There is no cause for someone to assume the healing ministry over disease and death are any less a part of the work of Christ, today.
James puts it this way in chapter 5:
13 Is anyone among you suffering? Then he must pray. Is anyone cheerful? He is to sing praises. 14 Is anyone among you sick? Then he must call for the elders of the church and they are to pray over him, anointing him with oil in the name of the Lord; 15 and the prayer offered in faith will restore the one who is sick, and the Lord will raise him up, and if he has committed sins, they will be forgiven him. 16 Therefore, confess your sins to one another, and pray for one another so that you may be healed. The effective prayer of a righteous man can accomplish much. 17 Elijah was a man with a nature like ours, and he prayed earnestly that it would not rain, and it did not rain on the earth for three years and six months. 18 Then he prayed again, and the sky poured rain and the earth produced its fruit.
Too often the believers take these verses far to lightly and the assemblies do not lay a siege of continual prayer before the Lord Jesus Christ that they witness miraculous wonders in this modern time.
The Lord Jesus Christ is no less accessible to believers, today, then the apostles. That is verified by the very words of Christ in John 14:
12 Truly, truly, I say to you, he who believes in Me, the works that I do, he will do also; and greater works than these he will do; because I go to the Father. 13 Whatever you ask in My name, that will I do, so that the Father may be glorified in the Son. 14 If you ask Me anything in My name, I will do it.
It isn't a matter of "if it is in will of God."
Such is basic understanding, is a given, an assumption that is to be the goal and basic understanding of every believer in the assembly. Every believer should be very familiar with Ephesians 5:
15 Therefore be careful how you walk, not as unwise men but as wise, 16 making the most of your time, because the days are evil. 17 So then do not be foolish, but understand what the will of the Lord is.
Too often the typical modern believer has such a shallow walk with Christ that prayers are infrequent and ineffectual; the life is self absorbed in the cares of this world and worldly; the relationship to the Holy relegated to a thoughtless time of sensual worship.
As a result when REAL prayer over REAL issues is sought for, the typical shallow believer has no REAL experiential understanding and much less true communication skills with the Holy.
Pitiful, indeed.