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Colleen S. Vallen, CPA, CFF


Colleen is a partner in the firm’s Valuation and Forensic Services practice and is based in the Philadelphia office. As an expert in the field of forensic and investigative accounting, Colleen has focused her attention on forensic and fraud investigations, the preparation of financial damage analysis and litigation support.

Colleen is highly experienced in the analysis, investigation and review of financial documents. Other responsibilities have included case planning and management, financial and economic analysis, expert report preparation, oral presentation of findings as well as assistance with discovery, interrogatories and depositions.

Prior to joining the firm she worked for a litigation consulting and a forensic accounting firm and with a Big 4 accounting firm as an auditor.

Colleen is an adjunct professor at Villanova Law School. She has been engaged by law firms, legal, banking and utility associations, insurance companies, and other associations to speak on a variety of topics, including business interruption, financial document analysis and fraud. Colleen has also provided continuing education to attorneys and individuals through various seminars, including a full day class on fraud geared to the banking industry.

Colleen earned a Bachelor of Science degree in Accounting from Rutgers University. Her education has been supplemented by various continuing education courses with an emphasis on fraud investigation, forensic accounting, financial analysis and business interruption.

Additionally, Colleen was selected as a recipient of the Philadelphia Business Journal’s 2014 Women of Distinction award. She is a member of the Board of Directors of The Forum of Executive Women, the American Institute of Certified Public Accountants (AICPA) and the Pennsylvania Institute of Certified Public Accountants (PICPA).


Nov 21, 2014

Partner Colleen Vallen shares her insight on the state of women in business in this Philadelphia Business Journal article. more

Jan 18, 2016

Philadelphia Magazine shines the spotlight on our Driving Your Business: Women at the Wheel event in Philadelphia more

Jan 12, 2016

The Philadelphia Tribune features Driving Your Business: Women at the Wheel more

Jan 12, 2016

Reading Eagle Highlights Citrin Cooperman's Women at the Wheel Program more

Aug 12, 2016

Colleen Vallen Elected to The Forum of Executive Women's Board of Directors more

Sep 01, 2016

Partner Colleen Vallen discusses fraud analysis in Commerce magazine more


Aug 10, 2017

American Bar Association Annual Meeting more

Jan 19, 2017

Philadelphia Driving Your Business: Women at the Wheel more

May 19, 2016

Practising Law Institute Basics of Accounting for Lawyers 2016: What Every Practicing Lawyer Needs to Know more

May 18, 2016

New Jersey State Bar Association Annual Meeting and Convention more

May 17, 2016

Using a Financial Expert in Commercial Litigation more

Apr 12, 2016

Introduction to Accounting for Lawyers CLE Breakfast Event more

Jan 21, 2016

Driving Your Business: Women at the Wheel in Philadelphia more

May 12, 2014

Practicing Law Institute Webinar featuring Colleen Vallen and Howard Fielstein more

May 15, 2013

New Jersey State Bar Association's Annual Meeting and Convention more

May 13, 2013

Basics of Accounting for Lawyers 2013: What Every Practicing Lawyer Needs to Know more

Apr 25, 2013

Calculation of Economic Damages more

Driving Your Business: Women At The Wheel more