Northwest Houston Surgical Association

  • Experience Matters

    Meet Dr.Leiva, Dr.Amr and Dr.Ayyar.

    Your surgeons at NHSA.

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  • Big Change Happening In Small Spaces

    Discover Robotic Surgery and other minimally invasive surgical techniquies.

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  • You Have Options

    Learn about Bariatric Surgery and other procedures available to you.

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  • Life After Bariatric Surgery

    What do I need to be successful after surgery?

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Meet our doctors

  • dr-fadner

    Dr. Fadner

    Dr. Fadner is fellowship trained in Advanced Minimally Invasive Surgery and Bariatric Surgery and offers a wide range of general surgery operations to his patients.






  • Dr. Leiva, Houston weight loss surgeon

    Dr. Leiva

    A certified General Surgeon at the forefront of single incision and robotic general surgery. Dr. Leiva also has a special interest in primary and revision, advanced laparoscopic.






  • Dr. Amir

    Dr. Amr

    As a highly skilled and fellowship trained weight loss surgeon, Dr. Amr is skilled in laparoscopic foregut surgery and bariatric (weight loss) surgery.






  • Dr. Ayyar

    Dr. Ayyar

    Dr. Ayyar has pioneered minimally invasive surgery in the West and Northwest Houston area. His expertise in minimally invasive and endocrine surgery allow him to perform parathyroid operations.






Weight Loss Surgery – Houston, TX

Gastric Bypass, LAP-BAND, Gastric Sleeve & Other Options


Welcome to the website of the Northwest Houston Surgical Association. If visiting this website is your first step towards the physically, mentally and emotionally healthy life you deserve, then congratulations. Every day we work with the men and women of Houston and Cypress, Texas that are ready to achieve and maintain a healthy weight and truly enjoy their lives. We understand that the journey toward surgical weight loss and bariatric surgery might feel overwhelming, but our talented surgeons and caring staff are here to make it easier for you.

When you meet with our staff for a consultation about medically supervised weight loss or weight loss surgery in Houston or Cypress, we will carefully consider what will help you attain the best possible outcome for you, your lifestyle, and your goals. Sometimes, this is weight loss surgery, such as gastric bypass, LAP-BAND, sleeve gastrectomy, or duodenal switch. Other times, a carefully supervised diet and exercise program is just what a patient needs to kick-start a healthy, active life.

We will work tirelessly to educate patients on their weight loss options, including bariatric surgery, until we have found the treatment and care path that is ideal for each individual patient we see. Request a consultation online or call our office at 713-230-8347 for more information about how you can take the steps toward improving your life.

Insurance Information for Weight Loss Surgery

After their health and well-being, one of the main concerns of our patients is insurance for bariatric surgery. Our staff at the NHSA will work tirelessly with you to get insurance coverage for your weight loss surgery, educating you on the steps we need to take, the information your insurance company will want to see, the follow-up process to ensure we are being persistent, and anything else we can do to help ensure you receive coverage for this very necessary surgical procedure.

Consider Your Weight Loss Surgery Options

Weight loss surgery is an important, life-altering decision. Let the professionals at NHSA help select the option that is right for you. Click below to learn more about our surgical weight loss procedures.