Bernard Leland Nash Sr. was last seen in the 2500 block of 36th Street, Southeast.
Nash is a Black male, who is 5-foot-5 and 160 pounds, with a dark complexion, brown eyes, a gray goatee and gray hair.
When he was last seen, Nash was wearing a black sweater, black pants, black shoes, a black cap, and glasses. He was also carrying a black shoulder pouch.
Police say he may be in need of medication.
If you can help police find Nash, call (202) 727-9099.