Klamath Open Door Family Practice has been recognized as a Tier 4 Patient-Centered Primary Care Home. Phone: 541-851-8110. Fax: 541-851-8114. Email Inquiries. Mailing address: 2074 S 6th St Klamath Falls, OR 97601. All Locations. Klamath Health Partnership, Inc. is an FTCA deemed organization.Open Positions‧Home‧Pharmacy Services‧Our Providers‧Resources‧Dental Services.