SEATTLE--(BUSINESS WIRE)--Marchex® (NASDAQ: MCHX), which harnesses the power of AI and conversation intelligence to provide actionable insights derived from prescriptive vertical-market data analytics, announced today that PDS Health®, a leading nationwide integrated healthcare support organization that helps dental, dental specialty, and primary care practice owners grow successful practices, has expanded its use of Marchex's platform to gain deeper visibility into marketing-driven patient eng.