Suggest Treatment For Raised Creatinine Levels In A Diabetic Patient

My husband, age 60 has diabetes, weighs 260 lbs, is around 5' 9'' -5' 10 and smokes (about 5 cigs or less a day NOW) but has been a smoker for many years). he recently had blood work done and his microalbumin/creatinine ratio is 560 which we know is HIGH and means that protein from his kidneys is leaking into his urine. He is on many meds for these. He does HVAC work and is required to go onto roof tops in 90 degree weather daily. I also want to mention that after seeing his M.D. he may have gout in his elbow. (we are currently going to change doctors being that his current dr. prescribed meds for the gout without even sending him for bloodwork to check his uric acid and never looked at his current blood work from his endocrinoligist among other reasons). Can you shed some light on how serious or not this may be and what he needs to do (besides conferring with a new MD which I'm sure he will have a complete physical). Is it alright for him to have soft boiled eggs, (the whole egg and not just the whites). I would appreciate any light you can shed on this matter.