Your primary care doctor is typically the first and often the only doctor you need for GERD. Most people with straightforward heartburn and regurgitation are diagnosed and treated entirely in a primary care setting, without any specialist involvement. If symptoms persist or warning signs appear, a gastroenterologist becomes the next step, and in rare cases, a surgeon may get involved.
Starting With Your Primary Care Doctor
GERD is generally diagnosed based on your symptoms alone. If you have typical heartburn and regurgitation with no red flags, your primary care doctor will usually start you on a trial of acid-reducing medication taken once daily, 30 minutes before breakfast. This trial lasts 4 to 8 weeks. If your symptoms resolve during that time, the diagnosis is essentially confirmed without any further testing.
If you get partial relief, your doctor may increase to twice-daily dosing for another 4 to 8 weeks. If there’s no improvement at all, that’s when further investigation begins. For people with erosive damage to the esophagus, healing typically requires at least 8 weeks of treatment, with more than 80% of cases healing successfully on medication alone. Many people manage their GERD at this level of care for years without ever needing a specialist.
When You Need a Gastroenterologist
A gastroenterologist is a doctor who specializes in the digestive system, and they’re the main specialist for GERD that doesn’t respond to initial treatment. Your primary care doctor will refer you to one if medication isn’t working, if your symptoms come back repeatedly after stopping treatment, or if you develop any warning signs that suggest something more serious.
Those warning signs include:
- Difficulty swallowing or a feeling that food gets stuck behind your chest
- Unintended weight loss of 5% or more of your body weight within six months
- Signs of bleeding such as vomiting blood, material that looks like coffee grounds, or black, tarry stools
- Persistent vomiting
- Iron deficiency that doesn’t resolve with treatment
- Choking or breathing problems caused by acid reaching the airway, including chronic cough or hoarseness
Your doctor may also recommend an early referral if you have risk factors for a condition called Barrett’s esophagus, which is a precancerous change in the lining of the esophagus. Risk factors include being over 50, male, having central obesity, smoking, having GERD for five years or longer, or having a family history of Barrett’s esophagus or esophageal cancer.
What a Gastroenterologist Does Differently
The key advantage of seeing a gastroenterologist is access to diagnostic tests your primary care doctor can’t perform. The most common is an upper endoscopy, where a thin tube with a tiny camera is passed down your throat to directly examine your esophagus, stomach, and upper digestive tract. This lets the doctor see inflammation, ulcers, narrowing, or precancerous tissue and take small tissue samples if needed. You’re sedated during the procedure, and it typically takes 15 to 20 minutes.
If your main symptom is chest pain that isn’t coming from your heart, or if the standard treatments haven’t worked, a gastroenterologist may order esophageal manometry. During this test, a thin, flexible tube is passed through your nose, down your esophagus, and into your stomach. Pressure sensors along the tube measure how well the muscles in your esophagus contract and coordinate when you swallow. This helps identify whether a motility problem is contributing to your symptoms.
Another specialized test is ambulatory pH monitoring, which tracks how much acid is actually reaching your esophagus over a 24 to 48 hour period. This is particularly useful when the diagnosis is unclear or when symptoms don’t match what the endoscopy shows.
Surgeons for Severe or Medication-Resistant GERD
A small percentage of people with GERD end up needing surgery. This happens when medication doesn’t adequately control symptoms despite proper use, or when someone prefers a long-term fix over taking daily medication indefinitely. The surgeon you’d see is typically a general surgeon with specialized training in foregut surgery (the upper portion of the digestive tract).
The standard surgical procedure is called a Nissen fundoplication, where the top of the stomach is wrapped around the lower esophagus to reinforce the valve that prevents acid from flowing upward. It’s done laparoscopically through small incisions. A newer option is a magnetic device implanted around the junction between the esophagus and stomach. This ring of magnetic beads opens to let food through and closes to block reflux. It’s approved for people whose GERD has been confirmed by pH testing and who haven’t responded to medication, though it isn’t suitable for everyone. People with large hiatal hernias, severe esophageal damage, motility disorders, or a BMI over 35 are generally not candidates.
For patients who are obese and have GERD that hasn’t responded to a prior surgery, conversion to a type of gastric bypass is another option that addresses both the reflux and the weight.
GERD in Infants and Children
In babies and young children, a pediatric gastroenterologist handles GERD that goes beyond normal spitting up. Most infants spit up regularly, and that alone isn’t cause for concern. But certain signs suggest something more than routine reflux: arching of the back during or after feeding, refusing to eat, poor weight gain, choking or gagging, wheezing, or irritability that consistently accompanies regurgitation.
Some symptoms in infants need immediate medical attention. These include projectile vomiting, bile-colored (green or yellow) vomit, signs of dehydration like no wet diapers for three or more hours, blood in vomit or stool, and failure to gain weight as expected. Vomiting or regurgitation that first appears before two weeks of age or after six months also warrants prompt evaluation, since it may point to a structural problem rather than simple reflux. Your pediatrician will typically be the one to evaluate these symptoms first and refer to a pediatric gastroenterologist if needed.
Choosing the Right Starting Point
For the vast majority of adults, your primary care doctor or family physician is the right first call. They can diagnose GERD, start treatment, and monitor your progress. You don’t need a referral to a gastroenterologist unless treatment isn’t working or warning signs develop. If you already know you have complications like Barrett’s esophagus, going directly to a gastroenterologist for ongoing surveillance makes sense. And if you’ve been managing GERD for years with medication and want to explore whether surgery could eliminate the need for daily pills, ask your gastroenterologist about a referral to a foregut surgeon for evaluation.