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ASA specializes in advanced, minimally invasive general and bariatric surgery in Northern New Jersey


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For over 40 years, we have pioneered breakthrough bariatric and general surgical patient care in Northern New Jersey.

Bariatric & General Surgery in New Jersey

Welcome to Advanced Surgical Associates

Welcome to ASA, a premier bariatric (weight loss) surgery and general surgery practice in New Jersey. We offer effective and advanced surgical techniques for those in need of intervention for diseases including obesity and other abdominal disorders. The surgeons at ASA are some of the most experienced in their field, leading programs at major hospitals in the area, including Overlook Medical Center and Trinitas Regional Medical Center.

Because of the dedication of our surgeons, Dr. Muhammad FeteihaDr. Joao LopesDr. James Lopes and Dr. John Pepen as well as the experience of our staff, our scope is significant.

Our Commitment to Patient Care

We treat our patients with the utmost in compassionate care, ensuring that their needs are addressed. We are committed to spending time with our patients, answering their questions, and putting them at ease during a time that can often feel overwhelming.

Both our weight loss surgery and general surgery programs are focused on safety, results and patient care. We would love to hear from you.

bsristric surgery

Bariatric / Weight Loss Surgery

Bariatric surgery is currently the only long-term effective option for patients suffering from morbid obesity and the myriad associated comorbidities. Our surgeons have vast experience in gastric sleeve and gastric bypass procedures using the latest in minimally invasive technology.

Our weight loss surgery program is focused on safety, results and patient care. And we remain by your side long after your procedure is over, providing support through monthly group meetings and open communication for any questions or concerns you may have.

Click here to learn more about bariatric surgery


Procedure Spotlight - Hernia Surgery

Hernia repairs are one of the most commonly performed general surgery procedures in the United States and around the world. We perform hernia surgery using safe and effective laparoscopic surgical techniques

Hernia surgery requires specialized knowledge and experience to ensure each patient receives the very best outcomes while minimizing potential risks.

Click here to learn more about hernia repair surgery.

Advanced Surgical Associates is one of the first exclusively surgical groups practicing in Union County New Jersey. And that is just the first of many firsts for ASA. For over 40 years, we have pioneered breakthrough surgical patient care in North Jersey in both general and weight loss surgery. ASA also offers gastric bypass, gastric sleeve and gastric banding to those suffering from obesity in New Jersey.

Our Surgeons

© 2020, Advanced Surgical Associates, Bariatric & General Surgery, Springfield, New Jersey