Leadership Shakeup at Omnicom Health: Dana Maiman Exits as Tom Schwenger Steps In
According to Campaign US, Dana Maiman will step down as CEO of Omnicom Health on November 6 after leading the group for 11 months. Tom Schwenger, formerly of Veeva Systems, will succeed her as CEO of the marketing business, while Michael Larson serves as interim head of the specialty division.
Context from Industry Pulse
The transition occurs shortly after the late 2025 merger between Omnicom and IPG, which consolidated two of the largest healthcare marketing networks in the industry. Maiman’s exit ends her tenure as the sole IPG executive to maintain a division-head role post-acquisition. The appointment of Tom Schwenger, whose background is centered on software and consulting rather than creative agency leadership, suggests a strategic shift toward technology-driven commercial scaling. With the specialty business currently without a permanent leader, the group is moving away from the unified CEO model Maiman established when managing over 40 agencies and 6,500 employees at IPG Health.
The departure of Dana Maiman marks a significant shift for Omnicom Health, where she served as the only executive from IPG to lead one of Omnicom’s primary divisions following the merger of the two holding companies. As Campaign US reports, Maiman previously spent nearly three decades in the healthcare advertising sector, including a lengthy tenure building IPG Health into a major industry player before the Omnicom acquisition closed in late 2025. Her final day with the organization is scheduled for Friday, November 6.
Taking over the marketing arm of the group is Tom Schwenger, who brings a background rooted in technology and commercial operations rather than traditional agency services. Campaign US notes that Schwenger most recently served as the president and chief operating officer at Veeva Systems. His professional history also includes a managing director role at Accenture, where he specialized in life sciences and scaling commercial healthcare operations.
This leadership change coincides with a restructuring of the Omnicom Health executive model. Instead of a single chief executive overseeing the entire group, the responsibilities are being divided. While Schwenger takes the helm of the marketing agencies, Michael Larson, the CEO of Omnicom Diversified Services Group, will manage the specialty business on an interim basis until a permanent leader is found.
During her brief time at Omnicom Health and her previous years at IPG, Maiman oversaw significant organizational changes. Campaign US highlights her role in consolidating McCann Health New York into Area 23 and launching the Rise & Run agency brand. Under her guidance, the combined networks represented roughly 20 percent of the top industry agencies by revenue in 2024. The new leadership structure aims to address evolving client needs through technology and artificial intelligence integration.
The Industry Pulse Bottom Line
Omnicom Health is transitioning from agency-centric leadership to a technology-focused model under Schwenger, signaling a push to integrate AI and data-driven commercial strategies into their global healthcare marketing operations.