Finding Gall Stone/Appendix/Abdominal Pain Specialist in Dhanori/Viman Nagar/Vishrantwadi/Pune? Come and Visit Dr Anita Munde is the Best Gall Stone/Appendix/Abdominal Pain Specialist in Dhanori/Viman Nagar/Vishrantwadi/Pune. What is the main cause of gallstones? Gallstones form when bile stored in the gallbladder hardens into stone-like material. Too much cholesterol, bile salts, or bilirubin (bile pigment) can cause gallstones.