Hialeah patients work with one surgeon, Dr. Reza Keshavarzi, from the first consultation through surgery and every follow-up visit after it.
Gastric bypass, most often done as a Roux-en-Y bypass, changes both how much you can eat and how your body handles food. Dr. K performs it as a minimally invasive operation through small incisions, using the laparoscopic and robotic techniques of his bariatric fellowship.
The top of the stomach is divided into a pouch roughly the size of an egg. It fills quickly, so portions shrink and fullness arrives sooner.
The pouch is connected to a lower loop of the small intestine. Food skips the rest of the stomach and the first stretch of intestine, so fewer calories are absorbed.
Rerouting food shifts the gut hormones that drive appetite and blood sugar. That effect is why bypass is often discussed for patients with type 2 diabetes.
No part of your stomach is removed. Unlike the gastric sleeve, the bypassed stomach stays in place and keeps producing the digestive juices your intestine still needs.
Dr. K performs every weight loss procedure we offer, from the ORBERA gastric balloon to gastric bypass. Because no single operation is the default here, your recommendation follows your health.
When it improves your odds of keeping the weight off, he pairs surgery with GLP-1 medication, nutrition coaching and long-term follow-up.
Our approach: the right treatment, or the right combination of treatments, for each patient.
| Procedure | How it works | Often considered for |
|---|---|---|
| Gastric Bypass This page | A small stomach pouch joined to a lower part of the small intestine, limiting both portions and absorption. | Ongoing acid reflux, type 2 diabetes, or a larger amount of weight to lose. |
| Gastric Sleeve | Most of the stomach is removed, leaving a narrow sleeve. The intestines are not rerouted. | Significant weight loss with a simpler change to the anatomy. |
| Low BMI Mini Sleeve | A sleeve procedure planned for patients with less weight to lose. | Excess weight below the usual range for bariatric surgery. |
| Endoscopic Sleeve Gastroplasty | Sutures placed through an endoscope reduce the stomach from the inside, with no incisions. | Patients who prefer a nonsurgical procedure. |
| ORBERA Gastric Balloon | A temporary balloon in the stomach takes up space so you feel full sooner. | A nonsurgical start for a moderate amount of weight. |
| Medical Weight Loss | A personalized plan that can include weight loss injections, nutrition and exercise guidance. | Patients not ready for a procedure, or support before and after surgery. |
Bypass is a bigger change than the sleeve, so Dr. K recommends it when its particular strengths match your health. Your history, medications and goals decide the procedure.
That decision is made together, and you leave your consultation knowing which option he recommends and why.
MD, FACS, FASMBS. Board-certified bariatric surgeon.
Dr. Reza Keshavarzi, known to patients as Dr. K, brings decades of experience in bariatric and minimally invasive surgery. He trained in surgery at Jackson Memorial Hospital, then completed a fellowship in laparoscopic, bariatric and robotic surgery at Jackson South Medical Center.
After surgery, patients reach him on his own cell phone, a detail our reviewers bring up often.
In this short interview filmed in his office, Dr. K answers the questions patients ask most before surgery, so you can hear how he explains things before you meet him.
Our team supports you through each step. How soon you reach a surgery date depends mostly on how quickly your pre-op testing is completed.
Dr. K reviews your history and goals, explains whether bypass or another option suits you better, and walks you through costs and financing.
You complete medical clearances and an upper endoscopy, or EGD. Dr. K can perform the EGD, or a recent one from elsewhere may be used.
You follow a pre-surgery diet. Weight loss injections are stopped at least two weeks before your surgery date.
Dr. K performs your bypass through small incisions, followed by a short hospital stay while you start sipping liquids and walking.
Regular visits track your weight, diet stages, supplements and lab work, with Dr. K involved long after surgery day.
A quick nutrition tip from Dr. K for eating out.
Recovery follows a set sequence, and the diet plans on our website walk you through each stage of eating again.
You walk soon after surgery and take small, frequent sips of clear liquids. Most patients go home after a short hospital stay.
Most patients return to work within 4 to 7 days. Avoid lifting anything heavier than 20 pounds while you heal.
Your diet moves from protein shakes and liquids to purees and then soft foods, with protein first at every meal.
Regular foods return in small portions. Daily movement and follow-up visits become part of your routine for life.
★★★★★"From my 1st visit he made me feel at ease with my decision to pursue bariatric surgery."
YesiGoogle review
★★★★★"The doctor was very straightforward and honest and extremely professional."
Pat C.Google review
★★★★★"His timely communication and expert guidance were instrumental in helping me reach my health goals."
Jeff D.Google review
4.9 out of 5 from 80 Google reviews
Your gastric bypass price is confirmed at your consultation, once Dr. K has decided bypass is the right procedure for you. We explain what your quote covers before you commit.
When Dr. K performs your pre-op endoscopy, the procedure itself is included in your surgical cost, with only the hospital fee billed separately.
Plans available with 24 months at 0% interest
Apply with Cherry to spread the cost of surgery into monthly payments.Approval is a medical decision Dr. K makes with you at your consultation. He weighs your weight history, related conditions such as diabetes or reflux, past weight loss attempts and your readiness for lifelong follow-up. Once he recommends bypass, the clearances, endoscopy and pre-surgery diet described above prepare you for a surgery date.
For many patients, the value is measured in health as much as in pounds, because bypass is often chosen to improve conditions such as type 2 diabetes, acid reflux, high blood pressure and sleep apnea. It is also a lifelong commitment to vitamins, protein goals and follow-up. Dr. K will tell you honestly whether bypass, another procedure or a nonsurgical plan gives you the better trade-off.
There is no fixed timeline. The pace depends on your starting weight, your health and how closely you follow the diet and activity plan. Weight usually comes off fastest in the first months after surgery and then slows, and Dr. K tracks your progress at each follow-up visit.
Dr. K performs bypass through several small incisions rather than one large opening. These small scars usually fade over the months after surgery, and how they heal varies from person to person.
Yes. Because food skips part of the small intestine, your body absorbs fewer vitamins and minerals, so daily supplements are part of life after bypass. Regular follow-up visits and lab work help keep your levels where they should be.
Hialeah patients are seen at our South Miami office on SW 62nd Place for consultation, pre-op planning and every follow-up visit after gastric bypass.
