PricewaterhouseCoopers made some major changes Wednesday to the firm’s U.S. leadership team, including the creation of two new leadership roles, effective immediately.

Dana Mcilwain, who has served as PwC’s Advisory Leader, responsible for the U.S. firm’s consulting, deals and forensics services, will assume the new role of Services Leader. In this new role, Mcilwain will oversee the firm’s three lines of service—Advisory, Assurance and Tax—to drive a unified strategy across the firm.

Tim Ryan, who has served as PwC’s Assurance Leader, will assume the new role of Markets, Strategy, and Stakeholders Leader.

In this new role, Ryan will focus on the firm’s long-term strategy and oversee Markets & Sectors, Regulatory Affairs & Public Policy, Marketing & Sales, Human Capital, Corporate Responsibility, and Investor Relations. He will additionally continue to focus on issues related to audit quality, the PCAOB and other regulatory concerns.

In their new positions, Mcilwain and Ryan will report directly to PwC US chairman and senior partner Bob Moritz. Wednesday’s leadership announcement upholds the firm's commitment to the diversity of its leadership team, one-third of which comprises women.

“These new roles will better address market opportunities and the needs of PwC's various stakeholder groups,” Moritz said in statement. “The changes align firm functions to address the dynamic market environment in which we operate and provide us a unique opportunity to further develop leadership talent and drive positive change and to continue our focus on quality."

Vin Colman, previously the firm's East Region Vice Chair, will now lead PwC's Assurance practice and Miles Everson, previously PwC's Financial Services Advisory Leader, will now lead PwC’s Advisory practice.

In other moves, Gary Price, previously the firm’s market managing partner in Greater Atlanta, will succeed John Carter, who will retire in June 2014, as the firm’s chief administrative officer and partner affairs leader. Greg Garrison, currently PwC Clients & Markets Leader, will also retire in June 2014.