Как правильно будет. On arriving to the village, the doctor... или On arriving at the village. ..

'To Arrive to' is not a standard verb expression.

'To arrive in' or 'to arrive at' are the norm. For example:

'To arrive in London'
'To arrive at a meeting'
'To arrive at the airport'
'To arrive in the city'

However, the only way where 'arrive' can be followed by 'to' is:

a) When followed by another verb in the infinitive. For example:

'My friend arrived to give me a present'

b) When followed by a clarified noun. For example:

'An answer has arrived to my letter'

спс за ответ!!!