A Victorian man has been sentenced to jail for rorting the National Disability Insurance Scheme (NDIS) of more than $300,000 by billing the provider for fake lawn mowing services.

A county court judge described Mitchell Landry as an isolated, impulsive young man who thought having more money would impress people.

The 23-year-old from Ocean Grove partially blamed his crimes on recovering from a gastric band operation after years of being bullied for his weight.