Bariatric Surgery Maryland | Top Rated Bariatric Surgeons Baltimore

Advanced Weight Loss Surgery in Maryland

Bariatric Surgery in 3 Steps


Are you eligible for bariatric surgery?

If you have a Body Mass Index (BMI) ≥ 40 or are more than 100 pounds overweight you could be a candidate for bariatric surgery.



What is bariatric surgery?

Learn more about weight loss surgery and the types of procedures.



Ready to take the next step? Begin at home!

Attend a free webinar and schedule a virtual visit with a surgeon, dietitian and psychologist.



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If you have a Body Mass Index (BMI) of 40 or above or are more than 100 pounds overweight – or if you have a BMI of at least 35 with two obesity-related illnesses such as type II diabetes or sleep apnea – you may be a candidate for bariatric surgery. Research published in the Journal of the American Medical Association (JAMA) and elsewhere indicates that weight loss surgery may be the most effective method for losing weight and keeping it off for those with a chronic history of obesity who have tried and failed other methods to control their obesity.

Bariatric surgical procedures include those that cause weight loss by restricting the amount of food the stomach can hold, those that cause weight loss primarily as a result of malabsorption of nutrients, and those that cause weight loss both by gastric restriction and malabsorption. Most bariatric procedures today are performed using minimally invasive techniques (laparoscopic surgery).

Dr. Andrew Averbach, Dr. Isam Hamdallah and their surgical team offer the  safest and most effective primary bariatric surgical procedures, as well as revision bariatric surgery:

Roux-en-Y Gastric Bypass

Sleeve Gastrectomy

Each of these procedures offers risks and benefits, and Drs. Averbach and Hamdallah will work with you individually to ascertain which surgical weight loss solution is right for you.

We pride ourselves on not only providing technical expertise and surgical knowledge, but a comprehensive program which answers all of the emotional and psychological needs of a bariatric patient as well.  Our bariatric program offers:

High Standards

Education & Prevention

Uncompromising Safety

Unparalled Expertise

A Positive Experience

Extensive Support

We thank you for allowing us to be a part of your weight loss journey and look forward to helping you make your dreams a reality!

How Do I Calculate My BMI (Body Mass Index)?

Body Mass Index (BMI) is a medical indicator based upon the height and weight of adults, 20 years and older.  To compute your BMI, enter your height and weight then click the “Find your BMI” button.




BMI Categories:

Under 18.5 Underweight Minimal
18.5 – 24.9 Normal Weight Minimal
25 – 29.9 Overweight Increased
30 – 34.9 Obese High
35 – 39.9 Severly Obese Very High
40 and Over Morbidly Obese Extremely High
50 and Over Mega Obese Extremely High
60 and Over Mega-Mega Obese Extremely High


Our Bariatric Specialists

DR. AVERBACH - Board Certified General & Bariatric Surgeon

Dr. Averbach

A native of Moscow, Russia, Dr. Andrew Averbach is a board certified general and bariatric surgeon with more than 30 years of experience. Dr. Averbach has performed more than 3,500 weight loss procedures since 2002, and they have been safe, effective, and helped people change their lives and transform their lives for good.


DR. HAMDALLAH - Bariatic & General Surgeon

Dr. Hamdallah

Dr. Isam Hamdallah earned his medical degree at the Jordan University of Science and Technology (JUST) School of Medicine in 2000. A native of Amman, Jordan, he continued his education and training as a surgical resident in various rotations in the United Kingdom.


Maryland Bariatrics & Laparoscopic Surgeons

Find Out More About Bariatric Surgery



Saint Agnes offers online seminars which also fulfil the requirement to begin pursuing minimally invasive laparoscopic bariatric surgery through our program.

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Meet Us

Meet Us

Dr. Hamdallah and Dr. Averbach joined the Saint Agnes Bariatric Surgery Center in 2002, and have since performed more than 4,000 bariatric procedures.

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Contact us today to find out if our treatments can help you reach your optimal health, or to schedule an appointment.

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Frequently Asked Questions About Bariatric Weight-Loss Surgery

How Long After Bariatric Surgery Will I Have to be Out from Work?

With any bariatric procedure performed laparoscopically you are expected to recover fully to any occupation with four weeks. If you have a desk job, you are likely to be able to return to work earlier. If your job is physically demanding and requires heavy lifting or physical activity, a longer period off work may be necessary. If there are questions, patients should consult with their surgeons.

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When Can I Start Exercising Again After Surgery?

Walking is encouraged as early as the first evening after surgery and, thereafter on a regular basis to increase your physical activity level. Aerobic activities such as brisk walking, stationary biking, elliptical machines, etc. may be engaged almost immediately after surgery and are limited generally by the degree of discomfort that these activities cause. You may engage in swimming once your surgeon has determined that the wounds have healed sufficiently. Activities that are more strenuous or that involve lifting weights are generally discouraged for four weeks after surgery. This will vary by patient, and Drs. Averbach and Hamdallah will create a personal plan which is right for you.

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Will I Have to Take Vitamins and Minerals After Surgery and Will My Insurance Pay for These?

Vitamin and mineral supplements are necessary in the weight-loss period and certain vitamin/mineral supplements are needed life-long, depending upon the type of surgery you have. Insurance typically does not pay for vitamin and mineral supplements. However, you can pay for vitamins and minerals out of a flex medical account, which is a pre-tax account from your income that can be used for medical expenses.

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Will I Have to Diet or Exercise After the Procedure?

Bariatric surgery is just a tool that will enable you to lose weight. Although surgery does produce changes in your body that help with the initial weight-loss, for maintenance of the weight-loss it is ultimately up to you to make lifelong changes in diet and lifestyle in order to be successful. This includes making right food choices, controlling portions, taking vitamin and mineral supplements as directed, getting plenty of fluid, rest and regular exercise. In addition, sufficient sleep and stress control may help to improve long-term weight-loss success and maintenance. Without these lifelong changes weight regain is likely to occur.

Our bariatric care team includes support from a monthly in-person support group, online support, personalized guidance from dietitians and lifestyle coaches.

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In Affiliation with Saint Agnes Healthcare


For more than 150 years, Saint Agnes Hospital has been dedicated to the art of healing by providing exceptional care to the greater Baltimore area. Built on a strong foundation of excellent medical care and compassion, Saint Agnes is committed to providing the best care for our patients for many years to come.