AspenPointe's president and CEO abruptly resigned last week, leaving the massive mental health provider searching for a new leader as it heads into the new year.
Mick Pattinson tendered his resignation Dec. 13 and left the same day, ending a 41/2 year run at the helm, the organization announced Tuesday.
His post was immediately filled on an interim basis by Susan Seiler, the organization's chief operating officer, and a national search is underway for his replacement, said Kevin Porter, the nonprofit's spokesman.
In a news release announcing his departure, the nonprofit said Pattinson wanted "to move into a private consulting practice." No other details were announced.
Pattinson arrived at AspenPointe in 2013 and led the nonprofit through Medicaid's expansion under the Affordable Care Act. He also oversaw the nonprofit's work implementing mental health reforms pushed by Gov. John Hickenlooper following the 2012 Aurora theater shooting, which included the creation of two walk-in centers for people experiencing mental health crises.
The nonprofit offers a key source of mental health care for Medicaid patients, having seen more than 31,300 patients last year. It paired 11,400 more people with non-AspenPointe providers, often for substance abuse treatment.
In a statement, Pattinson thanked the people and organizations that worked with AspenPointe during his tenure, and he praised the nonprofit's "amazing" work.