About Our Firm

For more than 90 years

Sorren has offered innovative expertise in complex financial solutions through unparalleled services grounded in trustworthy advice.

As a Maryland-based full-service certified public accounting firm, Gorfine, Schiller & Gardyn–now part of Sorren–offers a wide range of accounting and consulting services to clients of all sizes. Although we have grown in size, we still employ the traditional business practices of a small company. 

As problem solvers with an entrepreneurial drive, we are always committed to our clients’ success.

About GSG

Team Member Knowledge

Team member Knowledge

Sorren audit, tax, accounting, consulting, certified fraud examiners (CFE) and business valuation experts are certified, credentialed and trained in the most current industry laws, regulations and techniques. Our team participates annually in continuing professional education seminars and classes. Our commitment to training provides our clients the benefit of the highest degree of knowledge in the industry.

Strategic Affiliation

Strategic Affiliation

This firm is a member of Allinial Global – an accounting firm association of legally independent accounting and consulting firms with offices in North America and throughout the world through international members and partnerships. Our membership gives us access to additional knowledge, resources and training opportunities, which ultimately benefit our clients, especially those with business transactions in other states and throughout the world.

Research and Technology

GSG R&D

Sorren uses the latest research techniques and technology in every consulting engagement. By utilizing current industry methodologies, we are able to offer our clients more meaningful information in a more cost-effective manner.

Excellent Reputation

GSG Excellent Reputation

Sorren has spent over 90 years building client relationships.  Our commitment to superior client service is unmatched in the industry and is woven throughout every aspect of an engagement.  This philosophy is paramount to our business mission and is proven by our extensive list of long-term clients.

Our History

2000

Growth through merger

First GSG Merger

Our history changed in 2000 when Schiller, Holinsky and Gardyn, merged with Harry B. Gorfine, and created Gorfine, Schiller & Gardyn P.A.

Successor

November of 2004

Becoming the successor

GSG Becoming the successor

In November of 2004, Gorfine, Schiller & Gardyn became the successor accounting firm of the former Graber & Ross Chartered.

More services offered by GSG

2008

Expanded services

GSG Expanded Services

Gorfine, Schiller & Gardyn and Grabush, Newman & Co. merged in 2008 to provide a comprehensive menu of audit & accounting, tax, consulting, small business services, and business valuation & litigation support services for businesses and individuals throughout Maryland. 

7th largest CPA firm in Baltimore, MD

Present day

7th largest firm in Baltimore County, and now part of a national firm: Sorren

GSG-group-small-file

Today, Gorfine, Schiller & Gardyn enters an exciting new chapter as part of Sorren, a top 50 national tax, accounting, and advisory firm. Recognized as the 7th largest firm in Baltimore by The Baltimore Business Journal’s Book of Lists and ranked #231 on INSIDE Public Accounting’s Top 500 Firms for 2025, GSG brings a strong legacy of growth, trusted service, and deep community roots to this partnership. As we move forward as Sorren, we remain guided by the same commitment that has defined our firm for generations: providing thoughtful, personalized service and helping our clients succeed with confidence.