Gastroparesis Specialists In St. Petersburg, FL

Most gastroparesis care in Pinellas County starts and stops at medication. That works for a while, then it doesn’t.

The St. Petersburg care path usually looks the same: a local gastroenterologist confirms delayed emptying with a gastric emptying study, starts you on dietary changes and a prokinetic like metoclopramide, and adds an anti-nausea drug for the worst days. For many people that controls symptoms. The problem comes when the medication stops working, the side effects pile up, or the nausea and early fullness never really left. At that point the question changes from “which drug” to “is the pylorus the problem, and can it be fixed.” Answering that takes a surgeon who treats the pyloric muscle directly, and those are concentrated across the bay in Tampa.

The drive is shorter than most St. Pete patients assume. From the central and northern parts of the city, Tampa Bay Reflux Institute in South Tampa is roughly 20 to 30 minutes over the Howard Frankland Bridge, closer than several escalation points patients are sometimes sent to. For a condition that drains your energy and makes daily life unpredictable, a half-hour drive to a surgeon who performs the procedure regularly is a smaller burden than months more of trial-and-error medication.

For the full picture of how gastroparesis is diagnosed and the complete range of treatments, see our main gastroparesis treatment page. This page is about getting that care from St. Petersburg specifically.

Gastroparesis is delayed gastric emptying: the stomach’s muscle contractions are sluggish or absent, so food sits there for hours longer than it should.

That backup is what produces the symptoms, including nausea, bloating, feeling full after a few bites, and sometimes vomiting food eaten hours earlier. Because those symptoms overlap heavily with acid reflux, gastroparesis is often misread as GERD, IBS, or simple indigestion, which is one reason so many patients cycle through the wrong treatments before the real diagnosis lands. In many cases the cause is never identified. Sometimes it follows diabetes or a prior surgery, and certain medications, including opioid pain relievers, some antidepressants, and some blood pressure drugs, slow the stomach and can make existing gastroparesis worse.

The practical takeaway: symptoms alone cannot confirm gastroparesis, and they cannot tell you how severe it is. That requires objective testing, which is where a proper evaluation begins.

The test that confirms gastroparesis is a 4-hour gastric emptying study, and a shorter version can miss the diagnosis.

In this study you eat a light meal containing a small amount of radioactive marker, often eggs and toast, and a scanner tracks how fast the meal leaves your stomach over four hours. A two-hour study, still used in some settings, can read as normal in a stomach that is clearly delayed at the four-hour mark. If you have already had this test in St. Petersburg, bring the actual report, because it shapes every decision that follows and can spare you a repeat.

Upper endoscopy is not how gastroparesis is diagnosed, but it often raises the suspicion. If a patient who has fasted for several hours still has food in the stomach during a scope done for other reasons, gastroparesis becomes the likely explanation. Endoscopy’s real job in this workup is to rule out a physical blockage and to check for the reflux damage that delayed emptying can cause.

Dr. Grandhige’s rule is the same one that governs his entire practice: test first, treat second. Objective confirmation comes before any discussion of a procedure, because the goal is to operate only on patients a procedure can actually help.

Dr. Grandhige performs all of his procedures at HCA Florida South Tampa Hospital, with the same operating room team, the same anesthesiologists, and his own physician assistant in every case.

This is deliberate, not a matter of convenience. He used to operate across four area hospitals and consolidated to one because outcomes in foregut procedures come from a system, not a solo surgeon. When the whole team knows the procedure intimately, equipment is set up correctly every time, operative flow is predictable, and problems get caught early rather than reacted to. For an endoscopic procedure where small technical differences carry downstream effects, that consistency is one of the strongest predictors of a smooth case.

The continuity continues after you go home. His physician assistant assists in every operation and knows your specific anatomy and recovery course, so when you call with a question you reach someone who already understands your case rather than a rotating provider. For an out-of-area patient driving in from St. Petersburg, that direct line back to the people who did your procedure removes a real source of post-procedure anxiety.