Why not
/howl Master Doctor buffing and healing wounds over here! (45 minute buffs) Tips aren't needed, but are greatly appreciated.;
/pause 3;
/howl Invite me to your group in the next 10 seconds to get buffs! Make sure you are on leave or you will not recieve buffs!;
/pause 10;
/join;
/pause 2;
/group Hi there! Tips are appreciated

If you want to make my top tipper list, you'll have to bank tip me;
/ui action targetGroup0;
/greet;
/pause 2;
/healwound;
/group Starting buffs and heals now;
/pause 6;
/nutrientInjection;
/pause 6;
/endorphineInjection;
/group Two more buff left;
/pause 6;
/serotoninInjection;
/group feel free to recharge my droid;
/shout Almost done with this customer! Get ready to invite when I say to!!!;
/pause 6;
/adrenalBoost;
/group All done! Good luck with the loot and Jedi Missions;
/bye;
/target self;
/pause 1;
/disband;
/macro buff;
This is a good all around macro. You may want to change some of the /says and pauses. I use this on Ahazi with my Doctor
Also, the Action buff has been broken for a while now I think, so you may want to take that out and save 6 seconds.
I find the best place to buff is in Kaddara for all the Bounty Hunters. Tips are usually between 2k-20k. You can make some good cash if you're afk for extended periods of time