Elliot Health System is a non-profit organization serving your healthcare needs since 1890.

Center for Diabetes Management

25 Leavy Drive
Bedford, NH 03110

Phone: (603) 663-4524 or Option 2 (603) 633-3130


About Our Staff




Certified in diabetes education, our nurses and dietitians have many years of experience and are actively involved in professional organizations committed to patient advocacy. We are dedicated to the advancement of patient education and are strong proponents of increased funding for diabetes research.


Marilyn Mills, MS, RD, LD, CDE

Marilyn is a Senior Clinical Dietitian and Certified Diabetes Educator at the Elliot Hospital and Nutrition Coordinator in Manchester's Hannaford Supermarkets. She enjoys bringing health and nutrition news to her patients and the community through individual counseling, group classes, in the aisles of Hannaford supermarket and also on WZID's FYI Mondays answering caller questions about food and nutrition. She has appeared on WMUR TV's Cook's Corner and provides nutrition counseling to the Cook Better Live Better at Elliot.

Marilyn obtained her Nutrition degree from Marymount College in N.Y. and her Masters in Human Nutrition from the University of New Haven in CT. She has over 20 years of clinical experience as a Licensed Dietitian providing nutrition therapy and diet counseling to the Greater Manchester community. Her special interests include: diabetes management, child and adult obesity treatment, eating disorders and food allergies and celiac disease.


Michelle Olsen, RD, LD

Michelle Olsen is a Clinical Outpatient Dietitian providing medical nutrition therapy at the Elliot Health System. She is a registered dietitian and a licensed dietitian in the State of NH. Michelle graduated from the University of New Hampshire with a Bachelor of Science degree in Nutritional Sciences. She specializes in pediatric nutrition, adult and childhood obesity, and the general diet management of cholesterol and insulin resistance. Michelle's area of interest includes sports nutrition.


Sandra Sheeran, RN, BSN, CDE

Sandy is certified with the National Certification Board of Diabetes Educators and has been practicing as a Diabetes Educator since 2003. She graduated with a Bachelor's Degree in Nursing from Wayne State University in Detroit, Michigan. Her areas of expertise include: individual and group classes for adults with Type 1, Type 2, and Gestational diabetes according to the American Diabetes Association and American College of Endocrinology standards, insulin pump starts, with a significant emphasis on teaching patients to adjust insulin according to their blood glucose patterns.

Sandy has a desire to educate health care professionals in the area of diabetes. Since 2006, Sandy has been serving as a consultant to New Hampshire Diabetes Education program and Southern NH Area for Health Education Coalitions. Her role with these programs is to develop and deliver programs for health care professionals in the area of diabetes. She has developed a workshop for nurses and medical assistants for CE credit and is the Clinical Supervisor for a diabetes educator mentorship program in NH.


Elizabeth Boucher, MPH, RD, LD.

Liz is a clinical dietitian at the Elliot’s Center for Advanced Nutrition Therapy and Diabetes Management. She has provided medical nutrition therapy to individuals with a variety of medical problems. However, her primary patient population is weight management and bariatrics, as she is a dietitian for the Elliot and Dartmouth-Hitchcock’s Bariatric Program.

She earned her Bachelor of Science Degree in Nutritional Sciences from the University of New Hampshire. She went on to complete her dietetic internship through the University of Connecticut and Hartford Hospital. Following her internship, Liz worked as an inpatient, critical care dietitian at Mount Sinai-Roosevelt Hospital in Manhattan, New York and obtained her Master’s in Public Health- Nutrition from the University of Massachusetts.


Nicole Castonguay, RD, LD

Nicole is a clinical dietitian at the Elliot Center for Advanced Nutrition Therapy and Diabetes Management. She provides nutrition counseling to patients participating in Elliot’s Bariatric Program in affiliation with Dartmouth-Hitchcock Medical Center, Manchester.

Nicole earned her Bachelor of Science in Kinesiology and in Food Science & Human Nutrition from the University of Maine. She then went on to complete her dietetic internship through Iowa State University. Following completion of her internship, Nicole provided outpatient nutrition counseling for weight management at a private practice in Falmouth, Maine. Currently, Nicole also works as an inpatient dietitian for Southern Maine Healthcare in Biddeford, Maine and serves as an in-store dietitian for Hannaford Supermarkets


Sarah Gurney, RD, LD

Sarah Gurney is a clinical dietitian at the Elliot Center for Advanced Nutrition Therapy and Diabetes Management. She is a registered dietitian and a licensed dietitian in the New Hampshire and Massachusetts. Sarah earned her Bachelor of Science degree in Nutritional Science and completed her dietetic internship at the University of New Hampshire.

Her areas of interest and specialty include: Diabetes and Weight Management, Adult and Childhood Obesity, Pediatric Nutrition, Oncology, Gastrointestinal Disorders and Cardiovascular Disease.


Hannah Greulich, RD, LD

Hannah Greulich, RD, LD is a clinical dietitian at the Elliot Center for Advanced Nutrition Therapy and Diabetes Management. She sees patients with a variety of goals and nutrition needs. Some of these include diabetes management, gastrointestinal disorders, and prevention of chronic disease. She is also a dietitian for Elliot’s Bariatric Program in affiliation with Dartmouth-Hitchcock Medical Center, Manchester.

Hannah graduated with a Bachelor of Science in Nutrition and Dietetics from the University of New Hampshire. This is also where she completed her dietetic internship. She has since worked as a member of the inpatient team here at the Elliot and with the Cardiac Rehabilitation Program at Catholic Medical Center. Currently, she is enjoying her work with this department while working to complete her Master’s in Nutrition.



For all appointments please call 603-663-4524