New Jersey Brain and Spine's new, 16,222-square-foot facility at 650 From Road in Paramus. - PROVIDED BY NEW JERSEY BRAIN AND SPINE
New Jersey Brain and Spine's new, 16,222-square-foot facility at 650 From Road in Paramus. - PROVIDED BY NEW JERSEY BRAIN AND SPINE
Jessica Perry//June 4, 2025//
Clinical: Medical Real Estate Solutions continues its banner launch with more big news, debuting an affiliated consulting group led by a pair of industry leaders.
Walter LeStrange and Jeff Tarlowe will helm Clinical Advisory Group with a focus on aligning clinical, operational and strategic protocols to drive long-term, sustainable growth – as well as scalability – for medical practices, NJBIZ has exclusively learned.
Launched by Jonathan Marks in April, the latest announcement keeps momentum going for Hackensack-based Clinical.
“We are thrilled to launch Clinical Advisory Group and bring on the caliber of health care executives, such as Walter and Jeff, to enhance physician group throughout,” said Marks, founder and CEO of Clinical: Medical Real Estate Solutions and Clinical Advisory Group. “Collectively, they led their teams to extraordinary growth, both organically and through 200-plus practice acquisitions. They grew revenue more than tenfold and provided excellent leadership to 30 sub-specialty service lines at more than 600 locations.”
Both Tarlow and LeStrange previously worked together in executive positions at organizations such as Optum Care/Pro Health, Zenyth Partners. Most recently, at Health Plus Management, the former served in executive roles including chief administrative officer, and prior to that CFO.


According to LinkedIn, before joining the new venture, Tarlow served as CFO for Ledger Run Inc. of late, which offers a platform to simplify clinical trial business operations. At Clinical Advisory Group, he noted the consultancy combines “hands-on expertise with a proven track record of success to implement change and drive results for optimal growth and a successful exit.”
With more than 25 years’ experience, according to his LinkedIn page, LeStrange most recently served as chief operating officer at Health Plus Management. “Clinical Advisory will unlock the financial performance of physician groups to become operationally efficient and profitable by boosting EBITDA 15–20% over the first 18 months,” he said.
Clinical Advisory’s services also include expert advice on workflow redesign, supply chain management, revenue cycle optimization, information technology and cybersecurity readiness, C-suite strategy and coaching, as well as marketing and brand strategies.
After building the specialty practice at Cresa, former managing director Marks launched Clinical: Medical Real Estate Solutions. The new business aligns clinical strategy, operations and real estate. It serves a client base comprised of physicians, medical groups, hospitals, management services organizations and investors. Importantly, sector specialists take the lead.
“I’ve built a fairly good business. And the belief in the key to running it is having the right team to manage and run the portfolios,” Marks told NJBIZ in April. “And that’s why we’re going to be bringing on health care specific. It’s a non-broker led model where really it’s health care specialists,” he explained.
In May, Clinical expanded its team with a new hire from CBRE. Bringing more than 30 years of experience to the role, Michael Swanson joined as director of portfolio transaction management. Speaking with NJBIZ about the company’s launch the month prior, Marks noted plans to expand the company’s employee roster “aggressively.”