Physician - Sports Medicine
Leah G. Concannon MD
Sports Concussion Program at Harborview
📍 Seattle
Rehabilitation/Brain InjuryMultidisciplinary ConcussionReturn to Play/Learn
Concussion specialist
David Lessman MD
📍 Renton, Washington · ✓ Listing verified 2026-07-11
About
David Lessman, MD practices Non-operative Sports Medicine in Renton, Washington, and subspecializes in Concussion and ImPACT testing. They see patients at Proliance Orthopedic Associates, part of Proliance Orthopedic Associates (POA).
The listed clinical focus includes Sports Concussion, Return to Play, Return to Learn, ImPACT Testing and Baseline Testing. In this directory the listing sits under Multidisciplinary Concussion and Return to Play/Learn.
The practice sees athletes and adults.
Proliance Orthopedic Associates offers ImPACT computerized neurocognitive testing for concussion, storing each athlete's preseason baseline for later comparison. If a concussion is suspected, follow-up testing helps confirm that brain function has returned to baseline before a graduated, stepwise return to activity. Concussion baseline testing and follow-up care are available with sports medicine physicians at the group's Renton and nearby clinics, serving athletes.
Services
Multidisciplinary ConcussionReturn to Play/Learn
Clinical focus areas
ConcussionSports ConcussionReturn to PlayReturn to LearnImPACT TestingBaseline Testing
Details
Provider typePhysician - Sports Medicine
SpecialtyNon-operative Sports Medicine
PracticeProliance Orthopedic Associates - Concussion Program
Health systemProliance Orthopedic Associates (POA)
ServesAthletes/Sports, Adult
Before your first appointment
Patients who contact David Lessman in Renton usually want to be clear on a few things first:
- how return-to-play clearance works — The standard stepwise protocol athletic trainers and team physicians follow.
- what each stage of concussion recovery looks like — A stage-by-stage timeline, and what should be happening at each one.
- how concussions are actually treated — The first 48 hours, active recovery, and the therapies used for lingering symptoms.
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Academic/University Program
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Return to Play/Learn