Should I go to a urologist or nephrologist for kidney stones that seem to be hidden?

Either. To have removed - urologist; to help deal with metabolic prevention - nephrologist or urologist.
Stones. Hidden stones may not be approachable by surgery or lithotripsy. I recommend seeing an experienced nephrologist first; having an evaluation of urine chemistry so that why you form stones is figured out and treated. The chemistry of your stones is very important to determine.

Related Questions

Where to go urologist or nephrologist? Case for 5.5mm kidney stone non obstructive? Is it big or can pass by drinking water?

Urologist. Average person "passes" a 5 mm stone 1/2 the time: bigger the stone, the less likely it will pass. Alpha blockers (tamsulosin) have been shown to improve spontaneous passage, but the best estimate correlates with hx of "passed" stones. Important to strain all urine/save any stones - the best way to know if one passes, and to have it analyzed for composition - for recommendations for prevention. Read more...
Stone in kidney. This size stone may pass on its own if you drink 4-5 liters of fluid per day. Be sure to include at least one quart of lemonade or lemon extract added to water. If you use ReaLemon extract, add 5 teaspoons to each quart of water you drink. This will help. Minimize salt. Minimize animal protein. Push the fluids daily. Read more...

73 y.O. W/m, left kidney hydronephrosis 3 yrs, large cyst 10 yrs, history kidney stones, lumbar stenosis, bilat leg/back pain - nephrologist or urologist?

Bilateral leg/back. Pain could be most related to spinal stenosis, epically if back pain made worse with prolonged standing or walking a reproducible distance relieved by sitting down, in about 5 min.The bilateral location of your pain argues against kidney stone pain( that pain is always unilateral(one kidney or the other.It would be very unusual to have a moving stone in both kidneys simultaneously. C primary care. Read more...
Urologist and... By hx, you may require no urgent attention but a timely follow-up so to define what you would practically need for the above. Seeing a urologist will decide if intervention is needed or not; to me, 10-yr large cyst is benign so leaving it lone; for 3-7 yr left kidney hydronephrosis ; stones, they appear clinically silent and may be just watch them. Regarding l-stenosis ; ...Pain, see neurologist.. Read more...
Diagnosis. Start with urologist. May need both for optimal care. Read more...