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Welcome to Our Newest Members – Debbie, Sarah, and Hannah

Posted on Thursday, January 25, 2024

Deborah Purcell, MD

Deborah attended Stanford University and earned a BS in Biology. She then earned her MD and did her pediatric residency at OHSU. Deborah is board certified in pediatrics and a current member of the American Academy of Pediatrics. She founded Westside Pediatric Clinic in 1983 and was the president there for 38 years before retiring in 2021. In the past, Deborah was a member of the Oregon Pediatric Society and the Medical Society of Metropolitan Portland. She volunteers many hours as an Elder at her church, Valley Community Presbyterian. She also enjoys singing in the church choir, golfing, gardening, hiking, traveling with her husband, and reading. Deborah has 3 children and 4 grandchildren. She is a donor to the Portland Opera and many other local organizations.

Sarah Stebbins, PhD


With over 20 years' experience developing and delivering curriculum for workshops, seminars, and university classes, Sarah has developed an enthusiastic following for her training programs and organizational consulting work. Her clients include Fortune 500 companies, the Federal Government, colleges and universities, and large, diverse non-profit organizations.

Most recently, Sarah completed her third year as the instructor of a nine-month Leadership Institute she co-developed for the Portland Community College System, the largest community college system in Oregon.

To help her clients better implement change, in 2020 Sarah published From Fire to Water: Moving Through Change, The Six Steps for Personal Resiliency, a toolkit designed to help individuals thrive during times of rapid change. In addition to teaching and consulting, she is an executive coach to support leaders as they manage organizational, professional, and personal change.

In addition to kayaking, pursuing her music, and supporting the ‘re-wilding’ movement, Sarah’s passion for social justice is demonstrated with her extensive DEI involvement. And just as aside…she is both a Duck and Beaver with a MS from University of Oregon and a PhD from OSU. And yes, when attending the Civil War Game, she switches sides at halftime!

Hannah Kravitz, PhD

Hannah earned a PhD in Applied Mathematics from the University of Arizona in 2022. She was an ARCS Scholar for the last two years of graduate school. A month after she defended her thesis, she moved to Portland to start her career as an Assistant Professor in Portland State University's Department of Mathematics & Statistics. Because Hannah is a tenure-track research professor, her work has several components: research, teaching, service, and outreach.

Hannah’s research focuses on network theory, particularly using numerical methods (computer algorithms) to solve problems that would otherwise be difficult or impossible to solve analytically. Two areas she is currently focusing on are: 1) the localization of waves on random networks (applications to optical science) and 2) an epidemic study exploring how geographic network structure (cities and roads) enhances the spread of contagious disease. Hannah considers herself one of the lucky research professors who also loves teaching; She enjoys developing connections with students and seeing their confidence grow. Hannah is a member of a few professional associations: Society for Industrial and Applied Mathematics (SIAM) and the American Mathematical Society (AMS), as well as some PSU-specific organizations like the recently developed Portland Institute for Computational Science (PICS), an NSF-funded Research Training Group in Computation and Data Enabled Science (CADES), and various departmental committees.