Ologist

First was the increasing number of ologists. While they were far from dominant, their voices were heard throughout the agency, and what they said caused many of the foresters to think.

Source: wiktionary

I was talking with my ologist this week and he asked if I felt like I was in a fog.

Source: wiktionary

Ologist physicians dominate America's healthcare system. An ologist might take care only of your bones, your skin, or your liver.

Source: wiktionary

\Ve critics, as you must have long ago observed, have our funny little ways; and one of them is that we always keep some Ologist or other on the premises.

Source: wiktionary