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Anthony Coroneos | Accounting Manager
Anthony Coroneos is an accomplished accounting professional with over 15 years of experience spanning nonprofit, logistics, retail, and professional services. As an Accounting Manager, he specializes in bank and credit card reconciliations, accounts receivable and payable, and payroll journal entries. Anthony is recognized for his precision, efficiency, and ability to streamline processes, playing a key role in month-end closings and financial reporting for a diverse client base.
Earlier in his career, Anthony held accounting roles at the American Museum of Natural History and Masterpiece International, where he developed deep expertise in expense management, deferred revenue reporting, and audit preparation. He also led credit and collections functions at Fauna Foods and Twin America, successfully managing high-volume receivables and building strong customer relationships.
Before entering the corporate finance world, Anthony was a small business owner, operating Cup O Joe's in Greenpoint, Brooklyn.
He holds a bachelor’s degree from St. John’s University and is proficient in a range of accounting platforms, including NetSuite, QuickBooks, Oracle, and SAP Concur.
We understand that choosing the right financial partner is a big decision. That’s why we’ve compiled answers to some of the most common questions we receive, from how we work to who we serve.
Explore the FAQs below to learn how Expert Controllers can support your business at every stage of growth.
Who We Are
Smart solutions for Finance
and Administration
Expert Controllers, a division of Professional CFO Inc., provides scalable financial and operational solutions for service-based businesses. We understand the unique needs of growing companies and serve as a reliable partner in all areas of back-office operations.
Theresa Walsh | Accounts Payable Manager
With over a decade of experience in financial operations, Theresa leads the accounts payable function with precision, consistency, and a strong commitment to internal controls. As Accounts Payable Manager, Theresa oversees vendor relations, invoice processing, and payment cycles across multiple clients and systems.
Theresa is known for streamlining AP workflows, and improving month-end close timelines. Her expertise spans various accounting platforms including QuickBooks.
Theresa earned her MBA and BS in Accounting from St. John’s University.
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Meet the Founder
Ann Marie Leonard, MBA, founded Expert Controllers after a distinguished career exceeding a decade as a senior finance executive.
With 30+ years of expertise in financial administration—encompassing reporting, treasury, commercial lending, real estate, and audit—Ann Marie brings unmatched knowledge and dedication to every client engagement. Before launching her firm, she worked at JPMorgan Chase as a commercial lender and internal auditor, and later served as Senior Vice President of Finance & Operations for a $30 million Management Service Organization (MSO).
Ann Marie holds an MBA from Adelphi University and a BS in Finance from St. John’s University.
Her passion lies in empowering business owners to understand cash flow, implement best practices, and build teams and systems that support long-term growth and success.
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What types of businesses do you work with?We specialize in serving small to mid-sized service businesses with one or multiple locations, including but not limited to dental and medical practices, law firms, and commercial landlords.
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Do you offer part-time controller services?Yes, our services are designed to be flexible and scalable. We provide fractional controller support that grows with your business.
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What accounting software do you use?We primarily use QuickBooks Online. We handle the setup and manage access, making it easy for you to stay informed and compliant.
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Can you help with payroll?Absolutely. We coordinate payroll using trusted third-party providers and ensure all related regulations are followed.
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How do you get started?We'll walk you through everything we need—from business registrations to software access, including bank and payroll logins. You can send bills via email or mail, and we take care of the rest.