I've reviewed the time line and the abortionist was a client of Thompson's at least up until August 1992. It seems kind of risky to assume that Thompson was serving his client in some sort of innocuous capacity. The abortionist is holding all the cards...and who knows what choice documents.
Well, the bills say 15 to 25 minutes on the phone with the woman and no one else
http://graphics8.nytimes.com/packages/pdf/politics/THOMPSON_DOCS/thompson_records.pdf