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Contact Information
Memory Haven of Sumner
5107 Parker Rd E.
Sumner, WA 98390
Copyright 2016  Three Servant Care, LLC
We Treat our Residents as if they were Family
Memory Haven Sumner was created from the heart. One of our very first residents was Marcia,
the wife of Memory Haven founder and administrator John B. Merz.
Marcia was diagnosed with Alzheimer’s Disease at the very young age of 55. He was her personal
caregiver for seven years in their family home. Marcia’s eventual need for dementia care outside
of the home motivated John to create Memory Haven’s unique cottages.
Marcia had the opportunity to live at Memory Haven for a year until God called her home. John
knows she was both cared for and cared about at Memory Haven. While she is no longer alive,
these two outcomes remain top priorities for John and his team as they care for family members
of other community residents.

Our Mission & Vision
Our mission is to embrace the lives of our residents with the utmost support and
compassion, providing the kind of care we would provide our own family. We
accomplish this mission by providing CARE:
· Compassion with the highest quality of care for our residents at all stages of
dementia, in a gentle, loving, home-style environment
· Advocacy and protection for resident rights, their dignity and self-worth
· Respect for residents, families and staff members by communicating both fully and openly
· Education every day; informing and training staff members, families and communities affected by Alzheimer’s disease and
other dementia-related disorders.
Our vision is to dignify people with dementia in a home-like atmosphere and bring them the best quality of life.
Our Management Team
Our leadership team brings three-quarters of a century of experience in taking care of those who are aging and experiencing dementia.
John B. Merz, Administrator & Founder
John has dedicated his entire 35-year
career to the service of caring for our
older neighbors. After earning his
undergraduate degree in health care
management, John was licensed as a
nursing home administrator in 1981
and would spend the early years of
his career operating skilled nursing
homes. He has since earned his
master’s in business administration
and is currently pursuing a master’s
degree in biblical studies.
Teresa Mamlock, LPN
Teresa brings more than 20 years of
experience to her role as Memory
Haven’s on-site nurse leader. She
started her career as a certified
nursing assistant and went on to
attain an advanced nursing degree.
“I knew out of nursing school that I
would serve seniors. I’ve been
working with seniors ever since.”
Mary “MJ” Jaynes, Community Manager
Starting as a certified nursing assistant and then
advancing to other areas of increasing
responsibility, MJ has worked in the adult family
home and assisted living field for more than 17
“I truly believe that I was meant to be in this type of
work. The love and humor that I receive every day
from my residents make this work so rewarding.”
Before becoming the administrator of Memory Haven, he owned and
successfully operated multiple licensed assisted living facilities in
the Puget Sound region, including three dementia care centers. He’s a
U.S. Army veteran and member of the Puyallup and Sumner Chambers
of Commerce, the Puyallup Rotary Club, the Downtown Sumner
Association and Our Savior Lutheran Church.
About Us