Omnicom Taps Veeva Veteran Tom Schwenger to Lead Omnicom Health

Omnicom has named Tom Schwenger chief executive officer of Omnicom Health Marketing, handing the top job in its healthcare network to a Veeva Systems veteran just months after absorbing IPG Health. Dana Maiman, who held the CEO seat for roughly a year, is out of the role.

The company announced the move last week. Schwenger will run Omnicom Health's global marketing agencies and report into a structure where he works alongside Michael Larson, chair of Omnicom Health, during a transition period. Omnicom did not say what Maiman does next, or why the change came after only twelve months.

What does Schwenger actually take over?

The mandate covers client engagement models across three industries: pharma, biotech, and consumer healthcare. Schwenger and the group's agency leaders and integrated client leads will keep using Omni and Acxiom, Omnicom's life-science data and AI marketing intelligence platforms (systems that pool audience data to target healthcare prescribers and consumers).

The backdrop matters more than the title. Omnicom's acquisition of Interpublic Group created the world's largest advertising holding company, and IPG Health — IPG's group of healthcare marketing agencies — has been folded into Omnicom Health's network. Schwenger inherits a bigger, messier organization than the one Maiman started with.

"I'm excited to join Omnicom Health at such a pivotal moment, leveraging the scale and capabilities of the newly combined organization to help clients navigate the rapid transformation across the pharma, biotech, and healthcare sectors," Schwenger said. "This internal evolution, coupled with powerful market dynamics, creates an extraordinary opportunity to drive innovation and growth."

Note what the statement doesn't say. There's no revenue figure, no client list, no headcount for the combined network. "Pivotal moment" and "extraordinary opportunity" are doing a lot of lifting. The claim that internal restructuring plus market chaos equals growth is a hypothesis, not a result.

Why Schwenger got the call

His record has one hard number attached. Before this appointment, Schwenger was president and chief customer officer at Veeva Systems, a cloud computing company for the life sciences industry, where he pushed early AI adoption and, by Omnicom's account, helped triple the organization's revenue. He brings more than three decades of experience driving growth and strategic initiatives across pharma, biotech, and healthcare.

Tripling revenue at a software company is not the same job as integrating two competing healthcare agency networks. One sells subscriptions; the other manages creative teams, client conflicts, and talent retention. Omnicom didn't say which metrics will define success for Schwenger in year one.

How strong is the franchise he inherits?

By external measures, strong. Omnicom Health was recently named Healthcare Network of the Year at the 2026 MM+M Awards, an industry recognition that positions it as a leading force in healthcare marketing. Awards don't bill clients, but they help recruit them.

The strategic logic is straightforward. Pharma and biotech marketing budgets are consolidating around large data-driven platforms, and Omnicom now owns the scale — a combined agency network, proprietary data infrastructure in Omni and Acxiom, and a leader with a software-industry pedigree in AI adoption. Schwenger's stated job is to convert that stack into engagement models clients will pay for.

The open questions are the usual ones after a mega-merger: retention of IPG Health talent, client conflicts between legacy accounts, and whether a CEO change one year into Maiman's tenure signals strategy or churn. Omnicom addressed none of these in the announcement. Schwenger starts with the tools; the proof comes later.