ему надо было обслужить всех своих

ему надо было обслужить всех своих пациентов, поэтому он решил, что ее странное поведение — просто каприз, на который он не должен обращать внимания.

Results (English) 1:

He had to serve all of your patients, so he decided that her strange behavior is simply a whim that it should not be ignored.

Results (English) 2:

he had to serve all of his patients, so he decided that her strange behavior - just a whim on which he should not pay any attention.

Results (English) 3:

It must have been giving all of their patients, so he decided that her odd behavior - simply meaning, to which he should not pay attention to.