Christopher Ikeda-Nash CPA is associated with Chang & Associates, a full-service accounting, tax, and consulting firm based in Berkeley, CA. The firm serves closely-held businesses and their owners, along with high-net-worth individuals, across the East Bay and San Francisco area.

Its work includes bookkeeping, accounting, payroll, and tax services, with additional consultation related to ongoing financial improvements. The source materials describe support for business and individual tax needs, accounting and bookkeeping services, and access to financial resources such as tax calendars, refund tracking, calculators, and tax links.