Here is some feedback based on docs that I have worked with on group retina and multi-specialty retina (these are commonly noted points to me but are not representative of every single practice of these types):
Large group retina has the biggest benefit of being a purely retina focused practice with similar shared needs amongst the physicians practicing there. This can make it easier to buy new equipment more frequently or draw more clinical trial research into the practice. Typically their processes will be worked out and be very efficient to handle a volume of patients higher than most practices. These practices will also tend to keep overhead down compared to multi-specialty practices. Here you will be expected to do outreach to your referral network and continue building upon the current referral network of the practice. In a retina only group, you will likely see more challenging cases that are referred to you as well. In many cases, a retina only group requires you to cover multiple clinic locations, some of which may be satellites that are 30+ min away.
For retina in a multi-specialty group, I will assume you are not the only retina surgeon in the group as this is becoming less common and I imagine the trend will continue.
These practices may not have as defined processes for retina patients if they don't have a long history with retina surgeons but ones that do I imagine you will find as efficient as retina only groups. Here you may not have the leverage in the practice to purchase equipment as frequently in retina only group as there will be less use amongst the whole practice. The huge pro of being a retina doc in a multi-specialty group is the large built-in referral network - in groups large enough this is typically enough to build your entire practice around. Overhead will be higher here in most cases. Cases in these practices will typically be easier. These groups also typically have less commuting/satelliting since internal referrals come to you. These practices can garner clinical trials too. Here there may be more call depending on how many retina docs are in the practice.
For solo retina docs, I don't have as much hold on because they establish their own practices instead of being recruited. I can note from some I've worked with on part-time positions they tend to satellite more than other types of practices.
For retina trained comprehensive, I know only two instances of a surgical retina doc doing comprehensive but know many instances of medical retina trained docs doing comprehensive. This is very common in saturated markets given there may be more retina groups drawing referrals and there not being enough referrals in a comprehensive group to keep a retina doc busy with just retina patients.
