Dr. Richard Siebert

Alina Elperin is a primary care provider, practicing in Internal Medicine and Bariatric Medicine in Bannockburn, Illinois. Dr. Elperin is rated as an Advanced provider by MediFind in the treatment of Heart Failure with Preserved Ejection Fraction (HFpEF). Her top areas of expertise are Adult Still's Disease, Heart Failure with Preserved Ejection Fraction (HFpEF), Chronic Lymphocytic Leukemia (CLL), and End-Stage Renal Disease (ESRD).

Katarzyna G. Zarnecki, DO, a specialist in endocrinology, diabetes & metabolism at Endeavor Health, treats a range of hormonal and metabolic disorders including thyroid disease, pituitary tumors and diabetes. She speaks English and Polish and offers advanced therapies such as insulin pump management and thyroid biopsies. Dr. Zarnecki is rated as a Distinguished provider by MediFind in the treatment of Heart Failure with Preserved Ejection Fraction (HFpEF). Her top areas of expertise are Diabetic Neuropathy, Hyperparathyroidism, Type 2 Diabetes (T2D), and Diabetic Nephropathy.

Megan Crawford, DO, an endocrinologist at Endeavor Health, provides care for patients with hormonal and metabolic conditions, including diabetes, thyroid disorders and osteoporosis. She develops personalized treatment plans that support patients in managing long-term endocrine health and improving quality of life. Dr. Crawford is rated as a Distinguished provider by MediFind in the treatment of Heart Failure with Preserved Ejection Fraction (HFpEF). Her top areas of expertise are Type 2 Diabetes (T2D), Hyperparathyroidism, Hypothyroidism, and Thyroid Cancer.