Barbara Herdman, P.N.P., L.M.T. Barbara Herdman received her PNP and Master's Degree from the University of Iowa.  She has worked as a Pediatric Nurse Practitioner in clinics in Iowa and Michigan before coming to Oregon.  Barbara Herdman is a Licensed Massage Therapist who offers massage in a therapeutic and professional manner for overall health.  You may choose 15, 30, 45 or 60 minutes of therapy to target a specific or general area.