Eisner Advisory Group LLC has announced the official admission of 25 new partners, effective October 1, 2026. This extensive round of partnership promotions spans multiple service lines, functional areas, and geographic locations across the United States. The announcement underscores structural developments within the organization, which functions alongside EisnerAmper LLP as part of a broader corporate framework comprising approximately 475 partners and 5,000 employees.
What Changed
Effective October 1, 2026, Eisner Advisory Group LLC elevated 25 professionals to partner status. These new partners represent a diverse range of specialized divisions, including Tax, Private Client Services, Outsourced Services, Forensic, Litigation & Valuations Services, Real Estate Services, Marketing, Legal Sector Services, Financial Services, and Commercial Services.
The newly admitted partners are distributed across numerous key office locations nationwide, reinforcing local and regional service delivery capabilities. The promotions span major metropolitan areas and regional hubs, reflecting the expanding operational footprint of the firm.
Key Appointments and Geographic Distribution
The 25 newly appointed partners include specialists stationed across various cities and practice disciplines:
- Michael Cianciaruso (Tax, Private Client Services, New York, NY)
- Brian Collins (Outsourced Services, Philadelphia, PA)
- Robert DiBari (Tax, Private Client Services, Boston, MA)
- Jolene Fraser (Forensic, Litigation & Valuations Services, Sacramento, CA)
- Rebecka Frate (Real Estate Services, Johns Creek, GA)
- Natalie Giesen (Real Estate Services, Birmingham, AL)
- Louie Jiang (Real Estate Services, Johns Creek, GA)
- Michelle Kershberg (Tax, Private Client Services, New York, NY)
- Kristen Lewis (Marketing, Philadelphia, PA)
- Julian Lopez (Tax, Private Client Services, San Diego, CA)
- Arthur Majors (Real Estate Services, Atlanta, GA)
- Kyle Mason (Legal Sector Services, Baton Rouge, LA)
- Eric McCutcheon (Real Estate Services, Iselin, NJ)
- Danielle McDonagh (Tax, Private Client Services, Burlington, MA)
- Brian McFarlane (Real Estate Services, New York, NY)
- Vicki Michalski (Tax, Private Client Services, Elgin, IL)
- John Newkirk (Real Estate Services, Birmingham, AL)
- John Regan (Financial Services, New York, NY)
- Richard Root (Outsourced Services, Long Island, NY)
- Adam Slavin (Tax, Private Client Services, West Palmbench, FL)
- Matthew Tomaszewski (Tax, Private Client Services, Chicago, IL)
- Alexander Turk (Financial Services, New York, NY)
- Bethany Wagner (Real Estate Services, Columbus, OH)
- James Wiltenmuth (Commercial Services, New Orleans, LA)
- Emily Zemanek (Private Client Services, Baltimore, MD)
In related organizational updates within the broader corporate ecosystem, Prosperity—an EisnerAmper Company—named Jeff Lenhart President and Brian W. Katz as Chief Investment Officer (CIO).
Business Implications and Sector Context
EisnerAmper is recognized as a top 15 accounting firm, while Eisner Advisory Group LLC stands as one of the world’s largest business advisory firms. The addition of 25 partners directly bolsters leadership depth across high-demand sectors such as real estate, private client services, and financial advisory.
Corporate leadership emphasized the strategic value of these promotions. According to company statements, “EisnerAmper is proud to welcome these talented new partners, each of whom is an accomplished professional with vast experience helping clients and colleagues achieve success by navigating an ever-evolving business landscape.” Leadership added that “these outstanding individuals have taken their careers to the next level, and I’m excited that they have joined the firm’s partnership.”
By scaling the partnership tier to approximately 475 partners supported by 5,000 employees, the combined entities maintain capacity to handle complex compliance, valuation, tax strategy, and outsourced operational needs for corporate and individual clients.
Who May Be Affected
Clients operating within real estate, financial services, legal sector services, and private client wealth management will experience direct engagement with the expanded partnership network. Regional operations in cities ranging from New York and Boston to Atlanta, Birmingham, San Diego, and New Orleans will see reinforced local leadership capable of directing specialized advisory teams.
Internal staff members within Eisner Advisory Group and EisnerAmper LLP also experience direct impacts through internal mobility and career progression pathways, illustrating clear vertical advancement opportunities within top-tier professional services firms.
What to Watch Next
Observers of the professional services sector will monitor how the newly appointed partners drive growth within specialized verticals like forensic litigation and outsourced business services. Further integrations and leadership appointments within affiliated entities, such as Prosperity under President Jeff Lenhart and CIO Brian W. Katz, will provide additional indicators of strategic expansion across wealth management and advisory operations.