Joen Madonna, Executive Director

Joen joined ArtSpan staff in 2014 as the Interim Executive Director and has served on the Board since 2013. In addition to regularly attending SF Open Studios as a patron since 1994, Joen has been affiliated with ArtSpan as an artist participant herself in 2003, and as a host of her husband, Paul Madonna's SF Open Studio event since 2004. With over 10 years experience as a Business Manager and Creative Agent, Joen is adept at project management, targeting and closing sales, public relations, and relationship management. She advises professional artists and other creatives on increasing audience exposure, creating business systems, applying for grants, and event coordination. She brokers licensing agreements and contract negotiations with corporations, organizations, and government institutions. Joen graduated from UC Berkeley with an honors degree in Cultural Geography, where she learned to blend her love for urban evolution and human culture with travel, and the exploration of emerging art. Beyond regularly participating in San Francisco's lively art scene, Joen visits museums, galleries, and alternative art spaces globally to help inform her best art business practices locally.

In 2019, Joen was noted as one of the 11 Most Powerful Women in Art in San Francisco as well as one of the 2019 Bay Area Women to Watch.




Vanessa Wilson is an arts professional passionate about breaking down the rhetoric of art speak and making art accessible to all communities. Her interest in the arts has driven her to pursue a number of collaborations and projects across the globe, covering a wide spectrum of experience both in “fine” and unconventional art spaces. In addition to working with brick-and-mortar institutions, Vanessa continues to experiment with alternative modes of engagement, education, and sales, exploring the boundaries faced by bringing the arts online, on social media, and on podcasts. At the core of her pursuits is a personal drive to bring underserved communities and artists into the spotlight. When not championing artists, Vanessa serves as an activist in a mutual aid organization supporting farmworkers.

Dianne Hoffman, Artist Services Manager

Dianne joined ArtSpan as an Artist Member in 2013 actively participating in ArtSpan’s workshops, mixers, annual Fall Open Studios and juried Spring auction.  In 2016 she officially became part of the ArtSpan staff team. Her twenty+ years of administrative support and customer service experience are ideally coupled with Dianne's first-hand understanding and relationship to the San Francisco arts community, enabling her with invaluable perspective.  She also serves on ArtSpan’s Open Studios Committee and is involved with its Mentorship program.  As a collage and assemblage artist, Dianne maintains an abundant workspace at Arc Studios and Gallery in the South of Market neighborhood of San Francisco. When she’s not in her studio preparing for an upcoming show, scavenging flea markets for unusual objects to turn into art materials, or assisting with the needs of her ArtSpan team, she is seeking out creative inspiration by attending galleries, museums, concerts, performances, and innovative events wherever they present themselves.


Nick Maltagliati, Program Assistant

Nick Maltagliati’s accomplishments as an artist, gallery assistant, and customer service professional has led him to join the amazing team of ArtSpan. He held a studio term at Root Division which opened many doors to this inclusive, albeit elusive, industry. He has been an ArtSpan Artist Member since 2018 and has been a dedicated proponent of SF Open Studios. He is dedicated to increasing the accessibility and welfare of working artists in the Bay Area. Nick’s creative side is rooted in the lost mysticism of our Californian landscape due to agricultural exploitation, wildfires, and superfluous housing developments. When not producing exposure-centric programs for our artists and community, Nick is most likely in the kitchen stirring up a 6-hour sauce or preparing a lemon tart.



Jason joined ArtSpan for their 2019 Benefit Art Auction, initially playing a one-night pivotal role in ensuring the event schedule was met and key players were where they needed to be. However, his empathetic attentiveness, fresh perspective, and the ease with which he complimented the existing team quickly engrained him as a staff member. Although originally from Southern California, where he experienced the first quarter century of his life, Jason now resides in Sonoma County. His unique perspective is shaped by science and the stars, ecology, biodiversity, health and nutrition, humor, soccer, travel, culture, food, fermented things and the discovery of local culinary treasures, community, music, the arts, and so much more. Jason plays drums with a Sebastopol-based band named Burnside. As a musician and artist-of-sorts, he extends his appreciation of—and care for—creatives in general, and thus is happy to be part of the ArtSpan community and culture.