Might be tough to tell by the picture (most mistletoe we've had has had roundish/oval leaves), but if it's been in a tree for a long time, you'll notice a swelling of the branch right where (or immediately below) the mistletoe-- that'd be another way to discover if it is mistletoe.
Someone else might better recommend, but I'd try to get rid of it-- even if that means pruning the branch where it is-- because eventually (years) it will kill the tree because it is a parasite and hogs up all the nutrients flowing through the tree's system; hence, the large swelling of branches (I guess the tree's attempt at still trying to send nutrients out to the branch).
I forgot to take another pic, but I’m almost positive they’re female flowers. I don’t see any male catkins though. There are several coming out of leaf petioles. I thought it was going to take several more years before it would flower.
Those leaves don't look like the mistletoe we have and that I see around Arkansas.
Mistletoe is a parasite plant and has round to slightly ovate leaves that are thick and leathery, the berries form in clusters not single blooms.
Usually in a tree that has mistletoe you will find several plants infesting the tree, the birds eat the white berries and wipe their beaks on a branch to get the sticky seeds off, that is how it spreads, the new seeds that land in a crack in the bark or even a deep furrow will germinate.
Those look more like live oak or pin oak leaves and the swelling bud like areas are probably female flowers that will turn into acorns.
The photo appears to be from a nice, healthy tree, I don't see any signs of any diseases trying to take hold.