Kathy Clewell is an Internal Medicine doctor in Poway, California. Dr. Clewell is highly rated in 17 conditions, according to our data. Her top areas of expertise are Spinocerebellar Ataxia Type 10, Spinocerebellar Ataxia Type 13, Spinocerebellar Ataxia Type 8, and Spinocerebellar Ataxia Type 6.