The CA courts have a search page that lets you search by phrase or name here. That may provide a partial list, but a full list may only be available by calling each CA court an attorney has ever filed a case in and asking for case judgments or settlements from those courts. A call to a court's clerk of courts can normally provide informaiton about that and where else to search.
Also, the claim you make may, if accurate, mean that an attorney may be acting against the CA ethical code for attorneys (which may mean that an attorney may lose the ability to practice law in the state). Matters such as those are taken seriously by Bar Associations and/or state supreme courts. You can contact the CA Bar Association's office of Attorney Discipline (see here) to discuss you beliefs and learn more about what can be done.
That fact may or may not be in a court's final judgment, where the court makes its final decision as to which way the case will go. That may (or may not) be public information. If that fact has ever been discussed in any of the case filings then a court's record of that filing may contain it, but not always. If, however, the CA Bar Association's office of Attorney Discipline investigates the matter then the attorney may need to turn over all files and information, including information about which parties he/she has worked with.
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