Carl Thrasher, CPA


Carl graduated from the University of Texas at Austin in 1974 with a Bachelor of Business Administration in Accounting. He became a CPA in 1976 and has been in the practice of public accounting his entire career. He founded Thrasher & Associates, PC in 1996.

Carl is a member of the American Institute of Certified Public Accountants and the Texas Society of Certified Public Accountants. He has served in his community as an adult leader in the Boy Scouts of America and as Treasurer and Vice President of Christian Community Service Center in Houston. Carl taught Introductory Accounting at Austin Community College and served as volunteer lecturer to high school students through Junior Achievement.

Mike Whelen, CPA


Mike Whelen is a principal with Thrasher and Associates who has been with the firm since its formation in 1996.

Mike draws upon a broad range of knowledge and experiences to solve a variety of problems for small businesses and individuals with tax filing and compliance issues, including representation before taxing authorities. Mike's practice also involves assisting clients with their general accounting needs.

Mike earned his Bachelor of Science degree in Accounting from Louisiana State University. He holds a Master of Taxation degree from Bentley College, in Waltham, Massachusetts and has worked in public practice for over 25 years.

His professional affiliations include the American Institute and Texas Society of Certified Public Accountants. An avid tennis player, Mike enjoys traveling with his wife and their young adult children.

David Tran, CPA

David started working at Thrasher & Associates, P.C. in January 2014. His duties include preparation of income tax returns for individuals, corporations, partnerships, private foundations, estates and trusts. He also provides income tax planning services, performs federal tax research, and provides other accounting and consulting services to clients of the firm.

Prior to joining the firm, David worked as an accountant for a catering company for 14 years. He graduated with honors from University of Houston, Downtown with a Bachelor of Business Administration in Accounting.

David is certified to practice public accounting in Texas. He is a member of Beta Gamma Sigma and Texas Society of Certified Public Accountants. His hobbies include reading, playing badminton, running and traveling.

Tommy Nguyen, Staff Accountant

Tommy joined Thrasher & Associates, P. C. in November 2014 after beginning his career with a small public accounting firm which focused on individual, business, and trust taxation. He graduated from the University of Houston, Downtown with a Bachelor of Business Administration in Accounting and received his Master of Business Administration from Sam Houston State University.

Tommy is a member of Beta Gamma Sigma, Phi Kappa Phi, and Texas Society of Certified Public Accountants. He resides in Houston with his wife, Lucy, and enjoys fishing, exercising, watching sports and spending time with his family.

Sue Redden, Associate Accountant

A native of Dallas, Texas, Sue moved to Waco, Texas in 1972 where she attended Baylor University majoring in Mathematics. She then moved to Houston in 1978. After moving to Houston, Sue attended the Dale Carnegie Training® Institute and worked in the accounting departments in a variety of industrial and service companies. She joined Thrasher & Associates in 1996 and offers our clients over 30 years' experience in accounting and bookkeeping.

Her client base includes high net worth individuals, entrepreneurs, closely held businesses, partnerships and businesses in a wide spectrum of industries including the fields of Oil and Gas, Builders' Supplies, retail and wholesale, entertainment, medical and interior design. She also provides our clients accounting software support including Quickbooks®, Sage50® and Design Manager®.

Sue is a member of The American Institute of Professional Bookkeepers and National Association of Professional Women. She is also a member of First Baptist Church of Houston, supports a variety of charities, enjoys traveling, and is the proud mother of three daughters and three grandchildren.

Sheila Tanner, Office Manager

Sheila started working with Thrasher & Associates, P.C. in January 2017. She is a native Houstonian and attended University of Houston. She has over 20 years of management experience performing confidential and detail oriented tasks in the both Legal and Financial fields.

Sheila has a passion for service and is heavily involved in the community. She enjoys sharing her time between her non-profit involvement and friends and family.