Online Enquiry New Enquiry Online consultancy for Dr Calwin David Singh will be taken on all Thursdays evening 5 to 6 pm and consultancy fee will be 500 and registration fee 200. Pay Online Old Enquiry Online consultancy for Dr Calwin David Singh will be taken on all Thursdays evening 5 to 6 pm and consultancy fee will be 500. Pay Online +91 93616 62200 contact@calwinhospitals.in 24/7 Emergency Services