Chest tightness radiating to jaw.

After consulting with cardiologist ECG ,2D echo was normal TMT showed 90% efficiency but in third round he got pain in TMT .He asked to go for CT coronary angiogram because of covid 19 risk to patient.CT coronary angiogram showed calcium score 322.5,LAD 50%luminol stenosis,D1 moderate 60-70%,D2-70%luminol stenosis,LCX-50%moderate andmild 30% luminol stenosis,OM1normal,RCA SEVERE70%luminol stenosis ,PDA Mild ostil stenosis and PLV IS unremarkable and circulation in right dominant.IMPRESSION-calicum score 322.5,right dominant circulation,severe disease in distal RCA and D2.Moderate disease in LAD,D1and LCX.Mild disease in PDA. Small patent foramen ovale. Patient has to undergo angiogram suggested  by Dr. My query is angiogram is necessary? 2.if we angiogram is there possibilities of keeping stent and how many or not required . 3.if stent not required by medicine it can be solved his blockage. 4.in Hyderabad which Dr is best to handle these type of cases high success rate.please suggest.