Roux-en-Y gastric bypass with fellowship-trained bariatric surgeon Dr. Reza Keshavarzi, who also performs the sleeve, ESG and gastric balloon, so your procedure is chosen for your health rather than by habit.
Gastric bypass makes the stomach far smaller and changes the path food takes through the small intestine. The most common version, Roux-en-Y gastric bypass, combines both changes in one operation.
The surgeon first divides the top of the stomach to create a pouch about the size of an egg. That pouch is then connected directly to a lower loop of the small intestine. Food skips the rest of the stomach and the first part of the intestine, so you feel full on small portions and absorb fewer calories.
The larger part of the stomach is not removed. It stays in place and keeps making digestive juices, which rejoin the food further down. The operation is performed laparoscopically, through a few small incisions, the minimally invasive approach Dr. Keshavarzi trained in during his fellowship in laparoscopic, bariatric and robotic surgery.
Patients come to our South Miami office from Coral Gables for every visit, from the first consultation to long-term follow-up.
Dr. K conducts every consultation himself and reviews your full history before recommending any procedure. Gastric bypass is most often considered for patients in these situations.
Bypass changes the gut hormones that help regulate blood sugar, so it is often weighed for patients whose weight and blood sugar are linked.
Because the new pouch makes very little acid, bypass is commonly favored over the sleeve for patients with significant reflux.
High blood pressure, sleep apnea and joint pain that improve as weight comes down are common reasons patients start the conversation.
Diet plans, exercise programs or medication helped for a while, then the weight returned.
You want a longer-term option than weekly injections and are ready to plan the switch with your surgeon.
You are prepared for a staged post-op diet, smaller meals and daily vitamins as part of everyday life.
Not sure bypass is the one? Dr. Keshavarzi also offers the gastric sleeve, a low BMI Mini Sleeve, a teen gastric sleeve program for ages 14 to 17, ESG, the ORBERA balloon and medical weight loss. Your consultation covers whichever option fits.
Book a ConsultationThese are the two operations patients ask about most. Dr. Keshavarzi performs both, so the comparison you hear in consultation is a real choice between them.
| Gastric Bypass | Gastric Sleeve | |
|---|---|---|
| How it is done | Laparoscopic surgery through small incisions | Laparoscopic surgery through small incisions |
| What changes | A small pouch is created and joined to a lower part of the small intestine | Most of the stomach is removed, leaving a narrow sleeve |
| Intestines rerouted | Yes | No |
| Stomach tissue removed | No, the larger part is bypassed and stays in place | Yes |
| Often favored when | Reflux or type 2 diabetes is part of the picture | A simpler operation without rerouting is preferred |
| Lifelong vitamins | Yes, including B12, iron and calcium | Yes, usually a lighter routine |
Two nonsurgical routes are also available. Endoscopic sleeve gastroplasty folds and stitches the stomach from inside with no incisions, and the ORBERA balloon takes up space in the stomach for a set period before it is removed.
MD, FACS, FASMBS. Board-certified bariatric surgeon
Dr. Keshavarzi, known to patients as Dr. K, is our lead surgeon and has spent decades in bariatric and minimally invasive surgery. He performs gastric bypass alongside the sleeve, the Mini Sleeve, the teen sleeve, ESG and the ORBERA balloon, and he oversees medical weight loss.
That range matters on a bypass decision. He has no reason to steer you toward one operation, and he explains openly why bypass does or does not suit your health.
Our team supports you through every part of preparation, and your surgery date moves as quickly as your pre-surgery testing does.
Dr. K reviews your weight history, medications, reflux, blood sugar and goals. You leave knowing whether bypass or another option fits, what preparation involves and what it costs.
Medical clearances and an upper endoscopy, known as an EGD, are required. Tests can be done at our clinic or an outside facility, and Dr. Keshavarzi can perform the EGD himself.
A pre-surgery diet prepares your body for the operation. Our team gives you a personalized plan and checks in as your date approaches.
Dr. Keshavarzi creates the pouch and reroutes the small intestine through small incisions. You recover in the hospital before heading home.
Many patients return to work within 4 to 7 days, and lifting over 20 lbs stays off limits early on. Dr. K confirms the timeline that fits your job and your recovery.
You move through staged diet plans and start your daily supplements. Dr. K stays reachable on his own cell phone while you recover and keeps seeing you as the weight comes off.
Your gastric bypass quote depends on your health, the testing you still need and where it is done, so Dr. K gives you an exact figure at your consultation.
Cherry is accepted for surgery. Our team walks you through financing options during your consultation.
"The doctor was very straightforward and honest and extremely professional."
Pat Cutting, Google review
"The entire team creates a welcoming and supportive environment."
Jeff De La Cruz, Google review
"He has been there the whole process, provided his cell phone to make sure he could be reached at all hours."
Yesi, Google review
Our office is at 7330 SW 62nd Pl, Suite 210, in South Miami, a short drive from Coral Gables. Your consultation, pre-surgery visits and follow-up appointments all take place there, with the same surgeon at every step.
Yes. Gastric bypass is performed laparoscopically, through a few small incisions with a camera and long, thin instruments. Dr. Keshavarzi completed a fellowship in laparoscopic, bariatric and robotic surgery at Jackson South Medical Center.
Your surgery date depends on how quickly your required tests are completed. Results from our recommended doctor come back within 48 hours, and an endoscopy done within the last 5 months is accepted. Patients who finish testing promptly can often be scheduled within weeks.
Yes. Because food bypasses part of the small intestine, gastric bypass patients take vitamin and mineral supplements for life, typically including B12, iron and calcium. Dr. K and our team set your supplement plan and check on it at follow-up visits.
Yes. Many patients move from weight loss injections to surgery for a longer-term result. The injections must be stopped at least 2 weeks before your surgery date, and Dr. K plans that timing with you.
Yes. Dr. Keshavarzi keeps in touch with patients from his own cell phone during recovery and continues to see them as they lose weight. Patients regularly mention in their reviews that he stayed with them years after surgery.
Sit down with Dr. K, compare bypass with every option he performs and leave with a plan, a quote and a clear timeline.
