Welcome, MoreThanMD! Is this a Medicaid mill or just a regular mill? I ask because I don't think there is any good solution to the Medicaid problem. They just don't pay enough to make a quality practice viable.
There are definitely ways to increase one's efficiency, and I'm sure other medical ophthalmologists will know some specialty-specific things you can do. You basically have to look at everything you're doing and decide whether you can delegate it to somebody else, omit it, do it differently, or do it faster. That's all!

With paperwork, for example, if you can streamline things down to a single form (on paper or computer) that needs to be filled out, which has only what you need and in the order in which you do it, that will be more efficient than multiple forms where you have to jump back and forth. Delegation can be great if you are working with competent people, but if you do not trust their work, then you will either feel compelled to repeat it yourself or worry that something important was missed. Some people limit patients to one problem per visit, but then patients are not happy because they are busy, too, and they know that it is more efficient for them to address all their problems at the same time.
This is a huge problem in medicine because people want to maintain their incomes while reimbursements are going down. Everybody is trying to figure out ways to increase volume. Some of the ways are good and creative, but others are dangerous and scary. If you feel that you are being pushed to the point of compromising quality, then it is just not worth it, IMHO. It is good to feel that you could find a different job if you needed to. Then you are not at the mercy of one employer.