History, Vision, & Methodology


Credentials Administrative Services has been in business for more than a decade and has 45 years of collective experience in the health care administration field.  Specializing in the detailed processes of credentialing and payer enrollment services, we pride ourselves on our confidentiality, accountability and satisfaction.

Credentials Administrative Services began from the vision and knowledge of the time-consuming processes for the healthcare community to research and verify certifications, obtain primary source documentation, coordinate, follow-up and finalize extensive amounts of paperwork. Sometimes these processes are difficult to accomplish to meet the revenue goals and high standards of the organization.

All too often it is the administrative/support staff that are required to "step-in" to accomplish credentialing and provider enrollment needs of their organizations to meet necessary deadlines or capture revenue that would otherwise be lost, while still managing a wide variety of other responsibilities.

Credentials Administrative Services is here to assist you or your staff to lighten the load so that you can be confident that you will continue to maintain excellence for your organization and accomplish your revenue initiatives!


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Contact us for a free phone consultation to discuss your unique payer enrollment and credentialing needs.

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Executive Management



Sheila Macklin

Sheila founded CAS in 2003. Her passion for credentialing and payer enrollment is fueled by her desire to ensure patient access to health care, particularly in rural and under-served communities. Sheila is responsible for crafting and implementing the long-term visions of the company. 



OWNER / CHIEF FINANCIAL OFFICER / Director of marketing

Michael Macklin

Michael has been Chief Financial Officer at CAS since 2011. In addition to his duties as CFO, Michael's extensive sales and marketing background has ensured that CAS continues to grow and adapt in the ever-changing business of healthcare in the United States.




Adam Swain

Adam joined CAS in 2011 as a Credentialing Specialist. His strengths in organizing information, streamlining operations, management of staff, and dedication to the business resulted in him quickly working his way into higher positions within the company. He was promoted to Chief Operating Officer in 2016 and oversees daily operations of both Credentialing and Payer Enrollment.