Kathryn Severyns Dement Sleep Disorders Center, located at 401 W. Poplar Street in Walla Walla, WA is a member of Providence Health & Services and strives to create healthier communities, together. Providence Health & Services is the third largest not-for-profit health system in the United States. We are committed to providing for the needs of our communities, especially for those who are poor and vulnerable, across Alaska, California, Montana, Oregon and Washington. Our system includes more than 76,000 caregivers serving in a diverse range of specialties from birth to end of life, including acute care, physician clinics, long-term and assisted living, palliative and hospice care, home health, supportive housing and education.