James O’Kimosh Appointed as GM at Desert Diamond Casinos in Arizona to Drive Growth

Written by

Share on social media

The Tohono O’odham Gaming Enterprise has appointed James O’Kimosh as General Manager for its three Southern Arizona properties effective January 5, 2026.

Hand signing a contract, James O'Kimosh GM appointment

Key Takeaways:

  • James O’Kimosh, with a background in education and gaming operations, steps into the role of General Manager.
  • He will oversee three Desert Diamond Casino (Desert Diamond Casino Tucson, Desert Diamond Casino Sahuarita, and Desert Diamond Casino Why) properties as part of regional expansion efforts.

James O’Kimosh Brings Education and Operations Experience to GM Post

According to Tribal Gaming and Hospitality, O’Kimosh, a tribal member of Menominee and Arikara heritage from the Menominee Reservation in Keshena, Wisconsin, brings a hybrid background in education and gaming operations, having served as a math and computer science teacher, a college professor of information technology, and in executive gaming roles.

O’Kimosh joined Desert Diamond Casino in 2019 and most recently served as Southern Arizona Slot Director.

“It’s an honor to have this opportunity to serve as General Manager for three unique casinos. Southern Arizona is where Desert Diamond Casino got its start and there is still so much room to grow,” O’Kimosh said.

Desert Diamond Casinos Position for Regional Growth and Operational Scale

The enterprise, which operates three Southern Arizona sites and two in the West Valley, framed the hire as part of ongoing efforts to consolidate regional leadership and accelerate growth.

Daniele Chilton, who was appointed as CEO for the Tohono O’odham Gaming Enterprise in February 2025, highlighted O’Kimosh’s operational record and strategic outlook, saying:

“We are excited to welcome James to the position of General Manager for our three Southern Arizona casinos. During his time at the Enterprise, James has demonstrated a distinguished track record of strong leadership, operational excellence, and strategic vision that will play a key role in continuing to grow our Southern Arizona properties.” as reported by Indian Gaming.