Curzon, Cumbey & Kunkel, PLLC was quietly founded in 1997 by John Curzon, Terry Cumbey and Eric Kunkel, with their small office located in the heart of Tulsa, Oklahoma.   They joined together with the goal of creating an accounting and consulting firm that was different.   

In addition to providing the traditional accounting, tax and audit services, John, Terry and Eric took a personal approach with their clients, advising them on strategies to develop and achieve the client’s business and personal goals. Focusing on those goals and looking ever forward, clients were able to achieve their desired results.  Encouraging their clients led to building strong, long-term relationships and solid relationships enabled a culture of accountability and thoughtful care for our clients and their families. 

By taking this approach of providing exceptional service while building lasting relationships, CCK has grown from their quiet beginnings and attracted clients from a diverse range of industries and professions as well as from their local region to what is now a global footprint.  

The vision of Curzon, Cumbey & Kunkel lives on as CCK Strategies. CCK has multiple offices in the US, clients around the globe and a team of highly skilled professionals who are passionate about helping businesses thrive. At the core of everything CCK Strategies does is their founders’ vision of providing exceptional service, building lasting relationships with their clients, in a culture of care. 

Founder John Curzon

John E. Curzon,

Founding Partner


Founder Terry Cumbey

Terry L. Cumbey,

Founding Partner


Founder Eric Kunkel

Eric M. Kunkel,

Founding Partner


IPA Top 300 Firms

Frisco Office
3211 Internet Blvd, Ste 330
Frisco, TX 75034
(469) 562-4036

Tulsa Office
8811 S Yale Ave, Ste 400
Tulsa, OK 74137
(918) 491-4036