If he is a Kaiser insured patient he will only be able to seek care at Kaiser facilities. This is a situation of the squeaky wheel getting the grease. He needs to go to the biggest Kaiser in the area and be on his doctors ass every single day until he gets help.
How can we determine which ER around us is the best/most advanced? Paul's insurance is considered good (Kaiser Permanente) but his doctors barely listen to him, infrequently order tests, and weren't overly concerned/in emergency mode over the fluid buildup.