Premier Billing Network and O’Sullivan Consulting Group Are Now Part of UnisLink

We’re Building on the PBN and OCG Heritage

Premier Billing Network (PBN) and O’Sullivan Consulting Group (OSCG) have been providing medical billing, claim processing, coding, receivables management, credentialing, and practice management services to physicians and healthcare facilities for over 20 years. Over the past few years, dramatic shifts in the healthcare sector have impacted providers, patients, and payors, raising complexity, costs and workload across the board.

The demands placed by these changes inspired PBN and OSCG Founder and CEO, Pat O’Sullivan to look for merger opportunities that would enable the companies to affordably serve their clients with an enhanced range of capabilities. In the summer of 2020, after a multi-year search, Pat found the perfect partner in UnisLink.


UnisLink leverages its proprietary software solutions to provide end-to-end revenue cycle management to independent physician groups, ACOs, and value-based care groups across the United States. Headquartered in Phoenix, AZ, with additional offices in IL, IN, MT, ND, NY, OH, OK, PA, SD and India, the company deploys unique technology, analytics, and skilled teams to enhance clinical outcomes while improving the financial performance of its customers across 42 states. For more information, visit