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Meet the doctor

Dr. Calin is a general and bariatric surgeon. His expertise includes complex general and bariatric (weight loss) procedures, hernia, colon surgery, heartburn, acid reflux, gallbladder diseases, and other conditions. He practices surgery through a minimally invasive approach, laparoscopic and robotic surgery. He is one of the early adopters of robotic technology, and he had been using the da Vinci Robotic system for a long time, early after its implementation. Furthermore, he has numerous publications in this field, and he was designated to be a proctor for robotic surgery, sharing his experience with other surgeons who are willing to learn this technology. He is a fellow of the American Society of Metabolic and Bariatric Surgery and has extensive expertise in bariatric surgery. He was the first surgeon to perform the single anastomosis duodenal switch procedure (a relatively new and very efficient weight loss procedure) at Mountainside Hospital, one of the hospitals where he currently performs bariatric surgery. He also performs sleeve gastrectomy, gastric bypass surgery, and revision bariatric procedures. Patients who already had bariatric surgery, but struggle with weight regain, reflux, heartburn, or other conditions are welcome to his office to discuss their options. Dr. Marius Calin MD FACS FASMBS - BIO read more

Meet the team:

Welcome to NEW JERSEY WEIGHT LOSS DOCTORS, one of the largest general and bariatric surgery private practices, well-established and respected in New Jersey. The group's highly specialized board-certified general and bariatric surgeons have been caring for north and central jersey s communities for decades and their involvement and dedication have always led to high-quality results and incredible experiences both for the healthcare provider collaborators and the wonderful patient population that we treated.

Dr. Karl Strom

Dr. Silvia Fresco

Dr. Kevin Bain

Dr. Jonathan Reich

Dr. Richard Greco

Dr. Juan Lujan

Dr. James Nangeroni

Dr. Robert Barbalinardo

Dr. Joseph Barbalinardo

Services

Surgical weight loss - Reflux, and heartburn - Hernia surgery - Gallbladder surgery - Colon surgery - Colonoscopy - Robotic surgery

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WEIGHT LOSS SURGERY

SLEEVE GASTRECTOMY ✱ GASTRIC BYPASS ✱ GASTRIC BAND 

DUODENAL SWITCH ✱ SINGLE ANASTOMOSIS DUODENO ILEAL BYPASS (SADI-S)

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REVISION OF PREVIOUSLY FAILED BARIATRIC SURGERY PROCEDURES

RE-SLEEVE

SLEEVE TO BYPASS

SLEEVE TO DUODENAL SWITCH - SLEEVE TO SADI

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HEARTBURN

ANTI-REFLUX SURGERY ✱ HIATAL HERNIA REPAIR ✱ NISSEN FUNDOPLICATION ✱ UPPER GI ENDOSCOPY

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HERNIA SURGERY 

INGUINAL, UMBILICAL, VENTRAL, AND OTHER TYPES OF HERNIAS

RECURRENT HERNIAS AFTER FAILED PRIOR REPAIR

INCISIONAL HERNIAS THAT OCCURRED AFTER PREVIOUS SURGERIES

COMPLEX LARGE HERNIA REPAIR WITH ABDOMINAL WALL RECONSTRUCTION

HERNIA REPAIR WITH OR WITHOUT MESH 

ROBOTIC HERNIA SURGERY

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GALLBLADDER SURGERY 

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COLON SURGERY 

SCREENING COLONOSCOPY AND ENDOSCOPY

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OTHER GENERAL SURGERY PROCEDURES ✱ LIPOMAS ✱  CYSTS ✱ LUMPS AND BUMPS

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ACUTE CARE SURGERY

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ROBOTIC AND LAPAROSCOPIC SURGERY

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