Officers responded to the scene of the shooting in the 1400 block of Eighth Street on Sunday at about 5:45 p.m.
Upon arrival at the scene, police located Medearis, a Berkeley resident, suffering from gunshot wounds.
Medearis was transported to a local hospital, where he was pronounced deceased, police said.
While police were responding to the scene, they received information regarding a possible suspect near Eighth and Page streets, police said.
Police canvassed the area for evidence but did not detain any suspects.
The homicide remains under investigation. Anyone with information regarding the homicide is urged to contact Berkeley police at (510) 981-5741 or may do so anonymously at (800) 222-8477.