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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 Byrd
Executive 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 2.7 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.
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Lisa Bovermann
Senior Vice President
Lisa Bovermann is a recognized leader in healthcare and life sciences real estate, serving as Senior Vice President within Transwestern’s Healthcare Advisory & Life Sciences Group. With nearly 20 years of experience in the industry, she brings strategic expertise and a holistic approach to delivering real estate solutions for institutional owners, healthcare providers, and life sciences developers across the Gulf Coast region and nationally.
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Chris Boyd
Senior Associate
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Samantha Bowser
Senior Brokerage Coordinator
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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 16 dedicated professionals, the Team leases over 9 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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Marianne Burish
Executive Vice President
Marianne is a multi-disciplinary practice leader in Transwestern’s Milwaukee 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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Avery Clynes
Analyst, Healthcare Advisory Services
Avery Clynes is an Analyst on Transwestern’s Healthcare Advisory Services team based in the Dallas office. She supports a team that manages a 22 million-square-foot healthcare real estate portfolio, delivering expertise in transaction management, tenant representation, market research and strategic real estate planning. Avery plays a key role in advising healthcare clients on optimizing their real estate strategies to align with operational goals and market dynamics.
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Mariela Cruz
Brokerage Coordinator
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Sarah Carter
Vice President
Sarah is a Vice President in Transwestern’s Healthcare & Life Sciences Advisory Services Group. She has a decade of dedicated healthcare knowledge and experience, which she utilizes to serve her clients. Specializing in Agency Leasing, Sarah is responsible for the marketing and leasing of over 1.2 million square feet of medical office buildings in Houston and surrounding markets for institutional clients. Her portfolio includes buildings in The Medical Center, Bellaire, Kingwood, Northwest, Conroe, Texas City, Lake Jackson, and Baytown.
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Brooks Creech
Vice President
Brooks is responsible for the underwriting and execution of capital markets transactions for healthcare owners. Outside of transactions, he also serves as a strategic advisor on a 17 million square foot healthcare portfolio evaluating all aspects of optimizing a real estate portfolio including development initiatives, cost saving measures and location analysis.
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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 million square feet of medical office, life science, and ambulatory surgery center properties, primarily in the greater Houston area. He also specializes in tenant representation for physicians, healthcare operators, ambulatory surgery centers, and life science clients. His portfolio includes properties across The Medical Center, Midtown, Museum District, Bellaire, Spring, Katy, Sugar Land, and Kingwood. In addition to Texas, Christian regularly transacts in multiple states as part of his broader healthcare platform strategy. He is actively involved in business development, leasing, marketing, and research.
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Sharon Collins
Assistant Property Manager
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Kim Chavanel
Senior Property Manager
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Bernard Cortez
Engineer
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Cheri Doyle
Managing Director, Healthcare Services
In partnership with Transwestern’s Mid-Atlantic and national healthcare teams, Cheri leverages robust relationships with health systems and 20 years of dedicated real estate experience in the medical sector to expand the firm’s market presence and guide clients to measurable, value-creating solutions. 
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Vince Femiano
Managing Director
Vince Femiano, Senior Vice President, is a member of Transwestern’s Healthcare Advisory Team. The Phoenix Healthcare Team provides services to physicians, medical building owners, practice groups, hospitals, healthcare providers, and others in the healthcare industry. Vince’s performance and achievement are directly related to his absolute commitment to his clients.
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Nicole Foster
General Manager

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