What Our Clients Say


The O’Sullivan Group has been of great assistance in evaluating our reimbursement rates against benchmarks and guide our efforts to establish and maintain favorable market rates. They led our hospital professional services contracting and helped launch our office based Interventional Radiology roll-out to the key managed care payers. The O’Sullivan Group is a valuable resource whose flexibility complements and supplements our internal resources.

Mark Williamson, Chief Financial Officer, SimonMed Interventional

SimonMed Interventional

The O’Sullivan Group was able to effectively introduce Arise Prosthetics and to find a way for us to become participating providers even when we received initial decline letters that panels were closed for our specialty. Being contracted with all the various plans has allowed me to grow my business by focusing on patients and referring physicians.

Mark Werner,
President, Arise Prosthetics

Arise Prosthetics

The O’Sullivan Group has proven to be extremely effective in negotiating with payors. They helped us determine where to concentrate our efforts and have been critical to the success of our organization.

Michael Huether, M.D.,
Arizona Skin Cancer Surgery Center

Arizona Skin Cancer Surgery Center

The O’Sullivan Group is a key component of our managed care payer contracting. They keep us up to date with changes and manage the annual renewal plan. Their advice and perspective are impactful in our decision making and strategy.

Russell Godard,
The Peaks Administrator

The Peaks

We were referred to The O’Sullivan Group by another provider that was a previous O’Sullivan Group client. The O’Sullivan Group has been able secure several critical payer contracts in our core market and in expansion States. It allowed me to focus on managing operations, marketing, billing and other opportunities.

Colleen Wheeler,
Co-Founder and EVP Strategy and Compliance

Wheeler Medical