Accountgevity- Long Term Commitment to You! Diane R. Berg, CPA, PLLC. is a licensed Certified Public Accounting firm in Flagstaff Arizona that has provided for over thirty years serving Northern Arizona in audit, tax, accounting and bookkeeping to individuals, business, non-profit, charter schools, and fire districts. Personal attention is always maintained to achieve ACCOUNTGEVITY- LONG-TERM COMMITTMENTwhile providing efficient, timely, and cost effective services. • thirty years experience • Auditing • bookkeeping • non-profit, charter schools, and fire districts • Personal attention • cost effective Stop by today and see the difference commitment makes!