Faculty & Staff
Program Director, Interim Dietetic Internship Director
Diane Stadler, PhD, RD, LD
Dr. Stadler received a BS in Special Studies with an emphasis in Genetics and Development from Davidson College, an MS in Nutrition Science from Virginia Tech, and a PhD in Human Nutrition from the University of Iowa. She completed a post-graduate fellowship at the Kennedy-Krieger Institute/Johns Hopkins Hospital and focused in nutritional interventions for children with developmental disabilities and/or gene disorders. She worked with dietetic interns at the University of Iowa and directed the Nutrition Science and the Coordinated Masters Programs at the University of Utah before joining the faculty at OHSU in 2000.
Dr. Stadler is an Assistant Professor of Medicine and Director of the Graduate Programs in Human Nutrition at OHSU. Her clinical work and research has focused on dietary interventions for the treatment and prevention of disease including:
- Nutritional rehabilitation of severely malnourished children in Zambia, Africa
- Nutrition education and growth monitoring of infants and young children at risk for malnutrition in the rural mountainous region of eastern Honduras
- Dietary treatment of children with rare genetic disorders
- Use of extremely high fat ketogenic diets for children with severe, unresponsive seizure disorders
- Comparing the health risks and benefits of very low-and high-complex carbohydrate diets for weight loss in obese adults
- School-based interventions for diabetes prevention
Master's Program Director
Melanie Gillingham, PhD, RD
Dr. Melanie Gillingham is an Assistant Professor in the department of Molecular & Medical Genetics and the Graduate Programs in Human Nutrition at Oregon Health & Science University. She received her BS in Nutrition from Texas Christian University, Ft. Worth, TX & her MS in Nutritional Sciences from University of Oklahoma, Oklahoma City, OK & completed her PhD at University of Wisconsin-Madison, Madison, WI. Dr. Gillingham coordinates the Masters programs and maintains an active research laboratory. Her research interests are on the nutritional treatment of inborn errors of metabolism and the effect of diet on fatty acid oxidation. The mitochondrial fatty acid oxidation (FAO) pathway is critical for survival during periods of fasting and for the maintenance of normal body weight and insulin sensitivity. The Gillingham Laboratory has been investigating the metabolic consequences of genetic disorders in the FAO pathway including inherited deficiency of very-long chain acyl CoA dehydrogenase (VLCAD), long-chain 3-hydroxyacyl CoA dehydrogenase (LCHAD) and carnitine palmitoyltransferase type 1A (CPT1A) deficiencies. FAO disorders are inherited in an autosomal recessive manner and collectively have an incidence of 1:9000 live births. Infants with a FAO disorder typically present with hypoketotic hypoglycemia and Reye-like symptoms precipitated by fasting or illness. The treatment for long-chain fatty acid oxidation disorders has been primarily with a modified diet including avoiding long periods of fasting, and frequent high carbohydrate meals. We have been investigating alternative nutritional approaches including fish oil supplements, medium-chain triglyceride supplements prior to exercise, and high protein diet low-fat diets on the outcomes and complications of these disorders. Dr. Gillingham is an active member of the Genetic Metabolic Dietitians International, the Society of Inherited Metabolic Disease, American Society of Nutrition and The Academy of Nutrition and Dietetics.
Master's Program Coordinator & Instructor
Julie McGuire, MS, RD, LD
Julie began her academic career at Whitman College in Walla Walla, WA, where she received a BA in Biology and Environmental Studies. After time spent volunteering with AmeriCorps and working in the field of clinical research, she returned to school and received a BS in Nutrition and Food Management from Oregon State University. She is an alumna from the program having completed her dietetic internship and MS in Clinical Nutrition at OHSU. Julie has worked as a clinical dietitian at Legacy Emanuel Medical Center and the Portland VA Medical Center. She has also instructed the Medical Nutrition Therapy course for the School of Biological and Population Health Sciences at Oregon State University. Julie's professional interests include oncology, diabetes, informatics, and the application of clinical research to the field of nutrition. Professional affiliations include the Academy of Nutrition and Dietetics and the Oregon Academy of Nutrition and Dietetics, where she is currently a board member. She is also a Nutrition Physical Exam Trainer for the Academy of Nutrition and Dietetics.
Jeri (Greenberg) Finn, MS, RD, LD
Jeri received her MS in Nutrition and Food Management from Oregon State University in 2005 and completed the Mid-Willamette Valley Dietetic Internship in Salem. Prior to joining the OHSU Graduate Programs in Human Nutrition, she worked at the Oregon Dairy Council, where she managed the organization's school-based nutrition education programs. She joined the faculty in the Graduate Programs in Human Nutrition in 2010 as Internship Placement Coordinator and Instructor. Her professional interests include the application of evidence-based nutrition education to promote a healthier population. Professional affiliations include the Academy of Nutrition and Dietetics, Nutrition and Dietetic Educators and Preceptors Dietetic Practice Group (DPG), Weight Management DPG, and the Oregon Academy of Nutrition and Dietetics where she served on the board of directors.
Joyanna Hansen, PhD, RD, LD
Dr. Joyanna Hansen works as an instructor in the Graduate Programs in Human Nutrition and as a Metabolic Dietitian in the OHSU Metabolic Clinic. Dr. Hansen completed her BS in biochemistry and molecular biology from Liberty University in 2009. In 2013, she earned a PhD in Nutritional Sciences from Cornell University with concentrations in epidemiology and genomics. She went on to complete the OHSU dietetic internship in 2014. Her doctoral research focused on the interplay of genes, nutrition, and chronic disease, with a specific emphasis on associations between vitamin D status and adult lung function. Dr. Hansen has presented her research at the American Society for Nutrition and American Thoracic Society international scientific conferences and has authored or coauthored several peer-reviewed scientific manuscripts. Her continuing research interests include gene-diet interactions that influence health outcomes as well as dietary interventions to reduce chronic disease risk. Dr. Hansen has a strong interest in science communication and has written articles for the Cornell Chronicle and the American Society for Nutrition student blog. She is an active member of the American Society for Nutrition, the Academy of Nutrition and Dietetics, and the National Association of Science Writers.
Sandra van Calcar, PhD, RD, LD
Dr. Van Calcar completed her undergraduate work at Oregon State University and Master's Degree in Nutritional Sciences from the University of Wisconsin-Madison. She then served as a metabolic dietitian in the Biochemical Genetics Program at UW-Madison and her practice included both patient care and clinical research for those with inborn errors of metabolism. She finished her doctorate degree in Nutritional Sciences from UW-Madison in 2009. Her dissertation focused on the use of glycomacropeptide (GMP) as a new protein source for treatment of phenylketonuria (PKU). Dr. Van Calcar joined the faculty of the Department of Molecular and Medical Genetics and Graduate Programs in Human Nutrition in 2014. Her current research interests focus on nutrition management of inborn errors of metabolism (IEM), with emphasis on classical galactosemia, fatty acid oxidation disorders and pregnancy in IEM. She is a founding member of Genetic Metabolic Dietitians International and currently Past-President of this organization. Membership in other national professional organizations include the Academy of Nutrition and Dietetics and the Society of Inherited Metabolic Disease.
Alexis was born and raised in Portland, Oregon. She received her B.S. in General Science from Portland State University in 2012 and studied French and dance on the side. While at PSU, she lead a team to assist WISDOM in writing a grant for their Wisdom of the Elders Radio Series, an American Indian public radio program, to promote awareness of indigenous culture, issues, and community involvement. Alexis started working for the OHSU Provost Office in 2013 supporting affiliated offices. She loves connecting with people from various departments and participating in OHSU activities and events such as the Farmer's Market, Emeritus Luncheon, CDI events, and IPE events. Alexis joined the Graduate Programs in Human Nutrition as Administrative Coordinator in August 2015 and is excited to work more closely with students and the program.