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About Us

Our firm is a full service accounting and consulting firm. We cater to a wide variety of clients ranging from individuals to medium-sized businesses.

Our staff accountants and partners specialize in retirement planning, business consulting, investments, estates and trusts, business valuations and personal financial planning.

Of course, in addition to our specialty areas, we also provide tax and accounting services, including tax planning and tax return preparation, auditing, and bookkeeping.

Our firm is an equal opportunity employer.

Marshall & Reumont CPAs. is committed to providing a complete range of professional tax and accounting services, at affordable fees. We pledge to create an environment that will cause every one of our clients to view us as a trusted business advisor.

Our full-service accounting firm is well established and is ready to serve you. Since our inception, we have grown continuously by providing a wide-array of professional services. Let us know how we can serve you. We're here to help.


Our Mission

Our mission is to help clients maintain financial viability in the present, while taking a proactive approach to achieve future goals. This requires open communication to reach an understanding of our clients' needs through research and sound analysis. Marshall & Reumont CPAs is dedicated to meeting these goals with high standards of excellence and professionalism. We have been a staple of the area's business community for years, and pride ourselves on the level of esteem we have earned.

Our dedication to hard work has earned the respect of the business and financial community in and around the area. We believe this to be a direct derivative of our talent and responsiveness to our client base. Whether you are a current or prospective client, rest assured that individuals and businesses who choose Marshall & Reumont CPAs receive competent and timely advice.

Our Team

James Marshall, CPA (301) 622-1200 Masters of Science Degree in Taxation from The American University Kogod School of Business

James Marshall has over 20 years experience as a CPA bringing valuable solutions to both large and small businesses in over 25 industries. James began his career at Price Waterhouse LLP in September 1992 as a Staff Auditor in Baltimore office. He was responsible for the audit and review of financial statements and providing recommendations in internal controls to audit committees. A few years later, James joined the tax department where he was responsible for tax consulting and tax compliance for corporations, partnerships, individuals, and non-profit organizations. James was then selected to join the PricewaterhouseCoopers National Tax Office in Washington DC to focus on developing innovative tax and accounting planning strategies for large and small business – including the owners. Based upon his technical expertise, James later became the primary tax advisor for an Ultra Net Worth individual in the Washington DC area. In June 2008, James left PwC to start J Marshall & Associates, a CPA firm focusing on small business. In August 2018 James partnered with David Reumont and started Marshall & Reumont CPAs.

James graduated from Penn State University with a BS Degree in Finance and a BS degree in Accounting. James has a Masters of Science Degree in Taxation from The American University Kogod School of Business.

David A. Reumont CPA CFP CVA (301) 622-1200 x 112 Bachelors of Science in Mathematics from St. Mary's College of Maryland

Dave has a Bachelors of Science degree from St. Mary's College of Maryland, having majored in mathematics. He also attended the University of Maryland for additional education and training in accounting, auditing, law and computers. He has more than thirty years of experience in providing public accounting, financial and consulting services to privately held companies and their owners. He previously was a partner with a large local firm now located in Bethesda, Maryland, then served as Chief Financial Officer in private industry before starting his own practice in 1991.

Dave has extensive background in wholesale/retail, construction, printing, manufacturing, government contracting, and professional service industries. He specializes in the business service area, providing solutions for tax, accounting, computer and financial planning services for individuals and their businesses. He also has experience in accounting and tax for trusts and estates, and in planning for the elderly client.

Dave is a certified public accountant, certified financial planner and certified valuation analyst. He is a member of the American Institute of Certified Public Accountants, various state CPA societies, the Institute of Certified Financial Planners, the International Association of Financial Planners and National Association of Certified Valuation Analysts.

Diane Reumont, CPA, MBA

Diane received her Masters of Business Administration from the University of Maryland's Robert H. Smith School of Business. After many years with a large communications corporation she received her CPA and joined Reumont CPA, PC.

Diane is a QuickBooks Proadvisor and specializes in training small business clients in the use of their accounting programs, helping them to better manage their business.

Diane's has extensive experience and specializes in estates and trusts.

Samba J. Wurie
Senior Accountant Certified Financial Planner

Samba is a graduate of St. Mary's College of Maryland with a degree in Economics. Samba is a certified financial planner as well as a Quickbooks ProAdvisor. Since joining Reumont CPA, PC thirteen years ago, he has gained extensive experience in payroll tax returns, Maryland Personal Property tax returns, as well as corporate and individual tax returns.

David Reumont V

David graduated from St. Mary's College of Maryland with a Bachelor's degree in Economics. With over eleven years of accounting experience, David is the individual tax return specialist at MARCPA. He also works with clients to assist with business accounting, individual and business tax planning and personal property returns.

Mari Slobounov
Firm Administrator

Mari is the Firm Administrator for Marshall & Reumont CPAs. She graduated from the University of California, Irvine with a degree in Psychology and Criminology. She joined MARCPA eleven years ago with experience in sales and marketing after working as a marketing representative for a leasing company. Mari is a Quickbooks ProAdvisor and works remotely in our Wisconsin satelite office. She is responsible for all firm accounting, billing, marketing, and web building. Feel free to contact Mari with any billing questions, for copies of your tax returns or for assistance with our website.

Christine O'Connell - Office Manager (301) 622-1200 BS Psychology - University of Maryland

Christine was born and raised in Maryland and graduated from University of Maryland in May 2016 with a degree in Psychology. She has been an integral part of Marshall & Reumont CPAs for four years. She keeps the office running smoothly while managing daily operations and client communication.


Luna is the mascot and guard dog for MARCPAs. She is the granddoggy of the Reumont's and is adored by not only the firm but the other businesses in the building. She loves treats and is a master at rolling over.