Any Expert.
Every Time.

Versed has unparalleled expertise in assisting litigators across the nation in locating the right expert every time. Whether it is through our huge database or conducting a search on your behalf, we will provide you with an experienced, qualified expert tailored to your case's unique requirements.

Established in 1998, we are a family business with one goal-providing the best and most high-caliber experts for our clients' litigation requirements. We can intimately align ourselves with your organization, understand your objectives, and recommend the best expert suited to fulfilling your specific needs (as opposed to other national companies who make arbitrary expert selections based on generalized needs). Many of our experts have subspecialties and prestigious affiliations, including teaching appointments and scholarly publications. Due to their pedigrees, the opinions of our experts render highly compelling testimony. Beyond our existing panel, we can roll up our sleeves and conduct a no-charge search for your specific needs.

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Finding the right expert to represent you is a serious decision. That's why we offer free consultations to understand your needs, the scope of your goals, and your budget. The next step is easy – drop us a line, and let's start the conversation!

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Meet Our Team


A. Casey O’Rourke, Sr.

Following a 10 year career in sales and sales management at Dictaphone Corporation, Casey founded Rx Transcriptions in 1993 which provided medical transcription services for clinical practices. Rx Transcriptions was acquired in 2015.

In 1998, Casey O'Rourke also founded RX Professional Services, targeting medical experts from academic institutions to differentiate from contemporary services.

While continuing to provide medical experts, Versed has expanded their offerings to include any litigation expert need, including running a search for any need we are unable to fulfill readily from our database.


The Pennsylvania State University - B.S. Business, 1982

Archbishop Carroll H.S.

University of Pennsylvania Wharton Continuing Education

Activities & Affiliations

US Navy Vietnam Era Veteran

Volunteer - S.S. Simon and Jude Parish Religious Education Program

Men of Malvern

Knights of Immaculata


Sean T. Halloran

After twelve years in working in Operations & Corporate Strategy for various technology businesses, Sean joined Versed in November of 2022 to serve as the company’s Chief Operating Officer.

As Chief Operating Officer, Sean is responsible for overseeing operations, processes, and growth planning for the firm. Sean and the leadership team ensure that Versed can maintain its growth and thrive financially and operationally while delivering on Versed’s mission.

Outside of work, Sean and his wife Vanessa have two children, Hunter and Harper. Sean and his family enjoy traveling, seeing live music, golfing, and taking ski trips.


Villanova University - Master of Business Administration

Lafayette College - Bachelors of Economics & Business


Patrick O’Rourke

After 10 years in Financial Services on Wall Street, Pat joined Versed in April 2019 to spearhead the company's Sales and Marketing channels.

Pat oversees all relationship management and new business development endeavors within the firm. He communicates daily with our client base to understand their ongoing needs, and works closely with our staff to ensure that we are delivering on our mission of total customer satisfaction. In recognizing our clients’ needs, we forge ahead steadfast and confident in our value proposition!

Outside of work, Pat is married to his wife, Elena. They have two daughters, Trinity and Faye, along with 2 sons, Patrick, Jr. and their most recent addition, Christian. He enjoys playing with his kids, remaining in Elena’s good graces, and convincing daycare that “Trinity and Faye never act that way at home!”

Should you have any questions regarding our service or stable of experts, do not hesitate to email Pat.


Drexel University - Bachelor of Business Administration, 2009

The Haverford School

Activities & Affiliations

Supporter of Cristo Rey Network

The Cristo Rey Network of high schools delivers a career focused, college preparatory education in the Catholic tradition for students with limited economic resources, uniquely integrating rigorous academic curricula with four years of professional work experience and support to and through college.

Supporter of The Malta House

Malta House promotes the dignity of God-given life by providing a nurturing home environment, support services and independent living skills to pregnant and parenting mothers of all faiths and their children. Mothers at Malta House receive on-site counseling, financial education, parental development followed by transitional and post-residential support.

Philadelphia Association of Defense Counsel, Sponsor

PADC is a dynamic group of Philadelphia-area defense attorneys, with a terrific group of sponsors who work in the legal profession.

Patrick's LinkedIn Profile


Rose O’Rourke

Rose started her career working as a nurse. She worked in a variety of hospital and community settings providing direct care and supervision to staff. After completing her masters degree in nursing, Rose taught nursing and supervised clinical experiences for nursing students. Along the way she raised 5 children (4 boys and 1 girl). Her primary interest remains her husband (Casey), her family and her beautiful grandchildren. She joins the Versed Team equipped to provide the “service” that is the genesis for Versed.


University of Pennsylvania - R.N.

Holy Family - B.S.N.

West Chester University - M.S.N.

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Our trained and experienced staff is confident we will meet or exceed your expectations.

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