. After completing medical school at the University of the Punjab and Allama Iqbal Medical College, he performed his residency at The Brooklyn Hospital Center. Dr. Iqbal's areas of expertise include gallbladder removal surgery (cholecystectomy), colectomy (colon resection), and hernia. His average patient rating is 5.0 stars out of 5. He is an in-network provider for Aetna EPO, Anthem, Blue Cross/Blue Shield, and more. Dr. Iqbal (or staff) speaks Urdu, Hindi, and Punjabi. He is professionally affiliated with Orange Coast Memorial Medical Center, Greater Newport Physicians (GNP), and St. Joseph Hospital - Orange, CA. He has an open panel.

Read more

Relevant Interests: , acid reflux (GERD)

All Interests: Colectomy, Fundoplication, Nissen Fundoplication, Weight Management, Da Vinci Surgery, Acid Reflux, ... (Read more)

Hospitals affiliated with provider +
Dr. Richard Allen Guerrero Jr., MD
Specializes in General Surgery
11100 Warner Avenue; Suite 258
Fountain Valley, CA

Dr. Richard Guerrero is a general surgery specialist. He is conversant in Spanish. Dr. Guerrero's areas of expertise include the following: minimally invasive surgery, breast surgery, and gallbladder problems. He is affiliated with MemorialCare Health System. Dr. Guerrero graduated from the University of Southern California (USC), Keck School of Medicine and then he performed his residency at Martin Luther King, Jr.-Harbor Hospital, a hospital affiliated with Charles R. Drew University of Medicine and Science, and a hospital affiliated with the University of California, Irvine. Aetna EPO, Anthem, and Blue Cross/Blue Shield are among the insurance carriers that Dr. Guerrero honors.

Read more

Relevant Interests: , acid reflux (GERD)

All Interests: Breast Surgery, Wounds, Acid Reflux, Gallbladder Problems, Abdominal Surgery, Minimally Invasive ... (Read more)

No Photo
Specializes in Family Medicine
2414 S Fairview Street; #112
Santa Ana, CA

Dr. Mark Monroe is a family medicine practitioner. Dr. Monroe (or staff) speaks Spanish and Russian. Dr. Monroe has a special interest in bloodless medicine/transfusion-free surgery, biopsy, and hemorrhoids. He graduated from Autonomous University of Guadalajara Faculty of Medicine and then he performed his residency at Los Angeles County+USC Medical Center and a hospital affiliated with SUNY, University at Buffalo. He is an in-network provider for Blue Cross/Blue Shield, Coventry, and Coventry Health Care Plans, as well as other insurance carriers.

Read more

Relevant Interests: , hemorrhoids

All Interests: Bloodless Medicine/Transfusion-Free Surgery, Biopsy, Hemorrhoids, Allergy Testing

Conditions / Treatments


New Patients

Medicare Patient Age

Medicare Patient Conditions

Medicare Patient Ethnicity

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.