Reinventing healthcare one patient at a time

Meet the Team

  • Susan P. Demarest, MD
    Ellis Medical Group | Endocrine & Diabetes Care

    624 McClellan Street, Suite G06
    Schenectady, New York  12304
    Phone: 518.612.8600
    Fax: 518.612.8601

  • Allison D. Graziadei, MD
    Ellis Medical Group | Endocrine & Diabetes Care

    Medical Center of Clifton Park, 103 Sitterly Road, Suite 2700
    Clifton Park, New York  12065
    Phone: 518.579.2750

  • Dawn Dluge-Aungst, RPA-C, CDE

    Dawn Dluge-Aungst, RPA-C, CDE -  Physician Assistant

    Dawn is a physician assistant with Ellis Endocrine & Diabetes Care in Clifton Park, NY. Dawn graduated from Lycoming College (Williamsport, PA) in 1996 and Pennsylvania College of Technology (an affiliate of Penn State) in 1999. Dawn has been a physician assistant for 15 years with specialization in diabetes and endocrinology and has worked locally in that capacity since moving from Pennsylvania in 2001. She is a co-author of “Professional CGM Management Workflow” published in Endocrine Today in 2011. Special areas of interest include intensive management of diabetes, pump and sensor technology, and diabetes in pregnancy. She is a member of the American Diabetes Association and Endocrine Society.

  • Katie Valley, MSN, CDE, FNP-BC

    Katie Valley, MSN, CDE, FNP-BC - 

    Katie is a nurse practitioner with Ellis Endocrine & Diabetes Care in Schenectady, NY.

    Katie earned her Master's Degree from SUNY IT, Utica, NY and her Bachelor's from Drexel University, Philadelphia, PA. She is a member of the Nurse Practitioner Association, American Diabetes Association, American Association of Diabetes Educators and Endocrine Society. Katie is also a Certified Diabetes Educator.

  • Mary Pat Ambrosino, RD, CDE

    Mary Pat Ambrosino, RD, CDE  - Manager of Diabetes Care

    Mary Pat has a master's degree from Syracuse University in Human Nutrition and is a New York State Certified Dietitian Nutritionist. In addition to being a Registered Dietitian, MaryPat is a Certified Diabetes Educator. In her current position as manager and diabetes educator at Ellis Diabetes Care, Mary Pat brings many years of experience in the areas of Clinical Nutrition and Diabetes Education.

  • Shannon Klingebiel

    Shannon Klingebiel  - Dietitian and Diabetes Educator

    Shannon is a certified diabetes educator with Ellis Endocrine & Diabetes Care in Clifton Park, NY. She has more than 15 years of dietetic experience and is certified by the American Dietetic Association in Adult Weight Management. Shannon earned her bachelor’s degree from the University of Vermont, Burlington, VT and completed a dietetic internship at Saint Joseph College, West Hartford, CT. She is the winner of the 2001 New Hampshire Dietetic Association Young Dietitian of the Year. She is a member of the American Dietetic Association, American Association of Diabetes Educators and Hudson Valley Dietetic Association.