I have back pain located near right shoulder, accompanied by arm tingling and numbness and left buttock and leg experiencing numb, tingling sensation.

Internal Medicine. Hello. The symptoms you mention are concerning for polymyalgia rheumatica or multiple sclerosis. These are caused by autoimmune disorders. I recommend you to visit an internal medicine doctor or a rheumatologist to get evaluated and discard these two possibilities or get proper treatment for your ill.