Please advise what is the difference between a nephrologist and a urologist?

Both can diagnose . And treat kidney, ureter, bladder and urethral problems. However the urologist, being a surgeon can do surgical procedures in the diseased urologic organs while the nephrologist can't. God bless u!
Doctor type. Urologist is a surgeon and is trained to operate on kidneys, ureter, bladder, and prostate. Nephrologist is an internal medicine doctor who superspecializes in body chemistry regulation, kidney impairment causes, protein in the urine, inflammation of the kidney and the therapy if these problems. Nephrologist also specializes in dialysis care and transplant care.