Your service line isn't as cheap as you may believe. Equipment costs and maintenance of the things you use (XRAY, US, computers, etc), your staff and their benefits as well. Insurance.
Employed doctors seem to believe their overhead is limited to themselves, and then they want to negotiate higher collection percentages, higher salaries, another MA on their staff, a scribe and a midlevel.
Your cost is your entire service line, not just you as an individual.
Having said that, make yourself profitable and negotiate hard. Stick up for yourself, just don't automatically assume you deserve more bc you collect 1.3M.
BTW, the OP is wrong about revenue. He/She said like 1.3M, but over 250 procedures a month and 2-3 trials per week is far higher than 1.3M. Come on...That's 8-12 trials per month, and around 3000 procedures per yr...
I'd expect that would give me over 1.5M at least. That is well over 100 trials per yr.