Fellowship-trained bariatric surgeon Dr. Reza Keshavarzi plans your bypass around your health history, and your pre-op labs and endoscopy can be done close to home before you come down to South Miami.
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"The doctor was very straightforward and honest and extremely professional."Pat Cutting, Google review
Where you'll be seen: 7330 SW 62nd Pl, Suite 210, South Miami, FL 33143
Roux-en-Y gastric bypass changes how much you can eat and how your body handles food once it is eaten.
Dr. Keshavarzi creates a small stomach pouch, roughly the size of an egg, and connects it directly to a lower loop of the small intestine. Food then skips most of the stomach and the first part of the small intestine.
The operation is typically performed laparoscopically, through several small incisions, under general anesthesia. Dr. K completed a fellowship in Laparoscopic, Bariatric and Robotic Surgery, and bypass is one of several bariatric operations he performs.
The new pouch holds only a few ounces, so you feel full after small portions and stay full longer.
Food bypasses the upper small intestine, which lowers the calories and fat your body absorbs.
Rerouting changes hunger and blood sugar signals, which is why bypass is often considered for patients with type 2 diabetes.
Gastric bypass is a metabolic operation. It suits adults whose weight is tied to health problems that diet, exercise and medication have not controlled, and Dr. K reviews your full history before recommending it.
If bypass is not the right tool, we also offer the gastric sleeve, low BMI sleeve, endoscopic sleeve gastroplasty, the gastric balloon and medical weight loss. Dr. K will tell you which one fits.
These are the two most common bariatric operations, and Dr. Keshavarzi performs both. The better choice depends on your reflux, blood sugar, eating patterns and medical history.
| Factor | Gastric Bypass | Gastric Sleeve |
|---|---|---|
| What changes | A small pouch is created and joined to a lower loop of the small intestine | Most of the stomach is removed, leaving a narrow sleeve |
| Absorption | Fewer calories and nutrients are absorbed | Absorption stays largely the same |
| Acid reflux | Often the preferred option for significant reflux | Usually suited to patients without major reflux |
| Type 2 diabetes | Strong metabolic effect, often favored when diabetes is significant | Also improves blood sugar for many patients |
| The operation | Two new connections and a longer procedure | One staple line and a shorter procedure |
| Vitamins | Lifelong supplements required | Lifelong supplements required |
We do not treat a bypass as a single event. Every weight loss plan here is personalized, and Dr. K combines tools when it makes sense so the weight stays off.
That can mean starting with medication, moving to surgery and leaning on nutrition support afterward. If you already take a GLP-1 injection, you stop it at least two weeks before your operation.

Dr. Keshavarzi, known to patients as Dr. K, is a board-certified surgeon with decades of experience in bariatric and minimally invasive surgery. He completed his surgical residency at Jackson Memorial Hospital and his fellowship in Laparoscopic, Bariatric and Robotic Surgery at Jackson South Medical Center.
He leads every consultation himself and stays reachable after surgery, which is the detail patients mention most often.
"He has been there for me from the beginning of my journey until now."Sherly Guillaume, Google review
"His timely communication and expert guidance were instrumental in helping me reach my health goals."Jeff De La Cruz, Google review
Our office is in South Miami, a straight drive down I-95 or Florida's Turnpike. We plan each step so much of your preparation can happen near home.
You review your health history and past weight loss attempts with Dr. K and leave knowing whether bypass, a sleeve or another option fits you.
Bypass requires medical clearances and an upper endoscopy, or EGD. Labs and exams can be done at our clinic or closer to West Palm Beach, and an EGD from the last five months is accepted.
You follow a pre-surgery diet before your operation. Surgery dates are often available within the same month once your testing is complete.
Dr. K performs your bypass in the hospital, and our team supports you through every part of the preparation and the day itself.
Many patients return to work within 4 to 7 days. You cannot lift more than 20 pounds while you heal, and your diet moves from liquids to soft foods over several weeks.
Visits through the first year track your progress, vitamins and labs, and Dr. K stays reachable directly when questions come up between visits.
A bypass works best alongside a few lifelong habits. Our diet plans and follow-up visits help you build them, one stage at a time.
Your gastric bypass price depends on your health history and the testing you need, and you receive a clear quote at your consultation.
Our surgery package covers the hospital stay, surgeon's fee, hospital-related fees and follow-up appointments for the first year. If Dr. Keshavarzi performs your EGD, the procedure is included in your overall cost and a $750 hospital fee applies.
Your price depends on your health history and the testing you need, and Dr. K's team gives you a clear quote at your consultation. Our surgery package bundles the hospital stay, surgeon's fee, hospital-related fees and first-year follow-up visits. Financing through Cherry offers 24 months at 0% interest, with monthly payments as low as $320.
You can schedule a consultation with Dr. K directly. At that visit he reviews your history and goals, and our team explains which clearances and tests come next. If your health plan has its own referral rules, we can walk you through them.
Your surgery and visits with Dr. K take place through our South Miami office. Labs, exams and your EGD can be done at our clinic or at a facility closer to West Palm Beach, and an EGD from the last five months is accepted. That keeps the number of trips down before surgery day.
Many patients return to work within 4 to 7 days. You cannot lift more than 20 pounds while you heal, and your diet moves from liquids to soft foods to regular textures over several weeks. Follow-up visits through the first year keep your recovery on track.
Avoid drinking with meals, sugary foods and drinks, carbonated beverages and grazing throughout the day. Do not skip your daily vitamins or protein goals, and hold off on heavy lifting until Dr. K clears you. Keeping your follow-up visits is one of the strongest habits you can build.
Neither operation is better for everyone. Bypass is often favored for patients with significant acid reflux or type 2 diabetes, while a sleeve is a simpler operation that suits many others. Dr. K performs both and recommends one after reviewing your history.
For many people with obesity-related health problems, surgery delivers the lasting change that diets and medication alone did not. Many of our bariatric patients write in their reviews that they wish they had started sooner. Your consultation is the place to weigh that decision with real numbers from your own health history.
Book a consultation to find out whether gastric bypass is the right next step for you.
7330 SW 62nd Pl, Suite 210, South Miami, FL 33143 · Monday to Friday, 9 am to 4 pm