Being the sole guy in your specialty in a big group practice can suck. I was in a big neuro group and they leached off my revenue for 2 years before I said enough is enough. I did not have a mid level and was therefore doing about 1/2 as much as your volume. I was also probably taking home half of your income. Needless to say we both are/were getting royally screwed. My overhead as a percent of total collections turned out to be ~75%
Sorry to hear that man! I'm hearing predominantly bad experiences and rarely good ones with these surgeon/non-surgeon partnerships. I'm in my 5th year and really considering my options.