Gastroparesis Treatment in St. Petersburg, FL

If your stomach empties too slowly and medications and diet changes haven’t helped, a gastric per-oral endoscopic pyloromyotomy (G-POEM) can improve how fast your stomach empties without a single incision. Dr. Gopal Grandhige performs this 20 to 30 minute endoscopic procedure at Tampa Bay Reflux Institute, roughly 20 minutes across the bay from St. Petersburg in South Tampa. He is one of only a handful of surgeons in the Tampa Bay area who performs it.

What gastroparesis is, and how it’s actually diagnosed

Gastroparesis means delayed gastric emptying: the stomach’s muscle contractions are sluggish or absent, so food sits far longer than it should. That backup causes early fullness after a few bites, nausea, bloating, regurgitation of food eaten hours earlier, and weight loss. It overlaps heavily with reflux, which is one reason it gets missed for years.

The test that confirms it is a gastric emptying study (scintigraphy). You eat a light meal, usually eggs and toast or oatmeal, containing a small amount of radioactive tracer, and a scanner tracks how fast the meal leaves your stomach over four hours. An upper endoscopy doesn’t diagnose gastroparesis on its own, but it raises suspicion: if food is still sitting in your stomach after you’ve fasted for hours before the scope, that’s a clue. You can read the fuller clinical picture on the practice’s main gastroparesis page.

One detail that matters more in 2026 than it used to: GLP-1 weight-loss and diabetes drugs such as semaglutide slow gastric emptying by design, and newer reporting has tied them to gastroparesis-like symptoms. If you started one of these medications and then developed early fullness and nausea, that history changes the diagnostic conversation. It is worth raising before any procedure is considered, because the cause changes the plan.

Cross-section illustration of the stomach and pylorus showing delayed gastric emptying in gastroparesis

What G-POEM does and how the procedure works

G-POEM releases the pylorus, the muscular valve between your stomach and small intestine. When that valve stays too tight to relax, food can’t pass into the intestine at a normal rate. During the procedure, Dr. Grandhige passes a flexible endoscope through your mouth, creates a small tunnel under the pyloric muscle, and divides that muscle with an endoscopic knife so the valve opens more easily. Nothing is cut on the outside of your body.

The procedure takes about 20 to 30 minutes. Because it is endoscopic and incisionless, there are no abdominal wounds, recovery is faster than open or laparoscopic surgery, and most patients go home the same day. This is the same incisionless philosophy behind the other procedures performed at the practice, including TIF / EsophyX for reflux.

It is important to be honest about what G-POEM is and is not. Like other gastroparesis treatments, it is aimed at improving symptoms, not curing the underlying motility disorder. Published outcome data on G-POEM reports meaningful symptom improvement in a majority of carefully selected patients, with results that are strong early and less uniform over the long term, which is exactly why patient selection carries more weight than the procedure itself. For a clinical overview of gastroparesis and its treatments, the National Institute of Diabetes and Digestive and Kidney Diseases is a reliable starting point.

Who is a candidate, and who is not

Not everyone with delayed emptying should have G-POEM, and saying so up front is part of the evaluation. The right candidate has gastroparesis confirmed on a gastric emptying study, symptoms that line up with that delay, and a poor response to diet changes and promotility or anti-nausea medications. Dr. Grandhige reviews the emptying study, your symptom pattern, and your overall health before recommending anything.

The patients who often need a different path first are those with severe weight loss and malnutrition, who may be too high-risk for a definitive procedure until their nutrition is stabilized, and patients whose symptoms turn out to be driven by something other than gastroparesis. Early fullness, nausea, and bloating can come from reflux, functional stomach disorders, or a motility problem like achalasia, and those are treated very differently. The point of the workup is to separate the symptom from the cause before anyone picks up an endoscope.

If you are not a candidate, you should leave knowing why and what to do instead. That is the same standard Dr. Grandhige applies across his reflux practice: objective testing decides, and a procedure is recommended only when the evidence supports it.

G-POEM compared with the gastric pacemaker offered in Pinellas County

St. Petersburg patients researching advanced options usually run into two names: the gastric pacemaker (gastric electrical stimulation) and G-POEM. They work differently, and neither is automatically better.

The gastric pacemaker, implanted in Pinellas County for refractory cases, is a device placed surgically that stimulates the stomach muscles. It is implanted hardware, which some patients prefer to avoid and others are reassured by. G-POEM is the incisionless alternative: no implant, no external incisions, a roughly half-hour endoscopic procedure that physically opens the tight pyloric valve. For a patient whose main barrier is a pylorus that won’t relax, G-POEM addresses that mechanism directly. The decision comes down to your testing, your anatomy, and your priorities, which is exactly the kind of head-to-head, locally specific comparison the promotional pages tend to skip.

There is also a third option worth naming honestly: multidisciplinary motility programs on Florida’s west coast that combine gastroenterology, nutrition, and related specialties in one setting. Those are well suited to complex cases with several overlapping conditions, for example gastroparesis alongside POTS or significant nutritional issues. If your situation is that layered, that route may fit better than any single procedure, and Dr. Grandhige will say so.

Why a foregut specialist, and why the same team every time

Gastroparesis sits squarely inside foregut surgery, the esophagus, diaphragm, and stomach, which is the entire focus of this practice. Dr. Grandhige has practiced foregut surgery in Tampa Bay since 2009 and completed his fellowship in Foregut Surgery and Minimally Invasive Surgery at Yale-New Haven Hospital. He is board certified in general surgery, a Fellow of the American College of Surgeons, a member of SAGES, and a founding member of the American Foregut Society. The single focus matters because distinguishing gastroparesis from reflux, functional disorders, and motility conditions is pattern recognition built from seeing these cases constantly rather than occasionally.

It also matters who is in the room. Dr. Grandhige performs every procedure at HCA Florida South Tampa Hospital with the same dedicated surgical team and his own physician assistant, who assists in every case and knows each patient’s anatomy and recovery course. After your procedure you have direct access to him and his team, not a rotating call line. That continuity is one of the most consistent things patients and referring physicians point to.

Dr.Grandhige in a medical setting

What the process looks like for a St. Petersburg patient

The path is built to be efficient without rushing the diagnosis. Before you ever come in, Dr. Grandhige personally reviews your records, prior diagnostic studies, and notes from other physicians, so the first visit starts from where you actually are. New patients are typically seen within two weeks and always within four weeks.

If your gastric emptying study and workup are already complete, one consultation is often enough to confirm the diagnosis, discuss whether G-POEM fits, and begin insurance authorization. If testing is still needed, the practice coordinates it through a small number of trusted facilities to keep quality high and delays short, with a follow-up visit to review results and finalize the plan. From first consultation to procedure typically runs four to eight weeks depending on testing and insurance authorization, which the office handles for you. Coming from St. Petersburg, that’s a roughly 20 minute drive to South Tampa for the visits and the procedure itself.

If you have questions about the process before booking, you can reach the team through the contact page.

Getting here from St. Petersburg

Tampa Bay Reflux Institute is at 1315 South Howard Avenue, Suite 101, in South Tampa’s SoHo district, a short drive from St. Petersburg across the bay. The office is in a yellow brick building next to Sally O’Neill’s Pizza, with parking behind Sally O’Neill’s, so you’re not circling for a spot. All procedures are performed at HCA Florida South Tampa Hospital nearby.

Patients come to the practice from across Pinellas and the wider region, including St. Petersburg, Clearwater, and the South Tampa neighborhoods of Hyde Park, Palma Ceia, and Bayshore, as well as from Sarasota, Orlando, and farther across Florida for foregut-specific evaluation. You can verify Dr. Grandhige’s credentials and read more clinical detail on the about page and the practice blog.

FAQS

Often the cause is unknown. Known causes include diabetes, prior surgery, and certain medications, opioid pain relievers, some antidepressants, and some blood-pressure and allergy drugs, that slow stomach emptying. GLP-1 medications such as semaglutide also slow emptying and have been linked to gastroparesis-like symptoms. Identifying the cause is part of the workup because it changes the treatment.

With a gastric emptying study (scintigraphy), where a scanner tracks how fast a lightly radioactive meal leaves your stomach over four hours. This is the test that objectively confirms delayed emptying. An endoscopy may raise suspicion if food remains after fasting, but it doesn’t make the diagnosis by itself.

Yes. The entire procedure is done through the mouth with a flexible endoscope, with no external incisions, and takes about 20 to 30 minutes. Most patients go home the same day.

A gastric pacemaker is an implanted device that electrically stimulates the stomach muscles and is placed surgically. G-POEM uses no implant and no incisions; it endoscopically divides the tight pyloric muscle so the stomach empties more easily. Which one fits depends on your testing, anatomy, and preferences.

No. Like all current gastroparesis treatments, G-POEM is aimed at improving symptoms, not curing the underlying motility disorder. Published data shows symptom improvement in a majority of well-selected patients, which is why careful candidate selection matters so much.

You’ll be told why and pointed toward what fits, whether that’s stabilizing nutrition first, treating a different underlying condition such as reflux or achalasia, or a multidisciplinary motility program for complex cases. A procedure is recommended only when objective testing supports it.

It can. GLP-1 medications slow gastric emptying as part of how they work, so symptoms that began after starting one may have a different cause and a different solution. Bring that medication history to the consultation; it’s an important part of the evaluation.

New patients are typically seen within two weeks and always within four. The office is in South Tampa, roughly a 20 minute drive from St. Petersburg, and insurance authorization is handled by the practice. Most patients go from first visit to procedure within four to eight weeks depending on testing.

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An endoscopy cannot tell you if you have reflux. It can only tell you if you have complications of GERD. 

If you are unhappy with your reflux symptoms, come in and we can discuss testing and treatments that can accurately diagnose your problem. 

#reflux #gerd #hiatalhernia #gastroparesis #linx

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CALL US AT 813-922-2920
www.tampareflux.com

If you have a hiatal hernia and fit one of these categories, you should know your options. 

Dr. Grandhige is an expert in his field and performs 200 of these surgeries a year.  He is the only surgeon in the Tampa Bay Area who offers all surgical options - LINX, Fundoplications, TIF and will be one of 20 surgeons in America introducing the latest procedure RefluxStop in 2026. 

We accept most insurances but will verify yours before you come in.  These procedures are considered medically necessary and covered by your insurance.  You can expect to pay your in-network deductibles and nothing else. 

#hiatalhernia #reflux #GERD #LINX #refluxstop

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What causes reflux ?

1.  Weak lower esophageal sphincter
2.  Hiatal hernia
3.  Flattening of the Angle of His
4.  Poor esophageal motility
5.  Gastroparesis (slow stomach)

NOT increased acid production

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Don’t let GERD get in the way of living your life.  Request your appointment with us today on the link below. 
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https://tampareflux.com/contact-us/

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Anyone can be victim to GERD and though weight loss can help reduce GERD symptoms. Many athletes with high impact workouts may continue to have these symptoms. This may be a symptom of a hiatal hernia or other issue. We are more then happy to assist you in finding your solution, just click the link below. 
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If you are tired of avoiding your favorite foods or taking daily medications, we can help. 

We are the Tampa experts in reflux !  With years of experience and thousands of patients treated successfully, we offer all FDA approved anti-reflux procedures. 

Call 813-922-2920 to schedule your appointment
All major insurances accepted.

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Not all patients need surgical intervention.  Many patients are living a heartburn free life with their PPIs. However 40% of patients taking PPIs are not getting the relief they need.  If you are one of those, you have options!  Come in and find out more. 
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