Our Passion is Enhancing the Lives of Our Clients and Team

Lynda Ramming

I am a CPA with 23 years of experience, 17 of which I worked for Stanfield & O'Dell, P.C. (now Stanfield & Brim).

Dawn Seay

I have worked for Core Group since November 1, 2001 as a bookkeeper.

Chelsea Powers

I joined Stanfield & Brim in March of 2017 as a client relations manager. I graduated from Cameron University with a Bachelor’s of Accounting.

Belinda Osborne

I was born and raised in Oklahoma. I received my BA from Cameron University in Lawton, OK. I have worked in sales and/or accounting for over 30 years. I’ve been with Stanfield & Brim almost 2 years and thoroughly enjoy working with the Lawton, Ft. Sill community.

Shelley Nowlin

I joined the Core Family March 2013. I have been doing payroll since 2007, starting with a large payroll company. I enjoy working for a small company doing payrolls for other small businesses. I look forward to helping my clients with the tough payroll questions.

Elizabeth Long

I am passionate about helping people and genuinely enjoy building relationships with my clients. I grew up in my mother’s accounting office and always knew Public Accounting was my calling.

Sabrina Holloway

I joined Core in June 2011 as the Tulsa bookkeeper. I am responsible for all of the Tulsa client’s monthly bookkeeping, as well as a few Oklahoma City clients. I am also the tax processor in Tulsa and I perform a variety of administrative duties around the office as well.

Christian Brim

"I graduated from the University of Oklahoma with a Bachelor of Accountancy. I enjoy spending time with my wife and three children, and the very occasional golf game. In addition to firm administration, I handle Business Advisory services and business succession planning for our clients. Mostly, I enjoy watching our clients successfully grow their businesses."

Nathan Brim

I am a problem solver by nature and enjoy new challenges on a daily basis. I have been married since 2005 and have a son and a daughter. Our family loves to travel and are constantly looking for new adventures! I am an active member of the Entrepreneur’s Organization and I am a continual learner. I like meaningful connections with people – yes, I would recommend it.

Alicia Brooksher

Alicia Brooksher joined Core Group in November of 2010 as a Jr. Payroll Specialist. When she is not working she enjoys spending time with her husband and young son. In her spare time she enjoys scrapbooking, going to car shows and watching her husband race the quarter mile. My favorite movie of all time is: The Wizard of Oz

Gloria Dattolo

I joined Core Group in May of 2019, as a bookkeeper. I graduated from the University of Malta with a Bachelor of Commerce (Hons) in Banking and Finance. I hail from the tiny island of Malta and moved to the US in 2005. I enjoy spending time with my son, painting and dancing. Travelling is also another interest of mine.

Shelli Dixon

I started my first payroll job in 1996 while in college and graduated from East Central University with a bachelors in Business Administration. I joined Core in the payroll department in 2007. I love what I do and enjoy helping small businesses with their payroll issues and problem solving. I have been married for 16 years and we have 2 wonderful children.

Jeremy Doorn

I graduated from the University of New Mexico in 2001 with a bachelors in Business Administration. I moved to Tulsa in 2007 and started working at Core in 2009. I do a little bit of everything at the office from bookkeeping to managing client relationships. On the weekends, I enjoy watching just about any sport that is on TV, especially basketball and football.

DaRenda Hanson

In my free time…oh, wait…I’m married with two children. I don’t have free time. I was born and raised in Oklahoma and bleed crimson and cream through and through. On my first date with my husband I asked him a simple question, “OU or OSU?” Lucky for him, his answer was “OU.” He still doesn’t believe me that we wouldn’t be married today if he had answered the latter.

Jeff Henderson

I've worked here since 2003. My responsibilities are providing financial statements, tax return preparation and general business consultation to our clients. As a financial professional for over 30 years it is very rewarding to me to be able to share my expertise and experience. My wife is a registered nurse and we enjoy traveling and being with our children and grandchildren.

Jennifer Herrs

I came to Core in May 2012, I enjoy partnering with clients to build lasting relationships that benefit them both professionally and personally. My true passion is documenting processes and working to find the best way to get things done.

Anita Heyd

I am from OKC and went to Moore Schools for 12 years. I am happy to be a part of the Core Family and look forward to coming to work every day because I enjoy the people I work with in the office as well as the many clients I get to talk to on the phone and in person.