Marius Calin, MD

  • Bariatric Surgery


Dr. Marius 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.

If you only have a small simple umbilical or groin hernia,  multiple complex hernias of the abdominal wall, or if you are a patient who had failed multiple hernia surgeries, doctor Calin welcomes you to discuss your options, and he is ready to offer his extensive expertise that covers this pathology. Using laparoscopic or robotic or open technology combined with the latest reinforcement materials on the market, he offers a state-of-the-art hernia repair to his patients. He is also one of the early adopters of the minimally invasive extraperitoneal repair (ETEP procedure), being the first surgeon to perform this procedure in several of the hospitals where he had appointments. This is a relatively new procedure that offers selected patients the advantages of a minimally invasive (keyhole surgery) approach combined with a durable reinforcement of the abdominal wall in order to prevent hernia recurrence.

By taking advantage of the laparoscopic and robotic platform combined with his extensive experience, he manages to treat and operate with minimal incisions on different acute surgical conditions that bring the patient to the emergency room. Thanks to this revolutionary technology, he is happy to offer to more and more patients that require colon surgery, the benefit of having surgery without colostomy (the bag) and recovery much earlier than before.

With his training and expertise in advanced gastrointestinal surgery and endoscopy, he offers his patients colonoscopy and endoscopy for cancer screening, or other conditions as well as endoscopic balloon dilatation and stenting.

His patients highly rate him, and he did his training both overseas (Europe and Canada) and at prestigious hospitals in the United States (New York, Indianapolis, Cleveland Clinic). Dr. Calin is certified by the American Board of Surgery, and he is a Fellow of the American Society of Metabolic and Bariatric Surgery. Dr. Calin was also nominated multiple times for NJ Top Docs. He is also appointed as an assistant professor of surgery at Hackensack Meridian School of Medicine at Seton Hall University.

His endeavor for perfection and precision is also reflected in his hobbies. He is an experienced pilot and currently holds a commercial pilot and certified flight instructor certificates issued by the Federal Aviation Administration. But foremost, he is a compassionate doctor, and he is dedicated to his patients. He welcomes any patient who is in need of an expert surgeon ready to treat their conditions.


Advanced Gastrointestinal, Minimally Invasive Surgery and Endoscopy Saint Vincent Hospital Indianapolis - Fellowship

Cleveland Clinic Metabolic and Bariatric Institute - Fellowship

Bronx Lebanon Hospitalaffiliated With Albert Einstein College Of Med - Residency



Hospital Affiliations:

Hackensack Meridian Health Bayshore Medical Center, NJ
Hackensack Meridian Health Southern Ocean Medical Center, NJ
Hackensack Meridian Mountainside Medical Center, NJ
Raritan Bay Medical Center, NJ


American Board of Surgery

Certified in Surgery


Short Term Outcomes of Laparoscopic Colorectal Resection in Psychiatric Population: A Multicenters Retrospective Study in Japan

Robotic Multi-Visceral Resection for Pancreatic Neuroendocrine Tumor with Liver Metastasis

Does Endoscopic Ultrasound Scope Design Influence Duodenal Perforation Rate?

The First Case Report of Robotic Multivisceral Resection for Synchronous Liver Metastasis from Pancreatic Neuroendocrine Tumor: A Case Report and Literature Review

Large Sized Left Inferior Phrenic Artery and Parahiatal Type of Diaphragmatic Hernia Generating Confusion During Robotic Surgical Repair.

Repair of Morgagni Hernia in Adults with Primary Closure and Mesh Placement: First Robotic Experience.

Robotic Hepaticoduodenostomy for Reconstruction After Resection of Choledocal Cyst

Closed Duodenal Duplication Cyst Involving the Major Duodenal Papilla Versus Ampullary Choledochocele

Large sized left inferior phrenic artery and parahiatal type of diaphragmatic hernia generating confusion during robotic surgical repair

Laparoscopic Versus Open Surgery in Patients with Psychiatric Comorbidity: A Retrospective Study at the Largest Psychiatric Center in Japan

Cytoreductive Surgery (CRS) and Heated Intraperitoneal Chemotherapy (HIPEC) in the Management of Peritoneal Carcinomatosis in a Community Setting

Robotic Repair or Morgagni Hernia in Adults with a Primary Closure and Mesh Placement

A rare cause of small bowel obstruction due to bezoar in a virgin abdomen

Successful Robotic Cystogastrostomy after Failed Endoscopic Drainage for Infected Pancreatic Fluid Collection Post Distal Pancreatectomy.

Specimen extraction after laparoscopic sleeve gastrectomy.

Patient perception of ideal body weight and the effect of body mass index.

Specimen Extraction After Laparoscopic Sleeve Gastrectomy: Simple is Better How We Do It

Specimen extraction after laparoscopic sleeve gastrectomy. Simple is better

Superior Vena Cava Syndrome After Video Assisted Mediastinal Lymph Node Dissection

Intrapulmonary thymoma: A case report and review of the literature

A Method for Preparing of Gastric Substitute in Esophageal Surgery. Personal Attitude

Single Team Results with the Single Layer, Interrupted, Manually Sewn Esophageal Anastomosis

A Particular Case of Retroperitoneal Tumor. Case Report

Esophageal Cancer. Postoperative Results from a Center with Low Volume of Esophageal Surgery

Pancreatic Abscess a Complication of Acute Necrotizing Hemorrhagic Pancreatitis

Results in Complicated Colorectal Cancer Surgery

Retroperitoneal Dermoid Cyst. Case Report

The Evolution of the Remnant Cavity After Hydatic Cyst Surgical Excision. Ultrasound Monitoring

Double Cardiac Wound - Case Report

Thrombectomy for Saphenofemoral and Saphenopopliteal Junctions for Venous Thrombosis

One Year of Severe Polytrauma: Where Do We Stand?

Hydatic Cysts with Multiple Localizations. Surgical Management

Lipomas with Particular Localization. Diagnostic and Therapeutic Difficulties

Colorectal Cancer. Emergency Therapeutic Attitude

Long Time Functionality of Bypass and Esophageal Reconstruction for Esophageal Tumour

Multiple Concomitant Surgical Interventions. Early Postoperative Results

Traumatic Rupture of Superior Mesenteric Artery and Vein. Case Report

Ruptured Superficial Femoral Artery Aneurysm. Case Report

Preservation of Left Hepatic Artery Emerged from Left Gastric Artery During Lymphadenectomy for Cancer

The Results of the Single-layer, Interrupted, Manually Sewn Esophageal Anastomosis

Esophagogastroplasty for Tumoral Esophageal Stenosis

Separate Abdominothoracic or Abdominal-thoracocervical Approach for Esophageal Tumors

Rare Gastric Tumors

Lower Limbs Varicoflebitis. Surgical Treatment

Esophagogastroplasty for Esophageal Cancer Postoperative Results

Early Postoperative Complications Due to Classic Colorectal Surgery

Synchonous Multiple Neoplasia. Particularities of Surgical Treatment

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    55 Meadowlands Parkway
    Secaucus, NJ 07094



55 Meadowlands Parkway
Secaucus, NJ 07094



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