Support Staff

Support Staff

Mary C. Seidel — Johnstown, PA — Kotzan CPA & Associates P.C.

Mary C. Seidel

Office Administrator

Mary has been the office manager with Dennis P. Kotzan, CPA, since 1994, coming from a local financial institution. In addition to overseeing the daily operation of the office, she processes client payrolls, including quarterly and year-end reports, tax and sales tax return preparation, and client bookkeeping. She is proficient in QuickBooks accounting software, providing client set-up and assistance.

Christene J. Ringler

Accounting Associate

Christene is a graduate of Cambria-Rowe Business College where she majored in Business Administration-Accounting/Microcomputer Applications and earned an Associate’s Degree in Specialized Business. Christene began her career in public accounting where she worked for 17 years before transitioning into municipal government for 8 years.  She returned to public accounting, joining the firm of Kotzan CPA & Associates, P.C. in 2021. She performs accounting, payroll, depreciation, individual and corporate tax services, and financial statement preparation. Christene is proficient in QuickBooks, providing training for clients, client set-up and assistance.

Tammy R. Walko — Johnstown, PA — Kotzan CPA & Associates P.C.

Tammy R. Walko

Accounting Associate

Tammy graduated from Cambria Rowe Business College with an Associate in Specialized Business Degree in Accounting. She joined the firm of Kotzan CPA & Associates, PC in 2022 upon the retirement of her former employer, a Johnstown CPA, with whom she had been employed since 1987.  Tammy processes client payrolls including quarterly and year-end reports and sales tax returns. She also provides client bookkeeping, financial statement preparation, and individual taxation services. 

Kimberly P. Nagy — Johnstown, PA — Kotzan CPA & Associates P.C.

Kim P. Nagy

Administrative Assistant

Kim, a Johnstown native, is a part-time administrative assistant who began with Kotzan CPA & Associates in 2021. She is responsible for multiple administrative duties including file maintenance, audit report assembly, scanning of tax client information, and client billing. In the community, Kim volunteers her time working with high school students by helping them discover their vision for future endeavors and assists in finding scholarships and/or job opportunities to make those ventures a reality.

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