What is the typical BMI requirement for bariatric surgery?

General guidelines from the NIDDK suggest that adults with a BMI of 35 or higher who have not been able to lose weight through other methods may be candidates. Adults with a BMI of 30 to 35 who have hard-to-control type 2 diabetes may also qualify. Your surgeon reviews your full health history to decide what is right for you.

Do I need a referral to schedule a bariatric surgery consultation in Los Angeles?

Some insurance plans require a referral from a primary care doctor before they will cover a bariatric surgery consultation. Check with your insurance plan before scheduling. Even without a referral requirement, talking with your primary care doctor first can help you gather important medical records to bring to the appointment.

Can gastric sleeve surgery be reversed?

No. According to MedlinePlus, the gastric sleeve procedure cannot be reversed once it has been done because part of the stomach is permanently removed. If reversibility is important to you, ask your surgeon to explain all available options in detail during your consultation.

What should I do if I feel seriously unwell after bariatric surgery?

Mild discomfort is common after surgery, but serious symptoms such as severe abdominal pain, chest pain, difficulty breathing, or high fever require immediate attention. Call 911 or go to the nearest emergency room right away if you experience these symptoms. Do not wait to see if they improve on their own.

How to Prepare for a Bariatric Surgery Consultation in LA

2026-11-06 · By Weight Loss Surgeon LA Editorial · General information, not medical advice

A step-by-step guide to preparing for your first bariatric surgery consultation in the Los Angeles area, so you can walk in informed and ready to ask the right questions.

What Is a Bariatric Surgery Consultation?

A bariatric surgery consultation is your first formal meeting with a surgeon who specializes in weight-loss procedures. During this visit, the surgeon reviews your medical history, discusses your health goals, and helps you understand which options may fit your situation. You are not committing to anything at this appointment. It is simply a chance to get information and ask questions.

Weight-loss surgery, also called metabolic and bariatric surgery, helps people lose weight by making changes to your digestive system. Some procedures make the stomach smaller, so you feel full sooner. Others change the small intestine to reduce how many calories the body absorbs. For many people in the Los Angeles area, understanding these basics before the consultation makes the conversation with the surgeon much more productive.

Who May Be a Candidate?

Knowing general eligibility guidelines can help you walk into your consultation with realistic expectations. According to the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), people with a BMI of 35 or higher who have not been able to lose weight through diet and exercise alone may be considered for surgery. People with a BMI of 30 to 35 who have type 2 diabetes that is difficult to control may also qualify. Your surgeon decides whether you are a good candidate based on your full medical picture.

Weight-loss surgery may also be an option if you have serious health problems related to obesity, such as type 2 diabetes or sleep apnea. No outcome is promised, and eligibility depends on many personal factors specific to you.

Want more information? Read our plain-language procedure guides or send an information request. We do not give medical advice.

Procedure guides · Request information

What to Bring to Your Consultation

Coming prepared helps you and the surgeon make the most of your time together. Consider bringing:

A list of all medications and supplements, including doses and how often you take them.
Past medical records, including lab results, imaging, or notes from other doctors related to obesity or any related conditions.
Insurance information, so the office staff can help you understand what documentation your plan may require.
A written summary of diets or programs you have tried, including how long you followed them and what happened.
A support person, such as a family member or friend, who can help you remember information discussed during the visit.

In California, you have the right to verify that any surgeon holds a valid state license. You can check a surgeon's license on the Medical Board of California website at mbc.ca.gov.

Questions to Ask the Surgeon

Preparing questions in advance helps you leave the consultation feeling informed. Here are some questions many people find useful:

Which type of surgery do you think may fit my situation, and why?
What are the risks and possible side effects for each option?
What changes to diet and lifestyle will I need to make after surgery?
What does the follow-up care process look like?
What pre-surgery steps, such as lab tests or nutritional counseling, will be required?
How does your team support patients who face emotional or behavioral challenges related to eating?

Understanding the Common Procedure Options

In the United States, the three most commonly performed weight-loss surgeries are the gastric sleeve, gastric bypass, and adjustable gastric band. A fourth option, biliopancreatic diversion with duodenal switch, is used less often. Your surgeon explains the differences and helps you understand which may be appropriate for your situation. No single surgery works best for everyone, and the choice depends on many factors, including your health history, BMI, and personal preferences.

Important: some procedures, such as gastric sleeve surgery, cannot be reversed once completed because part of the stomach is permanently removed. Ask your surgeon to explain what is permanent and what is not before making any decision.

Know the Risks

All surgery carries risk. General surgical risks include bleeding, infection, blood clots, and reactions to anesthesia. Risks specific to bariatric procedures may include leaking at surgical staple lines, nutritional deficiencies, heartburn, gallbladder problems, and in some cases the need for a second operation. Your surgeon discusses your personal risk level during the consultation.

If you experience severe abdominal pain, difficulty breathing, chest pain, or signs of infection after any procedure, call 911 or go to the nearest emergency room right away.

After the Consultation

Once your consultation is done, take time to review any materials the office provides. Consider a second opinion if you feel uncertain, and discuss your options with your primary care doctor. Many bariatric programs in the Los Angeles area require additional steps, such as nutritional evaluations or psychological assessments, before surgery is scheduled. Following through with these steps is a normal and expected part of the process.

Frequently asked questions

What is the typical BMI requirement for bariatric surgery?: General guidelines from the NIDDK suggest that adults with a BMI of 35 or higher who have not been able to lose weight through other methods may be candidates. Adults with a BMI of 30 to 35 who have hard-to-control type 2 diabetes may also qualify. Your surgeon reviews your full health history to decide what is right for you.
Do I need a referral to schedule a bariatric surgery consultation in Los Angeles?: Some insurance plans require a referral from a primary care doctor before they will cover a bariatric surgery consultation. Check with your insurance plan before scheduling. Even without a referral requirement, talking with your primary care doctor first can help you gather important medical records to bring to the appointment.
Can gastric sleeve surgery be reversed?: No. According to MedlinePlus, the gastric sleeve procedure cannot be reversed once it has been done because part of the stomach is permanently removed. If reversibility is important to you, ask your surgeon to explain all available options in detail during your consultation.
What should I do if I feel seriously unwell after bariatric surgery?: Mild discomfort is common after surgery, but serious symptoms such as severe abdominal pain, chest pain, difficulty breathing, or high fever require immediate attention. Call 911 or go to the nearest emergency room right away if you experience these symptoms. Do not wait to see if they improve on their own.

Sources

General information only. This article is not medical advice, and reading it does not create a doctor-patient relationship. This website is informational, is not a medical practice and names no doctor. Talk to a licensed physician about your own care. In an emergency call 911.