you won't find anything on Cellis. However there are several stores and restaurants along San Fernando Road, 1 block north/east.
McDonalds: at corner of Truman and Brand
Truman House Tavern: on San Fernando just north of Brand is a nice Gastro Pub style restaurant but it's 21 and over only.
Los Tres Hermanos: corner of San Fernando and Maclay. Great Mexican place, long time Fan Fernando favorite.
Chipotle & Wingstop: North-West corner of Maclay and Truman
Denny's: open 24 hours! South-East corner of Maclay and Truman
Ihop, Menchie's, Pokitomas, Starbucks, El Pollo Loco: on Truman north of Maclay, these are kinda far to walk.
The closest bathroom I found out was CVS and when I got there it was out of order...wtf
Also this San Fernando location is not showing up in my app anymore recently I'm wondering if it's out of order? And I live in Northridge.