Police are appealing for public assistance to help locate missing man David.
The 54-year-old was last seen near a hospital on Studley Road, Heidelberg about 11.50am on Thursday, 9 February.
Police have concerns about David's welfare due to his medical condition.
David may be travelling in a silver Toyota Prado with registration ZKA714 in the Taggerty area.
An image of David has been released in the hope someone will come forward with information about his current whereabouts.
He is described as being of slim build with short brown hair, grey facial hair and wears glasses.
David was last seen wearing dark clothing and he uses a walking stick.
Anyone who sees Mark or has information on his whereabouts is urged to call Boronia Police Station on (03) 9760 6600.
