Back to top

About Us

Our Firm

The 23 year history of Rizzo & Company, P.C. is built upon a tradition of service, technical expertise, and innovative thinking to meet the needs of a rapidly changing world. The experience and academic credentials of the entire staff provide our clients with the expertise of a larger firm, while our commitment to superior customer service offers a personal one-on-one approach.


Our History

Nadine Ferguson and Mary Ellen Rizzo founded Ferguson Rizzo and Associates on July 1, 1993. For the first two and a half years Nadine and Mary Ellen built the company to over 250 tax and corporate clients. In December 1995, Nadine Ferguson retired to spend more time with her family. Since Nadine's retirement, the firm has continued to grow to over 500 clients. In 1999, the firm's name was changed to Rizzo & Company, P.C. (RCO). RCO provides clients with accounting (bookkeeping), business and tax consulting, tax preparation, representation before various government agencies and payroll services.

For futher information, please contact us at:

  • Rizzo & Company, P.C.
  • 1 East Northwest Highway
  • Suite 108
  • Palatine , IL 60067
  • Telephone: (847) 359-5050
  • Fax: (847) 359-5079

Our Team

Mary Ellen Rizzo, CPA - President 847-359-5050 ext. 118

Mary Ellen graduated from Trenton State College (The College of New Jersey) in 1979. She became a Certified Public Accountant in 1980. Her professional career began in 1978 as an Internal Revenue Agent. The experience and training provided Mary Ellen with a strong foundation in understanding the federal tax laws. Since 1982, Mary Ellen's public accounting experience includes working for an international certified public accounting firm, a local CPA firm, and her own firm which was founded July 1993. Mary Ellen has developed an extensive background covering a broad spectrum of personal and business issues that she applies to the individual client's situation.

Sal Rizzo, Benefits & IT Manager 847-359-5050 ext. 111

Sal graduated from Trenton State College (The College of New Jersey) in 1976. He joined RCO in April 1995. Sal provides our clients with human resources and employee benefit consulting services. In addition, Sal is also responsible for the firm's IT functions and day-to-day office management.

Prajkta Maindarkar, CPA - Staff Accountant 847-359-5050 ext. 117

Prajkta is a Certified Public Accountant with four years of tax and accounting experience in the public accounting sector. She enjoys working with the clients assisting them with their tax, accounting, and financial concerns. She has earned a Master's in Accounting and a Master's in Business Administration. Prajkta is an Intuit Certified QuickBooks User as well as a Certified Accounting Technician from the Institute of Chartered Accountants of India. Prajkta firmly believes there is no substitute for hard work and attention to detail. Integrity, orderliness, diligence, and patience are her strong virtues.