List of Denny's Stores in Rancho Santa Margarita, CA Outlet Note Regular Brands Denny's California Rancho Santa Margarita Rating 4.8 based on 89 votes Products Fast Food Restaurant Pancake House Coffee Shop Steakhouse NameAddressPhone Name/Address/Phone Denny's outlet - Rancho Santa Margarita 28562 Oso Pkwy, #D (949) 716-7596 People Also Viewed