Dr. Rajkumar G. Mariwalla is a gastroenterologist in West Islip, New York. He received his medical degree from Maulana Azad Medical College and has been in practice for more than 20 years. Dr. Rajkumar G. Mariwalla has expertise in treating colonoscopy, upper gi endoscopy, inflammatory bowel disease (ibd), among other conditions - see all areas of expertise. Dr. Rajkumar G. Mariwalla accepts Medicare, Aetna, Humana, Blue Cross, United Healthcare - see other insurance plans accepted.