Colleen A. Shanahan-Warren

P: 717.393.5696

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Lancaster Office
1869 Charter Ln., Ste. 301
Lancaster, PA 17601-5898
P: 717.393.5696
F: 717.393.5699

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Colleen is an audit partner located in the Lancaster office. She has over 25 years of experience in public accounting and private industry. She has served a variety of clients and is known for providing her clients with practical, useful business advice with an emphasis on close, personal service.

Prior to joining ParenteBeard she was employed by the national accounting firms of Deloitte & Touche in New York and McGladrey & Pullen LLP in North Carolina. Specifically, Colleen is responsible for audits of employee benefit plans and for serving closely held business clients, automobile dealerships, self-insurance funds, construction entities and manufacturing companies.

She is an active community leader, and has previously served on the boards of Lancaster City Police Foundation and Heart of Lancaster Regional Medical Center.


  • Certified Public Accountant in Pennsylvania
  • BS – Business Administration, magna cum laude, Manhattan College

Professional Affiliations

  • American Institute of Certified Public Accountants
  • Pennsylvania Institute of Certified Public Accountants