Senior Administrative Leadership

Marie Dansereau

Marie DansereauDirector of Patient Financial Services
Marie Dansereau is the Director of Patient Financial Services at Walden Behavioral Care.  She oversees all aspects of the hospital revenue cycle, from patient registration through billing and account collections, ensuring financial viability for the hospital.  Ms. Dansereau has more than 30 years of experience directing and managing the financial functions for several health care organizations including behavioral health physician group organizations. She received her business management degree from Lasell College in Newton, MA.



Dorothy Conzo

Dorothy ConzoDirector of Health Information Management
Dorothy Conzo has been the Director of Health Information Management at Walden Behavioral Care since 2004. In this role, she focuses on developing and administering health care data collection and reporting systems that are designed to allow complete patient privacy, confidentiality and security. In addition, she is also Walden’s Credentialing Coordinator.  Her organizational skills and attention to detail have helped Walden achieve and maintain Joint Commission accreditation and Department of Mental Health licensure. Ms. Conzo received her certificate in Microsoft Office, Billing and Coding from Sullivan & Cogliano and is certified as a professional credentialing specialist through the National Association Medical Staff Services.

Dennis Theriault

Director of Quality Improvement

Dennis Theriault is the Director of Quality Improvement at Walden Behavioral Care.  In this role, he is responsible for developing and administering the Walden Behavioral Care quality improvement program in accordance with Joint Commission, DMH, CMS and various contractual requirements. Mr. Theriault organizes quality improvement efforts across the continuum of care and builds on the foundation previously established to promote the effective use of outcome measurements to guide the development of Walden’s system of care.  In addition, he acts as a liaison with external parties on matters relating to patient rights, patient safety, and vendor performance. Mr. Theriault also plays an integral role in the design and implementation of Walden’s electronic medical record system throughout all locations and levels of care at Walden. He has spent 15 years in the behavioral healthcare field. Prior to joining Walden, Mr. Theriault worked for Spectrum Health Systems, Inc. in a number of positions of increasing responsibility, most recently as Director of Quality Improvement and Compliance in their Worcester location.  He was also self-employed as a small business consultant and CARF Accreditation Surveyor for a number of years.  Mr. Theriault received his MBA from Daniel Webster College and his B.A. in Psychology from UMass Lowell.