Historically, dermpath is a little bit of a different animal than traditional pod labs. Dermatologists have always been trained to read biopsies during residency and many dermpath fellowships train (and may even prefer) dermatology graduates to pathology graduates. This is historical tradition and it has traditionally not been affected by self referral laws. Dermatologists can sign out their own biopsies (and they often do sign out the easy ones). The rise of "true" pod labs is different, so forgive me for in the post above I was referring to the vernacular "pod lab" rather than a true podlab.
In addition to traditional private practice and academic settings, dermatopathologists can practice in dermpath only practices which are composed of dermatopathologists who read slides full time and are not clinician owned.
Also, dermpaths can be part of a group of dermatopathologists. This is where things can get dicey. In one scenario, the dermpath is a full partner physician with the other docs in the practice and is treated equally. This is less common.
Another scenario is where the dermpath is an employee of the dermatology docs and gets paid a salary by them to their read biopsies. In this case the dermatologists make serious $$$ off of the dermpath by paying them a fraction of the total revenue generated by their pathology services. Obviously, in this type of setting the dermpath needs to be a "type B" personality and enjoy working for someone else who is more "type A" and wants to be in charge. Nothing wrong with that if that is what they want. Unlike similar set-ups with GI, GU, etc (which will likely in the future be phased out by removing AP from the in office ancillary services exception) derm-based set-ups like this will likely not go away because of tradition and other factors (which are too much to get into here).