Matthew 19:2:

And great multitudes followed him; and he healed them there.

Notes on Matthew 19:2:

This must have been quite a crowd, because if a multitude followed Him, that would be a lot of people.  But here, multitudes (plural) followed Him.  Not only that, but they were great multitudes.  As we see in many other passages, the people followed Him when they wanted to get healed; Jesus was not running around looking for sick people.

See also:

The Baseball Diamond of Healing
YOU Can Be Healed
Objection: Unlike Faith Healers, Jesus Took People Aside to Heal Them
Condition: Anything Else Not Listed Here