What do doctors suspect will cause pain in right shoulder with arm numbness and tingling?

Numb: We worry about "thoracic outlet syndrome" but the person to best help is an orthopedic doctor. You might need an EMG by a neurologist as well. Start with the orthopedic doctor first. If you are displease with their plans, seek a neurologist.

Pinched nerve: First thought is a pinched nerve from the neck. Can be a pinched peripheral nerve as well for example in the brachial plexus or below.. Pain in shoulder may be related or a separate issue.