I'm terribly sorry to hear about your ordeal. If you can, you should also post your experience on the Penuma subreddit (although it will likely be removed by one of Elist's sycophants, but if a view can read it, you'll have helped that many more people).
If length loss was not disclosed in any paperwork or consultation as a potential complication (which would be strange by now since it happens almost inevitably with every removal, varying in degrees of loss depending on how the scar tissue forms), you may have a legal case against him. Also, despite what I perceive is the ineptitude (or corruption) of the Board of Medicine in California for slapping his wrists with every complaint, you may still want to write one anyways.
Lastly,
there is reason to believe you may able to achieve some semblance of normalcy over the next few years. You see, some of that scar tissue might be something a Surgeon can work with, and combining that with a committed long-term stretching/traction regimen may get you back to a size modest enough to let you stand as you urinate, and even venture the dating scene even. There are a few Doctors I'd recommend looking into: Dr. Carney (Atlanta, GA), Dr. Gelman (Southern California), Dr. Alter (Southern California), Dr. Solomon (Southern California), and also a Dr. Brant (Brandt sp?) but I'm not sure where he's located, just heard about him through the
penumaproblems subreddit (another good resource for your situation).
If you use
PhalloBoards 2.0
SEARCH feature, you'll find a lot of stories similar to yours, and many who have discussed protocols (usually prescribed by a Doctor) that has helped them. Of course, I would ultimately follow the directions of your new physician (obviously don't bother with Dr. Elist again), and I would only go with the names I listed above (they all have experience with Penuma removal, you need someone with that kind of specialization). I hope that helps and I wish you the best, sincerely.