Not even in the slightest. We say "Thank you, God, for healing us." And we say "thank you" to our friends for their caring concern.
Do you believe God alters His plan for your life because you have 12 friends praying for you rather than six?
Oh, wait, that IS what the RCC teaches. Even after a person has died the RCC believes the number of prayers received on another person's behalf changes their status before God.
Every bit of that being a works-based salvation which is denied in Scripture over and over and over.
God understands what we need before we even ask. God hears all prayers, but He knows our prayers before we say them. He knows what we require before we ask. He knows what will become of us even as we pray for something to occur or not occur.
And none of those reasons should keep us from praying anyway because that is what God has instructed us to do as a means of bringing our every thought captive to Him alone. That way the focus is always on God and what God has done and continues to do for us in our lives.
The prayers of others may comfort and console us, but they do not heal us. God alone is the only physician.
I thank God and give Him alone the credit for my healing. I may thank others for their kindness in remembering me.