- American Institute of Certified Public Accountants
- New Jersey Society of Certified Public Accountants
- American Institute of Certified Public Accountants - Personal Financial Planning Section Member
- New Jersey Society of Certified Public Accountants - State Tax Committee and Personal Financial Planning Committee
- Member of the Board of Directors of Woodards Concrete Products, Inc.

Bachelor of Science in Accounting - Rutgers University, Newark, New Jersey

In January 2006 David and Timothy Sullivan formed the firm of Scheidel & Sullivan, C.P.A., L.L.C. a full service public accounting firm offering services in the areas of accounting, auditing, tax planning, preparation and research, valuation, estate planning and financial planning. In July of 2006 David was integral in the planning and formation and start up of Sierra Financial Advisors, L.L.C., a registered investment advisor.