Since announcing the formation of a new national Interior Design leadership team in May 2022, HGA continues to bolster its interior design practice across 12 national offices with newly positioned principals, office leadership, and department leaders.
Each interior designer brings extensive experience, expertise and leadership to a wide range of projects—from workplace, to healthcare, to higher education, arts, and other project types.
“HGA is fortunate to attract and retain some of the best design talent in the industry and bring diverse expertise to our clients,” said Paula Storsteen, NCIDQ, IIDA, National Interior Design Practice Leader and Design Principal. “These promotions are part of our newly framed interior design model that advances fresh ideas and perspectives, fosters professional career growth and success—and truly benefits our clients. Congratulations to the following team members.”
Principals
Heather Bachman
Heather is a Principal in our San Francisco office, where she focuses on healthcare interior design. She works on a range of projects, from interior renovations of outpatient and inpatient medical facilities to complex hospital master plans and replacement hospitals. She builds rapport with clients to envision spaces that create a positive patient experience and improve care delivery.
Heather Kampa, CID, IIDA, EDAC
Heather is a Principal in the Sacramento office, where she leads a creative and innovative team of designers working across workplace strategy, corporate, government, community, healthcare, and higher education markets. She supports the collaborative interest of her clients’ needs and shared values to create interior environments that promote positive user experiences.
Tamar Ribnick, WELL AP, NCIDQ
Tamar was recently promoted to Principal in Minneapolis, where she leads team processes, client relations, and new business opportunities in the Public | Corporate Practice Group. Ribnick specializes in interior design with a focus on workplace design, creating spaces that enhance work processes and collaboration for leading clients globally.
Diane Chilangwa, IIDA
Diane was recently promoted to Principal in our Washington D.C. office. She has more than 20 years of experience designing a range of interior projects for government and public clients, including new construction, renovations, and tenant improvements. Her strengths include project management, programming, space planning, interior finishes selection, and furniture specification.
Office Director
Susan Foong, CID, LEED AP, WELL AP,
Susan is a Design Principal and San Jose Office Director. She has more than 15 years of leadership experience specializing in workplace design, creating environments that anticipate user needs, attract top talent nationally, support occupant wellbeing, and capture an organization’s unique culture and identity. Through her work, she supports equity and an inclusive design process.
Interior Design Department Leaders
Mari Ansera, CID, IIDA, ASID
Mari is Interior Design Department Leader in Minneapolis, where she leads interior design for a range of projects, including higher education, healthcare, workplace, high-tech manufacturing, and worship. She creates spaces that holistically address the needs of clients and support the strategic goals of each unique project.
Emily Jelinek, IIDA, NCIDQ, LEED AP ID+C
Emily is the Interior Design Department Leader in Washington, D.C. She has more than 15 years of experience specializing in space planning, feasibility studies, construction documents, and material selection for workplaces, libraries, government, healthcare, and higher education projects. Through her collaborative design approach, she develops engaging and intelligent interior solutions.
Shannon McHugh, Associate AIA, LEED GA
Shannon is the Interior Design Department Leader in the San Francisco office specializing in workplace design. She has more than 10 years’ experience working on tenant improvements for a variety of clients in Silicon Valley. Well-versed in the latest workplace strategy research, she focuses on delivering the best workplace environment to help the user be successful.
Kosha Mehta
Kosha is the newly appointed Interior Design Department Leader in the San Jose office. She has more than 20 years of experience in the design and architecture industry. Her design portfolio includes corporate interiors, lab renovations, and build-out for technology companies throughout Silicon Valley.
Tracy Randall, CID, CHID, NCIDQ, EDAC, IIDA
Tracy is the Interior Design Department Leader in Sacramento, where she supports healthcare, workplace, government, arts, and higher education markets. She has more than 25 years of experience directing all aspects of interior architecture, including finishes, materials, detailing, furnishings, and sustainable, healthy products.
Tiera Robinson, IIDA, LEED AP, WELL AP
Tiera is the first Interior Design Department Leader in Southern California, directing initiatives in the Los Angeles and San Diego offices. She has extensive experience working with integrated teams to design workplace, healthcare, hospitality, and mixed-use projects nationally. She brings a unique perspective to her work, creating spaces that support human connection and innovation.
A Collaborative Model
HGA’s collaborative Interior Design leadership model—with three leaders at the helm—supports the firm’s award-winning national interior design practice. The leaders complement each other’s talent with targeted strategies: Design Principal Paula Storsteen cultivates the national practice; Principal Lisa Macaluso guides business development; and Senior Interior Designer Haley Nelson focuses on advancing expertise
For more information, read HGA Announces National Interior Design Leadership Team.