Business Details
44 Years
experience
Trusted Accounting & Consulting Services in Washington, DC
Williams Adley has been a trusted leader in accounting, auditing, and consulting services for over four decades. Founded in 1982, we specialize in delivering tailored financial solutions to federal, state, and local governments, as well as select commercial clients. Our team of certified professionals combines deep industry expertise with a commitment to integrity, providing value-added services that address complex financial challenges.We prioritize long-term client relationships, leveraging our extensive network to offer first-class support in audit and assurance, cybersecurity risk management, and management consulting. Recognized as a 2025 Top 100 Firm by Accounting Today, we remain dedicated to operational excellence and ethical standards that exceed client expectations.
Services
Audit and Assurance
Cybersecurity Risk Services
Management Consulting
Financial Audits
IT Security Assessments
Grants Advisory
Foreclosure Claims Processing
Details
- Year established: 1982
Highlights and features
- We offer 40+ years of specialized expertise in government financial management.
- Our cybersecurity team holds certifications including CISA and CISSP.
- Recognized as a 2025 Top 100 Accounting Firm by Accounting Today.
- We provide tailored solutions for federal grant compliance and audits.
- Our leadership team includes CPA, CGFM, and CFE-certified professionals.
Services
Audit and Assurance
Williams Adley conducts comprehensive financial audits and performance assessments for government agencies. Our GAO Yellow Book-compliant services enhance accountability through data-driven analysis and customized reporting. With expertise in federal financial statement audits since 1990, we help clients recover millions annually through rigorous compliance checks and fraud detection.
Cybersecurity Risk Services
Our cybersecurity team provides FISMA compliance audits and risk assessments for federal agencies. Using SSAE 18 and NIST frameworks, we evaluate IT controls and develop mitigation strategies. Services include security program reviews, vulnerability assessments, and incident response planning to protect critical government systems.
Management Consulting
We offer strategic consulting for federal financial management challenges. Our experts specialize in grants advisory, business process improvement, and regulatory compliance. With deep knowledge of FedGAAP and HUD requirements, we deliver cost-saving solutions for accounting operations and program management.
Foreclosure Claims Processing
Williams Adley manages FHA foreclosure claims processing for the Federal Housing Administration. Using proprietary workflow tools, our team processes tens of thousands of claims annually, ensuring compliance with federal housing regulations while providing real-time financial reporting for insurance fund management.
IT Internal Audit
Our IT audit services assess cybersecurity controls and system vulnerabilities for government agencies. We evaluate entity-wide and application-specific security measures, providing actionable recommendations to strengthen digital infrastructure against emerging threats while maintaining compliance with federal standards.
People
Kola Isiaq
Managing Partner
Kola Isiaq leads Williams Adley's strategic vision, overseeing operations across audit, consulting, and cybersecurity divisions. With decades of experience in public sector financial management, he focuses on fostering client relationships and driving innovation in federal audit methodologies.
Jocelyn Hill
Partner, Management Consulting
Jocelyn Hill specializes in federal grants management and performance improvement. As Program Manager for contract vehicles, she ensures compliance with GSA OASIS requirements while delivering consulting solutions that optimize government financial operations through data-driven strategies.
Tony Wang
Partner, Cybersecurity Risk Services
Tony Wang leads cybersecurity initiatives at Williams Adley, combining technical expertise with regulatory knowledge. He directs FISMA compliance audits and develops risk mitigation frameworks to protect sensitive government data across civilian and defense agencies.
Leah Southers
Partner, Audit and Assurance
Leah Southers oversees financial audit engagements for federal clients. With expertise in CFO Act compliance, she manages teams conducting financial statement audits and performance assessments to enhance transparency and accountability in government spending.
Shabbir Moosvi
Director, Management Consulting
Shabbir Moosvi specializes in federal accounting standards and regulatory compliance. He leads consulting projects focused on grants management, financial reporting, and process optimization to improve efficiency in government operations.
Questions
What government agencies does Williams Adley serve?
We work with civilian and defense federal agencies, state/local governments, and select commercial clients through GSA contract vehicles like OASIS Small Business.
How does Williams Adley ensure audit quality?
Our audits follow GAO Yellow Book standards with customized procedures, advanced data analysis tools, and 35+ years of federal financial management experience.
What cybersecurity certifications do your staff hold?
Our team includes CISA, CISSP, and CFE-certified professionals who specialize in FISMA compliance and enterprise risk management frameworks.
Can you handle complex federal grant audits?
Yes, we provide grants advisory services including compliance reviews, cost recovery analysis, and performance audits for federal grant recipients.
How do you support FHA foreclosure claims processing?
We use proprietary workflow tools to process 20,000+ FHA claims annually, ensuring compliance with HUD requirements while providing real-time financial reporting.
