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About Us


Bill Hellebusch


Bill received his doctorate degree from the University of Missouri-Columbia in 2010.  Since then, he has served Mercy-Washington in various bedside and leadership roles.  In his current position, Executive Director of Operations, Bill oversees all support services (food services, custodial and maintenance, supply chain, etc.).  He also manages several clinical departments (with both inpatient and outpatient functions) and clinic-based physician offices.  Bill has a history of effectively collaborating with all operative levels within the Mercy organization - from front line staff to physicians and executives.   One key to Bill's success is effective communication.  He genuinely cares about people and routinely makes time to listen to the concerns and ideas brought to him by coworkers, providers and patients.  On June 1, 2023, Bill assumed the additional position of Administrator, Hermann Area District Hospital.  While he continues to serve Mercy-Washington, Bill can be found onsite at Mercy-Herman at least three days per week.   Bill has many goals and aspirations for Mercy-Herman and will likely spend more time on campus as he works towards making his vision a reality. Bill grew up just 15 minutes north of Hermann in the rural Jonesburg area.  He has frequented the town since childhood and is very familiar with the Hermann community.  Bill and his wife, Ali, currently live in Washington with their four children.  When not at work, Bill can be found with his family on his homestead, Rhine Valley Farm, at a Go Hog Wild 4-H meeting, or on a baseball diamond coaching little league.

Sue Daller, Assistant Administrator of Nursing & Director of Nursing

Sue Daller – Chief Nursing Officer

Please join me in welcoming Sue Daller as HADH’s Chief Nursing Officer.  Sue brings a wealth of knowledge and experience to our hospital.  All combined Sue has nearly 30 years of service to HADH spending the last 21 years as the Director of Nursing overseeing all things nursing.  No changes will be made to that structure overall but Sue will be taking on some new responsibilities.  Most notable is that Sue will assume executive leadership responsibility for our Respiratory Therapy, Cardiopulmonary, and Cardiac Rehab departments.  Sue will continue to work closely with nursing leaders Rhonda Ray, RN and Jennifer Frederick, RN while adding leaders Diana Ware, RT and Kali Van Booven, RN to her team.  Under Sue’s leadership we can continue to expect and look forward to a high-performing clinical culture.  When not at work Sue likes to spend time with family and friends, spoiling her 3 grandsons, and volunteering at her church and St. George School.

Matt Siebert

Matt Siebert – Executive Director-Talent & Business Initiatives

Healthcare is challenging, complex, and ever-changing.  Along with that, it begs that we challenge the ‘status quo,’ step outside of our comfort zone, and reinvent how we do business.  It in this vain that I have asked Matt Siebert to take on a new challenge as our Executive Director – Talent & Business Initiatives.  This position was especially developed with Matt’s unique strengths and talents in mind.  As the Assistant Administrator, Matt has spent the last several years leading the operations for Imaging, Lab, Therapy, RT, IT and our Support Services.  Matt also has extensive experience with developing crucial evaluations and submitting business assessments for healthcare systems.  Some past successes include several meaningful use attestations resulting in over $1.2M in increased revenue for HADH, serving as our admin user for NextGen, and successfully garnered a partnership with the community to submit a Community Health Needs Assessment in 2016.  It is these talents that I have asked Matt to assume the role as our lead strategic partner for Human Resources where he will help us find, attract, and retain new talent.  Matt has also agree to serve in a new capacity working to procure grants for HADH through grant writing.  Matt will retain his oversight of our IT department and will continue with meaningful use reporting and price transparency.  To allow Matt time to focus on his new responsibilities, leadership of his current departments will be divided among Sue Daller, as mentioned above, and myself. Matt received a Bachelor of Science degree in Radiologic Technology and a Master's degree in Health Administration from the University of Missouri-Columbia. He and his wife, Gemma, live in Hermann, MO where he has served on the local board of the Crusade for Cancer and is also currently a member of Saint George Catholic Church.  Please join me in welcoming Matt to his new role.

Shirley Viola

Ashten Heying – Executive Assistant

It is my pleasure to welcome Ashten Heying as HADH’s newest member of the administrative team as our new Executive Assistant.  Ashten graduated with her Masters of Social Work (MSW) in 2016 from the University of Missouri – Columbia.  She has served as HADH’s Director of Social Services since 2017 and has been an integral part of our clinical operations lending exceptional service to our patients and their families.  In her new role, Ashten will be immediate assistant to our Executive Leadership team and will help keep our operations and new endeavors running smoothly.  Her role will be critical and I have no doubt she is up for the challenge.  Ashten has graciously agreed to continue in her social work role 2 days per week (Wednesday and Friday) and attend all utilization review committee meetings while we search for her replacement – thank you, Ashten! Ashten, a 31 year resident of Hermann, MO likes to travel and spend time with her husband, Wes, and their 3-year-old daughter, Elsie.  Please join me in welcoming Ashten as our new Executive Assistant. 

Shirley Viola

Cindi Engemann – Chief Financial Officer

It is my pleasure to announce Cindi Engemann as HADH’s newest Executive Leader.  Effective 9/17/23 Cindi will assume the role of Chief Financial Officer for our hospital.  Cindi has been working in the accounting role for our hospital since 2019.  Prior to that Cindi and her husband owned and operated multiple grain elevators – the operations of which was of the highest ranks of privately owned elevators in the state of Missouri.  Cindi successfully navigated annual commodity audits totaling millions of dollars in product and positioned their business and their customers for success year after year. Cindi has a BS in Business Administration and Management. Since starting here Cindi has assumed responsibility for several projects and in so doing has learned the details behind cost reporting, end of year audits, in addition to general ledger accounting of the hospital accounts.  As CFO, Cindi will continue to expand on her knowledge and will provide leader expertise for Hermann’s financial success.  In her new role Cindi will assume the leadership of all finances, cost reporting, board reporting, end of year audits, payroll, accounts payable, and will also become the accountable executive of the billing department.  Cindi and her husband have two sons, both of whom are pilots, and two grandchildren. In her spare time Cindi enjoys renovating her 150 year old farm house which is part of the Century Farm where she grew up. She also enjoys gardening and volunteering at the Shrine of Our Lady of Sorrows at Starkenburg. By far, however, her favorite pastime is cooking a meal and enjoying it with family and friends.  Please welcome Cindi to her new role.