Marc was born and raised in Manhattan and has lived in Paris, France since 1999.

He studied cinema as an undergraduate at Harvard University and considered himself a filmmaker (or « aspiring filmmaker ») until impulsively opening Bob’s Juice Bar (Paris 10e) in 2006 when what had been a rather vague fantasy for years suddenly became a reality. Almost immediately, this hole-in-the-wall vegetarian juice bar café gained a cult-like following of locals and expats looking for a healthy alternative. In 2007, Marc wrote his first cookbook, Smoothies and, with the same publisher (Marabout-Hachette), has gone on to write Muffins (2008), Bagels Comme à New York (2009), Un Goûter à New York (2011), and most recently New York – Les Recettes Culte (2012). In 2009, Marc teamed up with French entrepreneur Amaury De Veyrac to open a second vegetarian juice bar café: Bob’s Kitchen (Paris 3e).  In 2014  they opened Bob’s Bake Shop (Paris 18e) a New York-style bakery café  featuring hand-rolled bagels and since 2016 they have been collaborating on the Shakespeare and Company Cafe across from Notre Dame. Marc is currently at work on his next cookbook. « While I have no formal culinary training, I have always felt most comfortable in the kitchen and often (too often) have food on my mind. As a creative process, the immediacy of cooking appeals to my obsessive, impatient nature. Basically, I like to do things over and over and over again until I get them right (or drop dead trying)”.