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Eric Johnson
National Director
Eric serves as National Director for Transwestern’s Healthcare Advisory Services Group. He is responsible for overseeing the leasing, tenant advisory, investment sales and development for healthcare clients across the country. He has over 23 years of experience in healthcare real estate and has been consistently recognized as one of Transwestern’s top national producers.
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Blake Williams
Chief Operating Officer - Healthcare Advisory Services
Blake directs the acquisition, development and asset management of healthcare property investments across the United States in close coordination with Transwestern’s Investment Group, Development Company and Healthcare Advisory Services Group.
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Jay Johnson
Managing Director
Jay leads our healthcare consulting and manages operations of our nationwide healthcare practice.  He has over 20 years’ experience helping hospitals, physicians and medical property owners maximize real estate performance.  He is a combat veteran, married with two children, and an active participant in community organizations. 
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Thomas Wittenberg
Senior Vice President
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Ken Adams
Senior Vice President
Ken serves as senior vice president for Healthcare Advisory Services in San Antonio, Corpus Christi and New Braunfels, Texas. He oversees the leasing and/or management of approximately two million square feet of medical office and ancillary buildings located on or near ten hospital campuses.
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John Bagwell
Senior Chief Engineer
John is currently Chief Engineer of four medical office buildings totaling 800,000 sq. ft. In addition, he oversees over 600,000 sq. ft. of garages and sky bridges, located in the Memorial Hermann Hospital Campus on Gessner in Houston. 
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Ashley Byrne
Property Manager
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Rob Bridges
Exec Managing Director
Rob leads Asset Services for Transwestern, overseeing property management, accounting, engineering and sustainability for a national portfolio comprising more than 225 million square feet. Rob is focused on driving cost savings and tenant satisfaction for property owners through innovative building technology advancements.
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Marianne Burish
Executive Vice President
Marianne is a multi-disciplinary practice leader in the Milwaukee brokerage office. As a trusted strategic partner, she brings an advisory approach and a “best-in-class” platform to create successful outcomes for tenants, building owners, investors and developers in today’s challenge-filled yet opportunity-rich real estate marketplace.
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Justin Brasell
Executive Vice President
Justin serves as Executive VP of Healthcare Advisory and leads Houston’s brokerage team. He has expertise in leasing, investment services, development, construction and asset management. Justin is consistently ranked as a top producer and serves on the company’s board of directors. He is married to his wife Abby and has three young daughters.
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Mark Boyce
Vice President
Mark represents owners and tenants in leasing and acquisitions of office properties throughout the Washington, D.C., metro area. He negotiates on behalf of his clients and leads them through complex real estate transactions by providing strategic planning, market analysis and financial modeling.
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Lisa Bovermann
Senior Vice President
As Senior Vice President within the Gulf Coast region, Lisa brings 11 years of agency leasing and development experience to Transwestern’s Healthcare Advisory Services Group. She represents healthcare clients in Houston and is responsible for providing agency leasing services to institutional clients including new developments, new leases, lease negotiations, relocations and lease restructuring in advance of lease expiration.
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Brooks Creech
Business Analyst
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Holcombe Crosswell
Business Analyst
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Heinrich Cronje
Senior Associate - Brokerage
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Barbara Carolina
Assistant Property Manager I
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Peter Conte
Senior Vice President
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Sarah Carter
Vice President
Sarah is a vice president in Transwestern’ s Houston Healthcare Advisory Services Group. She joined the team in July 2015 following her relocation from Dallas, TX. She is actively engaged in healthcare business development, marketing, and representing healthcare clients.

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