Our Management Team is just the beginning of our caring, compassionate staff. We encourage you to meet them all.


Ron Walvoort, Chief Executive Officer, Administrator

920-467-2401, ext. 250           rwalvoort@pinehaven.org

Ron joined Pine Haven in January of 1999. He had served as an accountant at Alumaroll Specialty Company, Superior Services, and Pemco Inc. all of Sheboygan; as well as Escondido Ready Mix Concrete of Escondido, CA before bringing his talents to Pine Haven. Ron’s innovative mix of diverse accounting experience and reserved, serving personal nature make him a real asset to the Pine Haven team. Ron earned a Bachelor of Arts in Accounting from Dordt College in Sioux Center, IA.

“The fulfillment I receive from answering God’s call to serve seniors is a great joy to me.  It is extremely rewarding when the gifts I received from God fit hand in hand with meeting the needs of the community.   The residents living at Pine Haven are such a pleasure to be around.  They have a perspective on life that focuses on their hope in the Lord, not on the material things of this world.”


Marty Halverson, Chief Financial Officer

920-467-2401, ext. 257       mhalverson@pinehaven.org

Marty Halverson joined Pine Haven Christian Communities in May 2014.  Marty brings a broad knowledge base to the role of Chief Financial Officer.  He worked in public accounting for six years prior to moving into organization-based accounting roles.  Marty has nine years of experience working in the health care industry; the past 5 ½ years with Aurora Healthcare.  Marty also served as a member of Pine Haven’s Finance Committee for the past four years.  Marty has a bachelor’s degree in accounting from UW-Whitewater.

Steven Hendrikse, Chief Operating Officer

920-550-5224         shendrikse@pinehaven.org

After displaying compassion, caring, as well as respect and understanding for residents, their family, staff, and volunteers while serving as the manager of our Giddings Avenue campus, Steve was promoted to the position of Chief Operating Officer. Steve ensures that all departments are working well together to best serve our residents.

Before coming to Pine Haven, he was the director of services for TLC Homes, Inc. in Sheboygan, where he was responsible for the delivery of services to 125 residents and supervised all management staff. Previously, he worked for Sheboygan County as a long-term care supervisor, social worker, and adult protective services specialist. Steve has a bachelor's degree in community recreation and business from Southern Illinois University and is a certified social worker with the State of Wisconsin.

"Working at Pine Haven is both fulfilling and rewarding.  Seeing our Vision statement lived out each day is both humbling and exciting.  I thank God for the opportunities he has given in me in my professional career that have equipped me and prepared me to serve the wonderful folks who call Pine Haven home."


Karin Oliver-Kreft, Director of Marketing & Community Outreach

920-550-5227       koliver-kreft@pinehaven.org

Karin Oliver-Kreft joined the staff in April 2014.  Karin has an extensive background working with full-service marketing and advertising agencies providing marketing campaign planning, strategic brand development, website development, social media marketing and project management.  Karin has worked on marketing campaigns, including commercial and material development for clients that include Cousins Subs, Milwaukee Area Technical College, United Performing Arts Fund, Six Flags, Helzberg Diamonds and PetSmart.  Karin has a bachelor’s degree in communications, theatre arts and vocal music from Eastern Michigan University.

Marcia Adams,
Admissions Coordinator

920-467-2401, ext. 502          madams@pinehaven.org

As Admissions Coordinator,Marcia responds to inquiries and referrals. She meet with residents prior to admission to gather information and include assist residents and families with the social and emotional aspects of facility transitioning. She communicates with our interdisciplinary team to help ensure residents needs can be met from the household to which they will be moving.  Marcia earned her Bachelor’s Degree in Social Work from UW-Milwaukee. Prior to joining Pine Haven, Adams was employed by Hospice Advantage (now called Compassus) as a social worker and volunteer coordinator. She has also served as the senior center supervisor at the Sheboygan Senior Center, director of social services with Sunny Ridge Health and Rehabilitation Center, and social worker/discharge planner at St. Nicholas Hospital.

“I enjoy working at Pine Haven Christian Homes because of the supportive environment.  Pine Haven is very committed to providing the highest quality care and compassion to residents and their families. The compassion, dedication, and respect that is expected by staff is also exhibited toward staff.   Administrative staff truly care about the needs of the staff, and providing a positive working environment for all of its employees. This is shown though their generous, caring and positive attitude. It is truly my privilege to work for Pine Haven, and I enjoy coming to work every day.”

Mary Aderman, Dining Services Assistant Manager

920-467-2401, ext. 205         maderman@pinehaven.org

Mary joined our staff in March of 1976 and some thirty-five years later she still calls Pine Haven her sole place of employment. That fact is incredible alone, but even more so when you realize she began here literally right out of high school.  She has grown our dietary department and maintained consistent fulfilling all the dietary needs and concerns of our residents at all different levels of their care needs. Mary successfully completed the dietary managers course at North East Wisconsin Technical College and has earned a certification as a dietary manager.

“I enjoy working at Pine Haven because it is very rewarding to be able to make a positive impact on the residents. It could be something very small as a smile or serving them their favorite ice cream. I also enjoy being able to take the time to talk and interact with the residents.”

Rhonda Anderson,
Assisted Living Manager - Giddings Avenue Campus

920-550-5280         randerson@pinehaven.org

Rhonda Anderson joined the Pine Haven team as our assisted living manager at the Giddings Avenue campus in January 2017. Rhonda is responsible for overseeing the care of residents, regulatory compliance, and leading the team of clinical employees on the Giddings Avenue campus.

Rhonda feels called to serve others and believes the Mission, Vision and Values represent the heart of that calling. She is excited to join Pine Haven because of our Christ-centered mission and strong reputation in the community.


Michelle LeMahieu, 
Assisted Living Social Worker - Haven Drive Campus

920-467-2401, ext. 202         mlemahieu@pinehaven.org

Michelle strives to ensure that the needs of our residents are met at our Haven Drive campus, by assisting with psycho-social needs of our residents, and connecting them with various programs or benefits available to them.  Michelle earned her Bachelor of Arts degree in social work from Calvin College in Grand Rapids, Michigan.  Michelle’s experience in social work includes working as a mentor with Sheboygan County Health and Human Services and a case manager and program coordinator with Salvation Army.  She also has experience working as a client advocate in a shelter for battered women and children, a resident aide in a hospice facility.

“I love working at Pine Haven because it gives me an opportunity to use my God-given gifts in social work, and also allows me to freely discuss faith with residents and co-workers.”

Amy Liermann, Clinical Care Coordinator

920-467-2401 ext. 206          amyl@pinehaven.org

Amy joined us as a nurse in Residential Center and recently took on responsibility as our clinical care coordinator.  In that role, Amy oversees the daily nursing care of our residents in Residential Center and conducts nursing assessments of potential residents in Residential Center and Covenant Home.  Amy also earned her LPN diploma and then associate degree in nursing from Lakeshore Technical College.  Amy worked at Pine Haven originally as a CNA.  Between then and coming back to Pine Haven, Amy worked as a CNA at Sheboygan Senior Community and Aurora VNA and then as a nurse at Sunny Ridge.

Kelli Loose, Education and Infection Control Coordinator / Interim Director of Nursing

920-467-2401 ext. 240         kloose@pinehaven.org

Kelli develops the education program for our employees, ensuring our staff remains up to date on their required training, as well as managing infection control for all three campuses. Before coming to Pine Haven, she has had over 10 years of nursing experience as a director of nursing in skilled nursing, and as a CNA and a nurse in hospital, skilled nursing, and assisted living settings. Kelly has a passion for sharing knowledge with other - which is vital to her position at Pine Haven. In addition to her regular duties, Kelli is serving as our interim Director of Nursing, caring for our residents and managing staff in our skilled nursing households.

Sue Niesen

Sue Niesen, Volunteer Coordinator

920-550-5289          sniesen@pinehaven.org

Sue is not only our Volunteer Coordinator, she also serves our residents as a CNA. She  joined the Pine Haven team in May 2015 through our RA-to-CNA Program, earned her certification and also became a CNA mentor. Prior to Pine Haven, Sue worked in a variety of administrative and customer service positions, including as an income development specialist for the American Cancer Society. As part of this role, Sue was responsible for leading teams of volunteers, including the planning committees of six different Relay for Life events. This experience will be valuable as Sue continues to build on the strengths of our volunteer program. 


Dawn Nimtz, Director of Nursing

920-550-5249       dnimtz@pinehaven.org

Dawn comes to Pine Haven with extensive knowledge and experience. She earned a Bachelor of Science degree in nursing from UW-Milwaukee and has worked in the nursing field the past 29 years. Dawn has held a variety of positions in her career, starting as a CNA, working as a staff nurse, infection control nurse, in-service/education coordinator, and for the past six years, she has served as director of nursing at Lasata Care Center. She believes that bringing faith into resident care brings that care to a higher level and provides balance in caring for the whole person.

Kelly Rabe, Social Services Skilled Nursing Facility

920-467-2401, ext. 207          krabe@pinehaven.org

Kelly earned her Bachelor’s Degree in Social Work from UW-Oshkosh.  Most recently, Kelly has worked as a case manager with Community Care in Sheboygan.  She may be a familiar face to some of you as she has been in our facility to work with clients in this role.  Kelly has 13 years of experience as a social worker in nursing homes.  She served in this capacity with Fond du Lac Lutheran Home for nearly eight years and St. Camillus Health Care Center in Wauwatosa for approximately four years.

Tammy Reinholz

Tammy Reinholz, Assisted Living Manager - Haven Drive Campus

920-550-5245     treinholz@pinehaven.org

Tammy manages our Prairie Crossing household to ensure that the needs of our residents are met. She has several years experience managing group home and assisted living environments. Tammy previously worked as a service and support director with TLC Homes in Sheboygan, which provided her with valuable experience supporting residents and families, and leading employees. She also has experience as a CNA - having worked at Pine Haven in that capacity years ago.

Tammy has a strong sense of purpose and has expressed gratitude to be working at a place where she can live her faith every day.

Stacey Richter, Dining Services Manager

920-467-2401, ext. 278         srichter@pinehaven.org

Stacey Richter is a Registered Dietitian Nutritionist and has over two years working with the Sheboygan Area School District prior to joining Pine Haven. While going to school, all of Stacey's work experience related to food service. Stacey has worked in a variety of roles from barista to cook for local organizations including Sheboygan Senior Community, Watson's Vending/Elite Catering, and Exchange Bank Coffeehouse. While in college, she also did nutrition research & development for Watson's Vending/Elite Catering. Stacey has an associate degree in culinary arts from Moraine Park Technical College and a bachelor of science degree in dietetics from Mount Mary University.

Kelley Tulius, Clinical Quality Coordinator

Kelley’s responsibilities will include assessments of potential residents, communication with medical providers and families, change of condition assessments, maintaining service plans, and supervision of clinical staff at the Prairie Crossing and Oostburg facilities.  She earned her Associate Degree in Nursing at Lakeshore Technical College.  Most recently, she served as the infection control/nurse education coordinator with Sheboygan Senior Community.  Prior to that, Kelley worked as a RN supervisor, director of nursing, assistant director of nursing, and LPN at three different nursing facilities, including Sheboygan Progressive and Morningside Health Care Center.

 “Pine Haven has a compassionate dedication to helping residents and their families by providing Christ-centered care and meeting their needs through treating and respecting every person as an individual.  The supportive and caring staff make the atmosphere of Pine Haven enjoyable to come to work and do the job that I love to do.  Being a part of the team here is a blessing as everyone works together to provide the best care possible.”

Rev David Van Dixhorn, Chaplain

920-467-2401, ext. 252          dvandixhorn@pinehaven.org

Rev. David Van Dixhorn brings over 37 years of pastoral experience most recently being the pastor at First Evangelical Presbyterian Church in Cedar Grove. Other local churches he has served during his career include: Immanuel Bible Church, Evangelical Free and Southside Alliance. He is a graduate of Trinity College and Cornerstone University. Rev. Van Dixhorn has four children, five grandchildren and resides in Sheboygan with his wife Jean. His complete understanding of Pine Haven’s mission to provide quality, Christian care makes him a very exciting and welcomed addition to Pine Haven’s staff and family of residents.

“It gives me the privilege of sharing God’s grace to the residents and staff.  Since I know the Lord has assured me of my future home with Him in heaven, my main desire is to encourage as many people as I can at Pine Haven to accept God’s free gift of eternal life by praying the salvational prayer.” (Ephesians 2:8 & 9)

Denise Walter, Life Enrichment Coordinator

920-467-2401, ext. 226          dwalter@pinehaven.org

Denise has been an employee with Pine Haven Christian Communities since August of 2012. Prior to accepting a position with Pine Haven, she spent 13 years as a retail manager with two specialty retailers.   Her passion truly lies in interacting with and helping people.  She is an active member of St. Johns U.C.C. church in Sheboygan.  Denise teaches Sunday school and is also a member of the Missions Committee.

“Why I enjoy working at Pine Haven…..it’s rewarding.  I never knew a job could be so rewarding.  There is so much joy that comes from working with each of the residents.  Seeing that joy on the faces of the employees, residents, family members, and volunteers is priceless.”


Martina Wessels, Life Enrichment Manager

920-467-2401, ext. 204         mwessels@pinehaven.org

Martina Wessels joined Pine Haven in September 2014. Martina Wessels earned her bachelor’s degree in exercise science from Trinity Christian College in Palos Heights, Illinois.  Since graduating, Martina worked for Alliance Rehab at a retirement community similar to Pine Haven providing fitness services to residents in independent living, assisted living, skilled nursing, rehabilitation and dementia care environments.  Martina has created exercise programs, coordinated activities within a resident fitness center, planned and coordinated games and fitness activities, created displays on health topics and presented seminars on fitness and wellness topics.