Greg Koeller


Los Angeles
(424) 239-1907

Greg Koeller is an associate with Prospera Law LLP. As a member of the Health Care Industry Group, Greg represents major California health plans in arbitrated and litigated matters involving hospital and other provider breach of contract and health plan provider disputes. Prior to joining Prospera, Greg worked at an Orange County-based firm where he primarily represented the County of Orange, its various departments and agencies, and their employees in a wide variety of cases, including personal injury, wrongful death, civil rights and employment discrimination. Greg has experienced responsibilities regarding all aspects of the litigation process, from preliminary investigations, discovery, depositions, settlement negotiations, and ADR proceedings, while also successfully representing his clients at trial and in appellate proceedings before the California Court of Appeal.

Greg was admitted to the California Bar in 2016 after graduating from Chapman University School of Law, where in addition to earning his law degree, he completed the Advocacy and Dispute Resolution Emphasis program. While in law school, Greg clerked for the Honorable Kim G. Dunning, who sat on the Complex Civil Litigation Panel at Orange County Superior Court.


  • J.D., Chapman University, Dale E. Fowler School of Law, 2016
  • B.A., University of California, Santa Barbara, 2013


  • State Bar of California