Education
Bachelor’s Degree – Ranchi University, India
Medical Degree – Patna Medical College, India
Internship – UMDNJ-Rutgers University Hospital
Residency – UMDNJ-Rutgers University Hospital
Fellowship – UMDNJ-Rutgers University Hospital
Board Certification – Gastroenterology and Internal Medicine
Honors & Awards
- Top Doctors, New Jersey Magazine
Specialties & Main Areas of Interest
- All aspects of Gastroenterology
- Advanced interventional endoscopy
Hospital Affiliations
- Robert Wood Johnson University Hospital
- Saint Peter’s University Hospital
Other Appointments
- Founding partner of RWJ Endosurgical Center of Central New Jersey
- Prior Chief of Gastroenterology/Endoscopy, Saint Peter’s University Hospital (1997-2003)
- Prior Chief of Endoscopy, Saint Peter’s University Hospital
Research
- Fibrin glue repair of post-bariatric surgery fistula
Fun Facts
Dr. Kastuar is an avid sports fan, his favorite teams are the NY Giants and Yankees. He also enjoys watching soccer and cricket. In his spare time, he likes swimming and snorkeling.
Conditions Treated
- Abdominal Pain
- Achalasia
- Acid Reflux
- Anorectal Disease
- Bacteria and Foodborne Illness
- Barrett's Esophagus
- Bile Duct Blockages and Stones
- Celiac Disease
- Chronic Diarrhea
- Clostridioides Difficile
- Colon Cancer
- Colon Disease
- Colon Polyps
- Colorectal Cancer
- Constipation
- Crohn's and Ulcerative Colitis Management
- Crohn’s and Ulcerative Colitis
- Diarrhea
- Difficulty Swallowing (Dysphagia)
- Diverticulosis/Diverticulitis
- Esophageal Cancer
- Esophagitis and Stricture
- Fatty Liver
- Fecal Incontinence
- Gallbladder Disease
- Gallstones
- Gas
- Gastric Cancer
- Gastritis
- Gastrointestinal Malignancies
- Gastroparesis
- Genetic Colon Cancer Syndromes
- GERD
- H. Pylori and Peptic Ulcer
- Heartburn
- Helicobacter Pylori/Peptic Ulcer
- Hemochromatosis
- Hemorrhoids
- Hepatitis A
- Hepatitis B
- Hepatitis C
- Hepatocellular Carcinoma
- Hernias (Abdominal, Groin, and Hiatal)
- High Risk Colon Cancer Screening
- Inflammatory Bowel Disease, Including Crohn’s Disease and Ulcerative Colitis
- Iron Deficiency Anemia
- Irritable Bowel Syndrome
- Jaundice
- Lactose Intolerance
- Laryngopharyngeal Reflux
- Liver Cirrhosis
- Liver Disease
- Nausea and Vomiting
- Nonalcoholic Steatohepatitis (NASH)
- Obesity
- Pancreatic Cancer
- Pancreatic Cysts
- Pancreatitis
- Peptic Ulcer Disease (PUD)
- Primary Biliary Cirrhosis
- Proctitis
- Rectal Bleeding
- Rectal Cancer
- Reflux Esophagitis/Stricture
- Silent Reflux
- Stomach Ulcers
- Swallowing Difficulty
- Ulcerative Colitis
Procedures Performed
- Bravo pH Study
- Capsule Endoscopy
- Cholangioscopy
- Colonoscopy
- Complex Polypectomy
- Diagnostic and Therapeutic Colonoscopy
- Diagnostic and Therapeutic Endoscopy
- Endoscopic Mucosal Resection
- Endoscopic Retrograde Cholangiopancreatography (ERCP)
- Endoscopic Ultrasound (EUS)
- Endoscopic Ultrasound with Fine Needle Aspiration
- Enteral Stents
- ERCP
- Esophageal Dilation/Testing
- Esophageal High Resolution Manometry and 24 Hr pH Impedance Testing
- Esophageal Manometry
- Flexible Sigmoidoscopy
- Flexible Sigmoidoscopy and IRC
- Hemorrhoid Infrared Coagulation Therapy
- Infusion
- Luminal Stent
- Percutaneous Endoscopic Gastrostomy (PEG)
- Percutaneous Endoscopic Jejunostomy (PEJ)
- Polypectomy
- SpyGlass Cholangioscopy
- Upper Endoscopy
- Upper GI Endoscopy (EGD)
- Urea Breath Test (UBT)
- Variceal Banding
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