[4] That approach was particularly relevant in the development of HealthCare.gov, the first government website that provides consumers with a searchable database of public and private health insurance plans available across the U.S. by zip code.

By its fourth year, the event, renamed the Health Datapalooza, grew to over 2000 attendees, receives coverage from technology blogs, and has participation from venture capitalists, physicians and politicians from both sides of the aisle,[15] providing an example of a way that government can engage with the private sector.

After assuming this role, Park worked with a variety of agencies across the federal government to replicate the Datapalooza in their respective domains.

[17] HealthCare.gov was also the first website ever "demoed" by a sitting president[18] The following two versions, from the relaunch of the front end in May 2013 to the badly flawed marketplace that went live in October 2013, were developed by contractors and overseen by officials at the Centers for Medicare and Medicaid Services, outside of his purview within the White House Office of Science and Technology Policy.

When the extent of the problems with Healthcare.gov became clear, Park was tasked by President Obama to work on a "trauma team" that addressed the "technological disaster".

[19][20] Park, along with Jeffrey Zients, led the "tech surge" that ultimately repaired Healthcare.gov [21] over the winter, eventually fixing the marketplace sufficiently to enable millions of Americans to find plans and purchase health insurance.