The Doctor and the Dike by Jason Hytes

The Doctor knew all about women, and he solved their sex problems in a most unique manner. His beautiful receptionist also had a problem — Lesbianism

From the back:

When Dr. Reed asked his patients to “lie down and talk” they wore little more than their problems, but their problems were always interesting:

Gwenn’s breasts were too small.
Claire’s were too large.
Joan did strange things with men.
Connie did stranger things with women.
Jessica could not get enough.
Sandra got too much.

Dr. Reed solved all of these problems and many more – all except his own problem – and his receptionist’s.

What Goes On Inside A Psychoanalyst’s Private Office Is A Professional Secret, And Well It Should Be For The Lusts And Perversions Spilled Out There Will Shock You To The Core