About
Barbara Kalmanson, PhD, Clinical Pediatric Psychologist, has joined the team, but the primary speech language pathologist is Liesl Hartmann, MA CCC/SLP, BCS-CL, DIR/Floortime Specialist. Liesl has over 20 years of experience providing speech and language services to children and specializes in working with children with language disorders and social learning challenges. She offers individualized therapy in office, home, and school settings, as well as group therapy and in-class support. Liesl also provides parent coaching and support, using her DIR/Floortime training to help families learn and grow alongside their child. Positive Development has a team committed to bringing high-quality services to families in the DMV area.
Insurance & payment
Insurance details are not listed publicly — call the practice to confirm.
Ask about sliding-scale fees if you're paying out of pocket.
Services & specialties
Individualized Therapy
Liesl offers individualized therapy for children in office, home, and school settings.
Group Therapy and In-Class Support
Liesl has worked extensively with preschools and elementary schools, supporting children's language and social development.
Parent Coaching and Support
As a DIR/Floortime provider and mom herself, Liesl knows how to support parents on their journey of learning and growing alongside their child.