Endocrinology is a subspecialty of Internal Medicine that focuses on patients who have a disease or medical condition in which there is excess or insufficient hormone production. Hormones produced in our bodies work together to maintain a balance of the intricate systems and mechanisms to keep us healthy. When these hormones are not balanced properly, we see adverse health effects and disease. For example, when insulin levels are abnormal, we may see metabolic syndrome or diabetes. Excess or insufficient thyroid hormone can cause very different complexes of symptoms and physiologic effects. Vitamin D and parathyroid hormone affect bone health. Imbalances in the pituitary gland affects multiple parts of the body. The endocrine system plays an essential role in all other systems in the body including cardiovascular, gastrointestinal, immune, among others. At Impact Endocrinology, Dr. Grethen provides care for patients with a variety of endocrine diseases and concerns.

At Impact Endocrinology, Dr. Grethen sees patients with a variety of endocrine conditions including type 1 diabetes, type 2 diabetes including patients on insulin pumps, CGMs, pre--diabetes, obesity, metabolic syndrome, thyroid disease, adrenal disease, pituitary disease, osteoporosis, calcium-related disorders and many others. She sees patients for one-time consultations and also manages chronic complex disease over the long-term. We invite you to experience the excellent endocrine care you deserve.