Police are appealing for public assistance to help locate missing man Daniel Deveney.
The 48-year-old was last seen leaving a hospital in Spray Street, Frankston about 9am on 15 October.
Police and family have concerns for his welfare as he has medical conditions requiring medication.
He is Caucasian and 185cm tall with short dark brown hair, and is known to frequent the Pines Flora and Fauna reserve.
Investigators have released an image of Daniel in the hope that someone may have information on his current whereabouts.
Anyone who sees Daniel is urged to contact Frankston Police Station on (03) 9784 5555.