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Eric Johnson
Executive Managing Director - National Healthcare Advisory Services
Eric serves as National Director for Transwestern’s Healthcare and Life Sciences Advisory Services Group. He is responsible for overseeing leasing, tenant advisory, investment sales and development for healthcare clients across the country. He has over 25 years of experience in healthcare and life science 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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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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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 Managing Director
Justin serves as Executive Managing Director of Transwestern’s Healthcare & Life Sciences Advisory Services Group and leads the Houston Healthcare & Life Sciences Brokerage Team. With 12 dedicated professionals, the Team leases over 6 million square feet of clinical & lab space, more than any other local firm, and has transacted over 2,000 lease and building sales in the last 5 years. The team specializes in agency leasing, tenant representation, investment services and strategic account management.
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Ashley Byrne
Senior Property Manager
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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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Sharon Collins
Assistant Property Manager
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Bernard Cortez
Engineer
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Kim Chavanel
Senior Property Manager
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Ashley Cassel Byrd
Senior Vice President
Ashley has been a leader on the Transwestern Healthcare Advisory services group since 2012. Serving as Senior Vice President, she is responsible for leasing over 2.1 million square feet of a medical office building portfolio in the greater Houston area. Her deep roots in the Houston medical community allows her the opportunity to execute direct deals with some of Houston's largest healthcare providers. Ashley is an innovator in marketing and several of her creative ideas have become national marketing standards within Transwestern. Her portfolio includes properties in The Medical Center, Downtown, the Heights, Museum District, Upper Kirby, Bellaire, Cy-Fair, Clearlake, Pearland, Friendswood, Sugar Land, Wharton, and the Westchase area.
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Christian Connell
Vice President
Christian is a Vice President on Transwestern’s Healthcare & Life Sciences Advisory Services Group. He is responsible for leasing over 1.2 million square feet of a medical office, life science and Ambulatory Surgery Center portfolio in the greater Houston area. He also specializes in Tenant Representation for Physicians, Healthcare, Ambulatory Surgery Centers, and Life Science clients. His portfolio includes properties in The Medical Center, Midtown, Museum District, Bellaire, Spring, Katy, Sugar Land, and Kingwood. He is actively engaged in business development, leasing, marketing, and research.  
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Sarah Carter
Vice President
Sarah joined Transwestern in 2015 as a Vice President in the Healthcare Advisory Services Group, with a focus on agency leasing.  She brings almost a decade of dedicated healthcare experience to her clients. She is responsible for the marketing and leasing of over 1 million square feet of medical office buildings in Houston and surrounding markets for institutional clients.
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Heinrich Cronje
Senior Associate
Heinrich is currently a Senior Leasing Associate at Transwestern. He is responsible for leasing over 1,000,000 square feet of medical office and life science assets in the greater Houston area. His portfolio includes properties in The Medical Center, Midtown, Downtown, Museum District, Bellaire, Spring, Katy, Sugar Land, Kingwood, and The Woodlands.  He is actively engaged in healthcare business development, leasing, investment sales, marketing & research, and tenant representation for hospitals and physicians.
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Peter Conte
National Director, Laboratory + Life Sciences
Bringing a unique skill set and broad experience to his role as head of Transwestern’s Laboratory + Life Sciences advisory group, Peter leads a national team that assists clients in every stage of the real estate process. With expertise spanning leasing, acquisition and disposition; portfolio analysis and optimization; and consulting services such as site selection, workforce demographics and space configuration, the group excels in assisting early-, mid- and late-stage-funded start-ups as well as time-honored companies manage growth through strategic cost analysis and innovative property solutions.
 
Additionally, Peter oversees the Laboratory + Life Sciences group in the Bay Area. His breadth of local real estate market knowledge and a holistic, hands-on approach has earned him the trust of individual, investor, and family trust clients.
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Brooks Creech
Vice President
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Michelle Castro
Senior Associate
Michelle Castro serves as an Associate in in Transwestern’s Healthcare and Life Sciences Advisory Services Groups. She specializes in working with owners and users of medical office, biotech and lab spaces on agency leasing, tenant representation, investment services and strategic account management.
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Justin Davis
Associate, Brokerage

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