5 /5 Debbie Loudon: So far, I have had an initial office visit, gum graft surgery, and post-op follow-up. All of these experiences have been professional, thorough, and as warm and friendly as they could possibly be. Dr. Johnson and his exceptional staff are simply the best. I highly recommend looking into using this office for your periodontal care. I feel very fortunate to have this quality of care in Walla Walla.