Three years later, he moved to New York to become the executive chef at Eleven Madison Park, and in 2011 he and his business partner Will Guidara purchased the restaurant from Danny Meyer's Union Square Hospitality Group.

In January 2020, Humm made the decision to end the partnership with the NoMad group of hotels in New York, Los Angeles, or Las Vegas.

When the COVID-19 pandemic led to Eleven Madison Park temporarily shutting down, Humm partnered with Rethink to keep a dozen chefs on staff, preparing and delivering meals to first responders and food-insecure communities throughout New York.

[10] The restaurant continues to support this cause in a number of ways —  including giving excess ingredients to Rethink Food and donating a percentage of the revenue from each reservation at Eleven Madison Park.

In November 2021, Humm left Claridges after they rejected his proposal for a vegan menu due to concern about the potential response from regular customers.

[12][13] In January 2024, a docuseries titled You Are What You Eat: A Twin Experiment on Netflix included Eleven Madison Park and Humm's decision to have the restaurant change to plant-based cooking.

The World's 50 Best Bars Michelin Additional awards The renovation of Eleven Madison Park is featured in the Netflix docuseries 7 Days Out.