Firm Leadership


Stanfield & O’Dell’s eight shareholders are experienced leaders with a heart for service. Together they provide many cumulative years of expertise in an array of specialties for our valued clients. All of the shareholders are members of the American Institute of Certified Public Accountants (AICPA) and the Oklahoma Society of Certified Public Accountants (OSCPA), including the Tulsa Chapter of the OSCPA.

John Grace, CPA/ABV/CFF

35+ years
Tax, Consulting & Business Valuation
Phone: 918-628-0500
The lead shareholder in the Stanfield & O’Dell
valuation practice, John has been with Stanfield &
O’Dell since 2002.  In addition to the Accredited
in Business Valuation (ABV) credential, he holds the
Certified in Financial Forensics (CFF) credential from
the AICPA.  His expertise includes valuation
studies related to business acquisitions and
divestitures, management decisions, employee stock
ownership plans, estate and gift tax returns,
charitable contributions, divorces, loss/damage claims
and more.





David Hays, CPA

35+ years
Audit & Consulting
Phone: 918-628-0500
More than 35 years of public accounting experience
providing audit and related services make David Hays
uniquely qualified to lead the Stanfield & O’Dell Audit
Department.  He serves his community with the same
dedication he provides clients.  In addition to his
participation in professional accounting organizations,
David is an alumnus of Leadership Tulsa and former board
chairman of Special Olympics of Oklahoma.  He serves
as an officer for YMCA of Greater Tulsa. David holds
Bachelors and Masters Degrees from Oklahoma State







Karen Kirchman, CPA, CGMA

25+ years
Management, Tax & Consulting
Phone: 918-628-0500
Karen brings more than 25 years of public accounting
expertise to the Stanfield & O’Dell team.  Her
specialties include tax and consultation for multiple
business sectors as well as non-profit organizations.
A Certified Global Management Accountant, Karen
assists with management decisions, business succession
planning, and buy-sell agreement consultation.  Karen
is a graduate of Leadership Tulsa and currently serves on
their Board of Directors as Immediate Past President.
She is a member and past officer of the Tulsa
Employee Benefits Group.  Karen received her Bachelor
of accounting from Oklahoma State University.

Justin Moore, CPA/ABV, CVA

15+ Years
Business Valuation, Tax & Consulting
Phone: 918-628-0500
Justin has been practicing public accounting since
1997.  His area of focus includes consulting and tax
planning and preparing valuation studies for a variety of
purposes, including acquisitions and divestitures, employee
stock ownership plans, tax matters, management decisions,
buy-sell agreements, business succession planning and
divorce proceedings.  He received his undergraduate
degree from Oklahoma State University, and has a Master’s
Degree in Taxation from the University of Tulsa.  He
is a member of the Forensic and Valuation Services section,
and the National Association of Certified Valuation





Dan Skerbitz, CPA

25+ Years
Tax & Consulting
Phone: 918-628-0500
Dan began his career in public accounting in 1989
with an international accounting firm and has been
with S+O since 2008.  He provides tax planning for
business owners in various industries including
manufacturing, real estate, medical services and
technology.  In addition, he holds the Not-for-Profit
Certification from the AICPA, and his areas of expertise
are nonprofit taxation, clergy, churches and religious
organizations.  He is the leader of the firm’s Religious
Organization practice and also oversees the firm’s
Client Accounting Services practice.  Dan is a graduate
of Oral Roberts University and currently serves on the
Alumni Foundation Board of Directors.





Gordon Tarman II, CPA

20+ Years
Tax & Consulting
Phone: 918-628-0500
Gordon began his career in public accounting over 20
years ago with an international accounting firm. He serves
clients in many industries, including commercial,
nonprofit, oil & gas, real estate and financial
institutions. His experience in the tax area makes him
uniquely qualified to lead the firm’s tax department. He is a
member of various professional organizations and is the
Treasurer for the Will Rogers High School Community
Foundation.  Gordon received his Bachelor’s and Master’s
Degrees of Accounting from Oklahoma State University.





Kirk Vanderslice, CPA

15+ Years
Audit & Consulting
Phone: 918-628-0500
A Tulsa born native, Kirk started his career in public
accounting with Stanfield & O’Dell, P.C. in 1998.
He now has over 15 years of audit and consulting
experience.  His expertise includes managing and
supervising audits of manufacturing entities, services
entities, nonprofit organizations, and governmental
entities, including review of internal controls.  Kirk
is a member of the Downtown Tulsa Rotary Club.  He is
a graduate of the University of Kansas.


Craig Legener, CPA (Senior Consultant)

40+ years
Audit & Consulting
Phone: 918-628-0500
Craig joined Stanfield & O’Dell in 1981.  His
in-depth expertise includes managing and supervising audits
of local governments, exempt organizations and employee
benefit plans.  A graduate of University of Wisconsin,
Milwaukee, Craig’s involvement in various professional
organizations includes service on the Peer Review
Committees for the Oklahoma Society of CPAs.

Sandra Siegfried, CPA (Senior Consultant)

35+ years
Tax, accounting and consulting
Phone: 918-628-0500
Since joining Stanfield & O’Dell in 1976, Sandy has
gained extensive expertise in serving Christian
organizations, from neighborhood churches to international
ministries.  She is active in Christian-related
business societies and is the past-president of the
Oklahoma Society of CPAs and other professional
organizations.  Sandy brings broad expertise to our
clients, especially in all areas of taxation.  She is
a graduate of the University of Tulsa.