ADDING VALUE FOR OVER 50 YEARS
We’ve gained experience in a wide range of industries, advised both young and established businesses, and helped individuals create their future. The common thread is our belief that CPAs and financial planners should add value to the big picture, not just balance the books. Our Frisco-based team is made up of experts in the field who see the potential in every unique client they work with. Experts who have problem-solved and built success throughout their careers across a broad spectrum of industries. Together, we provide comprehensive and detailed expertise to the people who do business with us.
Brett Mills, CPA/PFS
- Managing Partner
Brett joined the McCarthy, Rose & Mills, LLP accounting firm 16 years ago and was named managing partner in 2018. He is a Certified Public Accountant (CPA) and a Personal Financial Specialist (PFS), and was honored by CPA Practice Advisor as their 2016 40 Under 40 honoree. He also received a 2018 Standing Ovation from the AICPA for his exemplary professional achievement in personal financial planning. A Southern Methodist University graduate with an MIS degree, Brett previously worked as a software engineer for five years. Brett is passionate about identifying the people, processes and technologies that enable our clients to maximize success.
Brian E. Lawyer, CPA
- Assurance Partner
Brian E. Lawyer, CPA, grew up in North Texas and began his public accounting career in 2005 at a regional accounting firm headquartered in Fort Worth, TX. He made the switch to Big 4 in 2012, where he spent five years at EY's Dallas office. Brian eventually took a break from public accounting to serve as the controller for a Dallas real estate company valued at over $6 billion.
After his employer sold the company, Brian started his own consulting business, reigniting his passion for client service, and ultimately bringing him to his dream job at MRM in Frisco, TX. He has a gift for understanding issues from his client's point of view and enjoys serving clients of all sizes, from small nonprofits to large publicly traded companies, and everything in between.
He has been a Certified Public Accountant (CPA) since 2007. His areas of expertise include assurance (audit and attestation), technical accounting (GAAP and SEC), financial reporting, fair value, and complex transactions. He has experience in several industries, including real estate, healthcare, manufacturing/distribution, not-for-profit, and employee benefit plans.
Susie Short, CPA
Susie began her career as an accounting and tax intern for a large local firm in Houston, Texas, while a student at Texas A&M University. After moving to Dallas, Susie concentrated in the tax area at Fox and Company, which is now the national CPA firm Grant Thornton. She also practiced in the private sector as a controller for a venture capitalist, managing the accounting for his six start-up companies. She joined her husband Don in 1986 at Short and Associates, PC. Susie is pleased to join McCarthy, Rose, and Mills, LLP, and continue her love of providing clients with a quality, professional product that they can understand and utilize.
Don Short, CPA
Don is the founder and manager of 35 years at Short & Associates P.C., which merged with McCarthy, Rose & Mills, LLP in 2018. Before starting his practice, Don worked in both public practice and investment banking as an auditor and management advisor. He earned his license as a Certified Public Accountant in 1979, after graduating from Texas Tech University in 1977. His favorite aspect of the profession is advising clients on structuring business opportunities to their greatest advantage. Don’s areas of concentration include real estate, professional services and hospitality operations.
Marianne McDonald, CPA, RICP
Marianne joined MRM in 2022. She has provided tax compliance and planning services to individuals, corporations, partnerships and trusts since 1989. She began her public accounting career with a regional firm in Metairie, Louisiana, became a partner in a small local CPA firm, and later joined a firm in Baton Rouge, Louisiana. Marianne moved to Frisco after Hurricane Ida hit the area.
Marianne has a Bachelor of Science in Accounting from the University of New Orleans and the designation of Retirement Income Certified Professional (RICP) from the American College of Financial Services.
Rob McBride, CPA
Robert McBride, CPA, is a highly accomplished financial professional with a wealth of experience in accounting and taxation. With over 13 years of experience, Rob has successfully guided clients from various industries in achieving their financial goals. He is a graduate of University of Washington and joined MRM in 2022. Prior to joining the team at MRM Rob was a tax professional at RSM McGladrey and CLA.
Andrew H. Clayton, CPA
- Senior Assurance Manager
Andrew H. Clayton, CPA, began his public accounting career in 2009 at a small regional accounting firm in Shreveport, LA, after completing his education at Louisiana Tech University. He has been a Certified Public Accountant (CPA) since 2019. Andrew served as the Shreveport Chapter member of the Emerging CPA Council of the Society of Louisiana Certified Public Accountants, whose mission was to engage, connect, promote, and aspire new CPAs and future CPAs. His areas of expertise are assurance (audit and attestation) and financial reporting. He has experience in several industries, including manufacturing/distribution, entertainment (movie audits), not-for-profit, and employee benefit plans. Andrew is excited to join MRM and is passionate about auditing and identifying ways to help clients grow and maximize their success.