YES, i would not be worried, many a times a higher hemoglobin is seen physiologically in patients living in high altitudes / smokers/ athletes . Unless there are any other symptoms which drove you to do repeatedly do the cbc test, the mri and other blood tests . if that's the case, then we could schedule an appointment and take things further from there. if not, then you must not worry. it seems fairly normal to me .
Next Steps
you could simply do a cbc 6 monthly to keep a check on the levels.