Robert Wiedmaier

Siren received a Michelin Star in the 2019 Michelin Guide for Washington, D.C.

In February 2019, Siren closed, with the goal of reopening in a different location. As of January 2020, it has not reopened.

In 2017, Wiedmaier opened Siren in the Darcy Hotel in Logan Circle, Washington, D.C.. The menu is focused on seafood, featuring a grand plateau of oysters, clams, prawns, lobster, and several styles of sashimi, and a caviar service.

In 2016, Marcel's won the Restaurant Association Metropolitan Washington (RAMMY) Award for formal fine dining restaurant of the year.

Villain & Saint is a gastropub and live music venue that opened in 2015 in Bethesda, Maryland. Robert partnered with Brian McBride and Joe Lively to share their passion for the lifestyle of the freewheeling rock 'n' roll era. Celebrating a variety of music and food, the restaurant offers a spread of tastes in music and food.

In 2015, Wiedmaier acquired a neighborhood American and seafood restaurant in Potomac, Maryland, the Tavern at River Falls. In 2016, the restaurant changed its name to Lock 72 Kitchen & Bar.

In 2012, Wiedmaier tapped five of his longest-serving employees to become part-owners of Wildwood Kitchen in Bethesda, Maryland. It is a smaller restaurant, at 2,000 square feet, seating 55 people.

In 2010, Wiedmaier opened a more casual restaurant, Mussel Bar & Grille in Bethesda, Maryland. In 2012, he opened a second (now-closed) Mussel Bar & Grille in Atlantic City, New Jersey. A Ballston, Virginia outpost of Mussel Bar & Grille opened in 2013. Another Mussel Bar & Grille opened in Baltimore, Maryland in 2015.

In 2009, Wiedmaier was honored as Chef of the Year by the Restaurant Association Metropolitan Washington (the RAMMY Awards). In August 2012, Wiedmaier was inducted into The Knighthood of the Brewers’ Mashstaff at the Belgian Beer Weekend in Brussels.

In 2009, he partnered with Kimpton Hotels & Restaurantss to open Brabo at the Lorien Hotel and Spa in Alexandria, Virginia.

In 2007, Wiedmaier opened a second restaurant in D.C., Brasserie Beck. He opened his third restaurant in 2009, Brabo in Virginia. In the following years, he has expanded to open several more restaurants in Maryland, Virginia, and Atlantic City, New Jersey under the umbrella of the RW Restaurant Group.

In April 2007, he opened Brasserie Beck (named after his youngest son), his first major foray into mussels and Belgian beer. He described the restaurant as having a "1950s to 60s train station feel," and a focus on French cuisine with Flemish influences. Esquire called Brasserie Beck one of the Best New Restaurants in America in 2007.

Marcel's, named for Wiedmaier's son, opened in 1999 in Washington, D.C.'s Foggy Bottom neighborhood with fine French-Belgian cuisine. In 2015, Marcel's underwent a major renovation with new additions to the menu. Diners at Marcel's can create their own tasting menus with four, five, six or seven courses.

He began his career working at restaurants in Belgium and the Netherlands, but relocated to the Washington metropolitan area in the 1980s. Upon arriving in the D.C. area, he took his first job as a saucier at the Morrison House in Old Town Alexandria, Virginia, at its restaurant, Le Chardon d’Or. He then worked at various hotels, including the Four Seasons and the Watergate (replacing Jean-Louis Palladin). In 1999, he opened his first restaurant, Marcel's, and now operates a group of restaurants in D.C., Virginia, Maryland, and Atlantic City. He has been invited to compete the television program Iron Chef, but declined, stating in 2012, "that's just not my thing. Not that I wouldn't do it, but I have five restaurants to run."