Executive Team

About The GreenFields’ Executive Team

The executive team at The GreenFields Continuing Care Community oversees the campus’ day-to-day operations and ensures the smooth and continuous flow of residential maintenance and care services. Learn more about our executives below. 

Christopher Koenig, PT, DBT, MBA, LNHA

President & Chief Executive Officer
Niagara Lutheran Health System

Chris Koenig joined the Niagara Lutheran Health System as president and CEO on April 19, 2016.

Chris previously served as vice president of post-acute care for Erie County Medical Center Corporation (ECMC). Prior to ECMC, Chris served The McGuire Group from 2007 through 2015, culminating in his role as administrator of rehabilitation, where he provided  oversight of all rehabilitation operations of six facilities in New York State and one facility in Detroit, MI. He also became a managing consultant and partner of Rehab Ultra Consulting, a consulting firm developed through The McGuire Group.

Additionally, Chris serves as an adjunct professor for State University of New York at Buffalo’s School of Public Health and Health Related Professions. Chris holds an Master of Business Administration (concentrations of finance and health care administration), University at Buffalo, The State University of New York; and a doctorate degree in physical therapy from University at Buffalo. Professional licensures include Nursing Home Administration (New York) and Physical Therapy (New York).

Darlene Jones Crispell

Administrator of Greenfield Health & Rehabilitation Center

Darlene Jones Crispell is responsible for oversight of all functions of GreenField Health & Rehabilitation Center which provides skilled nursing care, rehabilitation services and outpatient therapy.

She has more than 33 years of experience as a licensed nursing home administrator. During this time she served as administrator of record for 18 years at the Episcopal Residential Health Care Facility, a member of the Episcopal Church Home & Affiliates, and as administrator of record for 10 years at three long-term care facilities for Catholic Health – Nazareth Nursing Home, St. Francis of Buffalo and St. Francis of Williamsville.

A graduate of Buffalo State College, Crispell received a bachelor’s in social work. She has served as a board member on the St. Francis of Buffalo Foundation, co-chair for six years on the Western New York Mutual Aid Program, past president and current board member of the LeadingAge Western New York. She was also honored by Western New York Homes & Services with the Aging the Meritorious Service Award in 2002.

Other community involvement includes volunteering for Crisis Services as a rape victim advocate and past assistant den leader for the Boy Scouts of America Pack 456.

Shoshone Dentice, MSHA, CCRA

Executive Director of Community Relations

Shoshone Dentice serves as executive director of community relations for the Niagara Lutheran Health System, where she oversees clinical business development, community partnerships, quality-of-life program development and community events.

Shoshone holds a Bachelor of Science in health services management, a Master of Science in health services administration, and a clinical research associate certificate from D’Youville College in Buffalo. She is a fellow in the Health Foundation of Western and Central New York’s Health Leadership Fellowship Program and holds a publication in the Women’s Journal of Health.

Shoshone currently serves on the Trocaire College Russell J. Salvatore School of Hospitality Board of Advisors, the Western New York Long Term Care Council and the Network in Aging Education Committee.

In 2018, Shoshone was selected to receive the Distinguished Young Alum Award from D’Youville College.

Laurie J. Jankowski, Chief Financial Officer

Chief Financial Officer
Niagara Lutheran Health System 

Laurie Jankowski is responsible for strategic execution and overall short- and long-term financial management of the Niagara Lutheran Health System and subsidiaries. Laurie holds a bachelor’s degree in accounting from SUNY Geneseo.

Prior to joining Niagara Lutheran in 1996, Laurie was a senior manager in Ernst & Young’s Health Care Consulting practice and a controller for a multi-facility long-term care organization. In addition, she has served on the LeadingAge New York & Western New York Board of Directors, the New York State Department of Health Nursing Home Reimbursement Committee and New York State Long Term Care Joint Association Task Force on Medicaid Reimbursement Reform.

In addition, Laurie serves as the secretary of Western New York Long Term Care IPA and has been a board member since 2008.

Judy Kelly

Administrator of GreenField Terrace

Judy Kelly is responsible for the overall management of GreenField Terrace, which serves residents with memory care and enhanced assisted living needs. This includes developing programs to allow our residents to age in place.

GreenField Terrace received approval from the New York State Department of Health to allow a limited number of residents to have both an enhanced and memory care need.

Judy has dedicated her nursing career to long-term care and has worked with serving the elderly for the past 40 years. In 1988, Judy joined the nursing management team for Niagara Lutheran Health System. In 2014, Judy was appointed the Administrator of GreenField Terrace.

Judy received her AAS degree in nursing from Erie Community College.

Nicholas Kwasniak
Executive Director of Environmental Services

Nicholas Kwasniak is responsible for buildings and grounds and any remodeling or new construction projects for the Niagara Lutheran Health System.

With more than 15 years of mechanical and engineering experience, Kwasniak has a strong record of accomplishments. His expertise is focused  in delivering operational performance while meeting new energy incentives and strategic goals.

Prior to joining Niagara Lutheran Health System in 2014, Kwasniak worked for Siemens Industry in Buffalo.

Nick attended HVAC/R trade school and holds a New York State Stationary Engineers License.


Mary Lynn Martin

 Director of Human Resources

Mary Lynn Martin is the Director of Human Resources for the Niagara Lutheran Health System.

Ms. Martin has more than 20 years of experience in human resources and is responsible for the development of programs such as recruitment, evaluation and placement, as well as the policies and procedures that govern the staff.

She holds memberships in the Society for Human Resource Management and the Buffalo Niagara Human Resource Association, as  well as the Healthcare Human Resource Managers Association of Western New York. She received her education through the University of Buffalo and studied for her PHR at Cornell University.

David McMullen

Executive Director of Development and Marketing

David McMullen serves as executive director of development and marketing for the Niagara Lutheran Health System and Foundation. In this role, he manages the organization’s fundraising, marketing and advertising, pastoral care and volunteer guild functions.

Prior to joining Niagara Lutheran, he traveled in 50 countries managing global marketing programs for manufacturers in the aerospace, motion control and metal fabrication industries. During his tenure at Unipunch Products, the company was named Exporter of the Year by the U.S. Small Business Administration.

David earned a B.A. degree in international business and department scholar recognition from SUNY Potsdam. He serves on the board of directors for the Lancaster Chamber of Commerce and has served on boards of numerous community organizations.

In addition to his business experience, he also performs on trumpet in several community music ensembles.

Chantal White

Executive Director of GreenField Court & Greenfield Manor

Chantal White is the executive director of the GreenField Court, an assisted living facility and the GreenField Manor, an independent living facility. In this role, Chantal oversees the operations of both facilities, including resident care.

Chantal has more than 15 years of experience as a nursing home, assisted living and independent living administrator. Prior to these leadership roles, Chantal was a hospital and nursing home social worker.

Prior to joining the GreenFields team, Chantal worked at Alice Hyde Medical Center for 13 years.

Chantal holds a master’s degree in social work and a nursing home administrator’s license.


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