www.atriohp.com What do our members in Douglas County think about their ATRIO Health Plan? Hear from actual ATRIO Health Plans members in Douglas County and learn about why they chose ATRIO as their Oregon Medicare Advantage Plan provider. Read other ATRIO Member reviews here to get the full story! DISCLAIMER: ATRIO Health Plans has PPO and HMO D-SNP plans with a Medicare contract. Enrollment in ATRIO Health Plans depends on contract renewal.