The daughter of controversial neurosurgeon Charlie Teo is likely to face a custodial sentence if she is convicted over her alleged crash with former Comanchero "supreme commander" Jock Ross on Sydney's north-west outskirts.

Nicola Teo, 24, was allegedly driving on the wrong side of the road for up to 200 metres in the Hawkesbury region when her Toyota LandCruiser and a motorcycle being driven by Mr Ross collided.

Ms Teo, the second eldest of Dr Teo's four daughters, called triple zero and Mr Ross was flown to Westmead Hospital and placed in an induced coma, with lower leg and internal injuries.

He remains in hospital in a stable condition.