College of Naturopathic Medicine Faculty

Full-time Faculty

Joel P. Agresta, PT, DC, CCSP®


  • Western States Chiropractic College, DC, 1983

Tammy Ashney, ND


  • National College of Naturopathic Medicine, ND, 2009

Carrie Baldwin-Sayre, ND


  • National College of Naturopathic Medicine, ND, 2004

Richard Barrett, ND


  • National College of Natural Medicine, ND, 1986

John Brons, PhD, LAc


  • UCLA, PhD, 1978
  • Oregon College of Oriental Medicine, MAcOM, 1993

Ryan Chamberlin, DO


  • Western University of Health Sciences, DO, 1995

Bracey Dangerfield, PhD


  • Maharishi International University, PhD, 1992

Maleah Ermac, ND


  • National College of Naturopathic Medicine, ND, 2010

Leslie Fuller, ND


  • National College of Naturopathic Medicine, ND, 2009

Melanie Henriksen, ND, MSOM, MN


  • National College of Naturopathic Medicine, ND, MSOM, 2005
  • Oregon Health & Science University, CNM, 2009

Paul Kalnins, ND, LAc


  • National College of Naturopathic Medicine, ND, MSOM, 1998

Gaia J. Mather, ND


  • National College of Naturopathic Medicine, ND, 1990

Martin Milner, ND


  • National College of Naturopathic Medicine, ND, 1983

Jessica Nagelkirk, ND


  • National College of Natural Medicine, ND, 2012

Katherine Patterson, ND


  • National College of Naturopathic Medicine, ND, 2010

Steven Sandberg-Lewis, ND, DHANP


  • National College of Natural Medicine, ND, 1978

Nancy Scarlett, ND


  • National College of Naturopathic Medicine, ND, 1997

Thomas Walton, DC


  • University of Western States, DC, 2010

Anna Wieman, ND


  • National College of Natural Medicine, ND, 2011

Kimberly Windstar, MEd, ND


  • National College of Natural Medicine, ND, 1991
  • California State College, MEd, 1982

Adjunct Faculty

Amy Bader, ND


  • National College of Naturopathic Medicine, ND, 2000

Laura Baffes, DC


  • National College of Chiropractic, DC, 1992

Karima Bassalé, ND


  • National College of Natural Medicine, ND, 2011

Roger Batchelor, DAOM. LAc


  • Oregon College of Oriental Medicine, DAOM, 2005

Alicia Bigelow, ND


  • National College of Natural Medicine, ND, 2004

Nathaniel Bingham, ND


  • National College of Naturopathic Medicine, ND, 2013

Ryan Bradley, ND, MPH


  • University of Washington, MPH, 2009
  • Bastyr University, ND, 2003

Meghan Brinson, ND


  • National College of Natural Medicine, ND, 2010

Jennifer Brusewitz, ND


  • National College of Naturopathic Medicine, ND, 2000

Aaron Campbell, ND


  • National College of Naturopathic Medicine, ND, 2002

Laurent Chaix, ND


  • National College of Naturopathic Medicine, ND, 1995

Loch Chandler, ND, MPH


  • National College of Natural Medicine, ND & MSOM, 2001
  • Portland State University, MPA-HA, 2014

Cesilie Cocks, ND


  • National College of Natural Medicine, ND, 2014

Elizabeth Collins, ND


  • National College of Naturopathic Medicine, ND, 1996

Stephanie Culver, ND


  • National College of Natural Medicine, ND, 2014

Catherine Darley, ND


  • Bastyr University, ND, 2002

Elizabeth Davidson, ND


  • National College of Natural Medicine, ND, 2012

Daniel DeLapp, ND, MAcOM, DC


  • Los Angeles College of Chiropractic, DC, 1986; Oregon College of Oriental Medicine, MAcOM, 1996; National College of Naturopathic Medicine, ND, 1997

Regina Dehen, ND, MAcOM


  • National College of Naturopathic Medicine, ND, 1997
  • Oregon College of Oriental Medicine, MAcOM, 1995

Lysanji Edson, ND


  • National College of Naturopathic Medicine, ND, 1996

Durr Elmore, DC, ND


  • Western States Chiropractic College, DC, 1984
  • National College of Naturopathic Medicine, ND, 1984
  • MSOM, National College of Naturopathic Medicine, 2004

Andrew Erlandsen, ND


  • National College of Naturopathic Medicine, ND, 2011
  • University of Maine, BS Food Science & Nutrition

Sheryl Estlund, ND


  • National College of Naturopathic Medicine, ND, 2003

Christie Fleetwood, ND, RPh


  • Bastyr University, ND, 2004
  • BS, Pharmacy, Medical College of Virginia/Virginia Commonwealth University, 1988

Steve Gardner, ND, DC


  • Western States Chiropractic College, DC, 1977; National College of Naturopathic Medicine, ND, 1994

Jennifer Gibbons, ND


  • National College of Naturopathic Medicine, ND, 1998

Megan Golani, ND


  • National College of Natural Medicine, ND, 2012

Mary Grabowska, ND, MAcOM


  • Oregon College of Oriental Medicine, MAcOM, 1994
  • National College of Naturopathic Medicine, ND, 1993

Alena Guggenheim, ND


  • National College of Natural Medicine, ND, 2007

Tim Irving, DC


  • Western States Chiropractic College, DC, 2005
  • University of Bridgeport, MS, 2009

Pamela Jeanne, ND


  • National College of Natural Medicine, ND, 1990

Clyde Jensen, PhD


  • University of North Dakota, PhD, 1974

Keivan Jinnah, ND, MSOM


  • National College of Natural Medicine, ND, MSOM, 1998

Sonia Kapur, PhD


  • Postgraduate Institute of Medical Education & Research, Chandigarh, India, PhD Molecular Biochemistry, 1994
  • Panjab University Chandigarh, India, MSc (Hons.). Biochemistry, 1986

Thomas Karnes, J.D


  • Lewis & Clark College, J.D, 2008

Rosetta Koach, LMT


  • National College of Natural Medicine, ND, 2004

Dohn R. Kruschwitz, ND


  • University of Iowa College of Medicine, MD, 1966
  • National College of Naturopathic Medicine, ND, 1997

Richard Lok, ND


  • National College of Naturopathic Medicine, ND, 2009

Glen Nagel, ND


  • National College of Naturopathic Medicine, ND, 1993

Heidi Peterson, ND


  • National College of Naturopathic Medicine, ND, 1999
  • Northwestern University, MS, 1993

David Riley, MD


  • University of Utah Medical School, MD, 1983

Phyllecia Rommel

Kayle Sandberg-Lewis, LMT


  • Goddard College, Master of Behavioral Medicine, 2000

Allison Siebecker, ND, LAc


  • National College of Naturopathic Medicine, ND, MSOM, 2005

Shawn Soszka, ND, LAc


  • National College of Natural Medicine, MSOM,2001
  • National College of Natural Medicine, ND, 2000

Meghan Sperandeo-Fruge, ND


  • National College of Natural Medicine, ND, 2013
  • McNeese State University, BS Science, Biological Sciences, 2003

Jill Stansbury, ND


  • National College of Natural Medicine, ND, 1988

Timothy D. Stecher, DC


  • Western States Chiropractic College, DC, 1996

Lisa Taulbee, ND


  • National College o Natural Medicine, ND, 2010

Gary Weiner, ND, LAc


  • National College of Naturopathic Medicine, MSOM, 2005
  • National College of Naturopathic Medicine, ND, 1997

Jared Zeff, ND


  • National College of Naturopathic Medicine, ND, 1979

Katherine Zieman, ND


  • National College of Natural Medicine, ND, 1993

Matthew S. Zorn, ND


  • National College of Natural Medicine, ND, 2002

Heather Zwickey, PhD


  • University of Colorado Health Sciences Center, PhD, Immunology & Microbiology, 1998