BOCA RATON, FLORIDA
We perform the specialized testing that identifies exactly what's happening inside the gut, HREM, wireless motility capsule studies, breath testing, and anorectal manometry, for referring physicians and patients alike.
A testing center built around one job: precise answers about how the gut is functioning.
Many gut symptoms, bloating, reflux, irregular bowel habits, have several possible underlying causes that look similar from the outside. GI Diagnostics performs the specialized testing that tells them apart, using assessments not widely available elsewhere in South Florida. Every study is read and interpreted by our clinical team, then returned to you and, with your permission, to your referring physician.
We are currently accepting new patients, by physician referral or direct inquiry. Most major insurance plans are accepted, and our team can help you understand your coverage before your visit.
The testing we perform, and why it matters.
Every assessment is clinically validated and drawn from the tools used in academic gastroenterology. Which combination applies to you is determined during intake.
Measures the gases produced by bacterial fermentation, distinguishing hydrogen-dominant, methane-dominant, and mixed presentations that call for different approaches.
Identifies which substrates the small intestine processes poorly and at what threshold, replacing guesswork and elimination diets with objective data.
Tracks the full arc of digestive transit from ingestion to exit, distinguishing presentations that look identical on the surface but require different treatment.
Maps muscular mechanics in real time, capturing pressure events that imaging and breath testing cannot see.
If you're dealing with bloating, reflux, or a change in bowel habits, these are among the most common reasons patients come to us for testing.
Each of the following can have several distinct underlying causes. Testing is how we tell them apart.
We perform the testing. You keep the patient relationship.
GI Diagnostics exists to extend the diagnostic capacity of your practice, not to compete with it. When a workup calls for a level of specialized testing your practice or the hospital schedule can't easily accommodate, we handle that piece and send a complete report back to you for treatment.
Information for referring physicians →Hospital-grade motility and diagnostic testing, in a private studio setting.
GI Diagnostics was founded to bring the same testing used in academic gastroenterology into an unhurried, private studio in Boca Raton. Every study is performed and interpreted personally by our clinical team.
Dr. Nathanson is a physician-scientist whose career has centered on one question: what is the gut actually doing, and how do we measure it with precision? As Director of the NIH-funded Yale Liver Center and former Chief of Digestive Diseases at Yale School of Medicine, he has spent decades translating complex biological research into clinical standards — and defining what rigorous GI medicine looks like in practice.
GI Diagnostics was built on a single conviction: the diagnostic rigor of academic gastroenterology does not belong only in a hospital. Every assessment deployed here, every protocol selected, every report produced reflects a framework developed and verified to the standards of the NIH and the world's leading GI research institutions.
Janylet's clinical foundation was built in one of the most demanding environments in medicine: organ transplant coordination at Yale New Haven Health, where diagnostic precision is not a preference — it is the only acceptable standard. As a Certified Clinical Transplant Coordinator, she managed the full clinical arc of the most complex biological presentations in modern medicine.
At GI Diagnostics, she leads every patient engagement from intake through results. Her background in high-acuity care coordination is, in practice, a background in not letting anything go unnoticed.
All assessments are overseen by licensed clinicians. Information on this site is provided for general and educational purposes and does not by itself constitute a clinical diagnosis or establish a physician-patient relationship.
"I'd had years of questions and a folder of bloodwork that never gave me answers. The testing here finally showed exactly what was happening."
"Every previous test came back inconclusive. The breath testing here was the first result that actually explained what my body had been doing for three years."
"My gastroenterologist referred me for motility testing that isn't available anywhere else nearby. The report went straight back to my doctor and we finally had a plan."
Yes. We accept most major insurance plans for referred and self-referred testing. Our team verifies your benefits before your visit and can help you understand your coverage.
No. We welcome direct inquiries as well as physician referrals. A brief intake consultation determines which testing is appropriate for your symptoms.
Most assessments are completed in a single studio visit of two to four hours. Breath testing requires a fasted state and takes roughly three hours. The wireless motility study spans several days as the capsule moves through your system, with no additional clinic time required during that period.
Yes, specific requirements vary by test. Breath testing requires dietary restrictions and a fasting period beforehand. Your clinical team will provide a preparation guide well in advance of your visit.
Your results are compiled into a clear, structured report, typically within one to two weeks. If you were referred by another physician, a copy is sent directly to them as well.