The Clinical Group
Our Founding Story
The Clinical Group was founded in early 2025 by Jonathan Marks, a trailblazer in healthcare real estate who after advising on over 2,000,000 square feet of medical office space identified critical gaps in the market for integrated solutions tailored to physicians, medical groups, hospitals and investors. Building on his groundbreaking work establishing Cresa’s Medical Practice Group in 2013, Jonathan created a platform with a collection of healthcare experts centered on medical real estate and healthcare advisory, which forms the backbone of our operations. Starting in the tri-state area of New Jersey, New York, and Pennsylvania, the company was designed to enhance clinical growth and maximize medical real estate results for our clients.
Growth and Milestones
In our inaugural year of 2025, The Clinical Group rapidly expanded its medical real estate offerings “Clinical Real Estate“, achieving key milestones such as facilitating major portfolio transactions and earning recognition with Jonathan Marks named to NJ Biz’s 2025 People to Watch In Healthcare. We’ve grown to being a go to provider in portfolio optimization, transaction management, healthcare brokerage and investment sales, leveraging medical market expertise and custom dashboards for data-driven decisions that have supported client success. By late 2025, we are set up for significant growth to continue to enhance long-term value.
Our “Clinical Advisory” Group, representing a vital segment of our services, focuses on elevating physician practice performance through clinical growth, operational enhancements, and value creation. This has enabled numerous practices to boost efficiency and realize higher valuations.
Meanwhile, Clinical Development has initiated projects for new medical facilities, from site selection to construction oversight, while the Physicians Fund has launched as an innovative investment vehicle, inviting participation from institutions and physicians in premium medical real estate ventures.
Our Team Today
Leading the charge alongside Jonathan Marks is a team of healthcare experts who each specialize in their given discipline to form a fully integrated platform that is second to none. Operating Partners Walter Lestrange and Jeff Tarlowe co-lead the Clinical Advisory Group, bringing over 50 years of experience in healthcare finance, operations, and growth from entities like Optum Care, Nuvance Health, and Zenyth Partners. Director of Portfolio Transactions Michael Swanson contributes 30+ years in commercial real estate, managing real estate portfolios for giants like DaVita and US Oncology. Principals Darren Lizzack and Randy Horning excel in Healthcare leasing and investment sales, with support from Client Coordinator Katie Alexander, and many more. This powerhouse team ensures expertise across advisory, medical real estate, development, and investments including Clinical Studios to tell the story and provide effective results.
Looking Ahead
As we approach 2026, The Clinical Group is poised for continued expansion, with a strong emphasis on advancing medical real estate solutions while growing our advisory, development, and investment arms. Our vision is an ecosystem where healthcare providers focus on patient care, supported by seamless real estate and operational strategies for enhanced value creation. Join us in shaping the future—explore services, career opportunities, or partnerships today.