Cathy Seiler became a valued member of Brinker Simpson as a Partner in October 2014, enriched by over 25 years of industry experience. Before this, she held significant roles, including Senior Manager at a national accounting firm and Director of Quality Control at a large regional firm.

Her expertise spans diverse services, such as sophisticated audit, accounting, business advisory, and tax services. Cathy's client base covers various sectors, including manufacturing, wholesale distribution, construction, professional services, nonprofits, governmental entities, and employee benefit plans.

Cathy resides in Lafayette Hill, PA, with her husband, Marc.

Areas of Concentration

Audits of Non-Public Companies
Audits of Nonprofit Organizations
Audits of Local Governments
Audits of Employee Benefits Plans
Quality Control and Peer Review
Forensic and Litigation Engagements
Strategic Tax Planning and Compliance for Companies and Individuals

Industries Served

Wholesale Distribution
Construction Contractors
Professional Services and Consulting
Local Government and Municipal Authorities
Nonprofit Organizations
Homeowners’ Associations


Certified Public Accountant - Pennsylvania, New York and Florida
Bachelor of Science in Business Administration and Accounting, Temple University

Memberships and Affiliations

American Institute of Certified Public Accountants (AICPA)

Pennsylvania Institute of Certified Public Accountants (PICPA)

- Government Accounting and Auditing Thought Leadership Committee
- Employee Benefit Plans Thought Leadership Committee
- RAB Subcommittee

Federation Early Learning Services, Chair, Operation and Development Committee

Beiteinu, Treasurer