Compensation/wRVUs= 35.80 (median)
Compensation= 35.80 x wRVUs
Now if you know how much workload you will handle in your part time position (no. of wRVUs-measure of clinical productivity e.g. 1 biopsy sign-out has a wRVU of approximately 0.80 or so).
Hence ask the employer to give you an estmate of the wRVUs per day expecpected (all semidecent practices have these figures), per month or per year and you can give an estimate of total compensation you expect.
Lets say you have 10,000 wRVUS/year.
A median compensation would be 35.80x10,000= $358,000
Lets say you have 100 wRVUs/day in your part time job.
A median compensation would be 35.80x 100= $3,580
Ofcourse, *****/loser/c--ks--king employers will try to low ball you as much as possible, so that they can have more money at your expense so they can go and s--k more c--ks (aka play golf).
Buy the latest MGMA or AMGA survey and get in the ring with the scum and be ready to make it bloody.