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 an Advanced provider by MediFind in the treatment of Thyroid Storm. Her top areas of expertise are Diabetic Neuropathy, Hyperparathyroidism, Type 2 Diabetes (T2D), and Diabetic Nephropathy.

Kristina Todorova-Koteva, MD, an endocrinologist at Endeavor Health, provides personalized care for a broad range of hormonal and metabolic conditions. She focuses on patient education and informed decision-making, helping individuals understand their diagnosis and choose the best path forward. Dr. Todorova-Koteva believes that empowered patients are better equipped to improve their health and sustain long-term outcomes. Dr. Todorova is rated as an Advanced provider by MediFind in the treatment of Thyroid Storm. Her top areas of expertise are Type 2 Diabetes (T2D), Diabetic Nephropathy, Triple A Syndrome, and Thyroid Cancer.

Karolina Woloszyn Machnica, DO, an endocrinologist at Endeavor Health, provides care for patients with hormonal and metabolic disorders, including diabetes, thyroid disease and adrenal conditions. She works closely with patients to develop individualized treatment plans that support long-term endocrine health. Dr. Machnica is rated as an Advanced provider by MediFind in the treatment of Thyroid Storm. Her top areas of expertise are Hyperparathyroidism, Type 2 Diabetes (T2D), Familial Isolated Hyperparathyroidism, and Osteitis Fibrosa.

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 an Advanced provider by MediFind in the treatment of Thyroid Storm. Her top areas of expertise are Type 2 Diabetes (T2D), Hyperparathyroidism, Hypothyroidism, and Thyroid Cancer.

Jefferson Schott, DO, an internal medicine physician at Endeavor Health, provides primary care to adults 18 and older. He emphasizes preventive care, including vaccinations and cancer screenings, and prioritizes patient involvement in shared decision-making. With a focus on early diagnosis and minimizing unnecessary testing, Dr. Schott strives to create a welcoming, efficient office experience that supports long-term health and wellbeing. Dr. Schott is rated as an Advanced provider by MediFind in the treatment of Thyroid Storm. His top areas of expertise are Lymphofollicular Hyperplasia, Toxic Nodular Goiter, Chronic Cough, and Sitosterolemia.

Maan Barhoum is an Endocrinologist in Libertyville, Illinois. Dr. Barhoum is rated as a Distinguished provider by MediFind in the treatment of Thyroid Storm. His top areas of expertise are Thyroid Cancer, Anaplastic Thyroid Cancer, Hypercalcemia, and Milk-Alkali Syndrome.

David Vigder is a primary care provider, practicing in Internal Medicine in Bannockburn, Illinois. Dr. Vigder is rated as an Experienced provider by MediFind in the treatment of Thyroid Storm. His top areas of expertise are Memory Loss, Childhood Iron Deficiency Anemia, Infant Hyperglycemia, and Maturity Onset Diabetes of the Young.

Sara Chowdhury is an Endocrinologist in Bannockburn, Illinois. Dr. Chowdhury is rated as an Advanced provider by MediFind in the treatment of Thyroid Storm. Her top areas of expertise are Type 2 Diabetes (T2D), Thyroid Cancer, Anaplastic Thyroid Cancer, and Medullary Thyroid Carcinoma.

Jill Apel is an Endocrinologist in Bannockburn, Illinois. Dr. Apel is rated as an Advanced provider by MediFind in the treatment of Thyroid Storm. Her top areas of expertise are Thyroid Cancer, Follicular Thyroid Cancer, Medullary Thyroid Carcinoma, and Papillary Thyroid Cancer.

Romy Block is an Endocrinologist in Bannockburn, Illinois. Dr. Block is rated as an Advanced provider by MediFind in the treatment of Thyroid Storm. Her top areas of expertise are Hyperparathyroidism, Papillary Thyroid Cancer, Thyroid Cancer, and Anaplastic Thyroid Cancer.

Vivian Salazar, MD, an internal medicine physician at Endeavor Health, provides comprehensive, evidence-based care for adults 18 and older. She focuses on screening, prevention and wellness, partnering with patients to manage chronic conditions such as diabetes and high blood pressure. Dr. Salazar coordinates care with subspecialists when needed and is interested in emerging innovations in artificial intelligence, diabetes and obesity therapies, and cancer care. She is dedicated to helping patients achieve their health goals through prevention, early intervention and shared decision-making. Dr. Salazar is rated as an Experienced provider by MediFind in the treatment of Thyroid Storm. Her top areas of expertise are Sitosterolemia, Vitamin B12 Deficiency Anemia, Multiple Carboxylase Deficiency, and Folate Deficiency.

Michael J. Sommerfeld, MD, an internal medicine physician at Endeavor Health, provides primary care for adults with a focus on preventive health, chronic condition management and wellness support. He works with patients to develop care plans that promote long-term health outcomes. Dr. Sommerfeld is rated as an Experienced provider by MediFind in the treatment of Thyroid Storm. His top areas of expertise are Coronary Heart Disease, Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, and Hypertension.

Jonathan Brown, MD, an internal medicine physician at Endeavor Health, provides primary and preventive care for adults across all stages of life. With more than 25 years in practice, he prioritizes strong doctor-patient partnerships built on trust, open communication and mutual respect. Dr. Brown aims to create a welcoming, nonjudgmental environment where patients feel heard, safe and empowered to take charge of their health. Dr. Brown is rated as an Experienced provider by MediFind in the treatment of Thyroid Storm. His top areas of expertise are Temporal Arteritis, Undifferentiated Connective Tissue Disease (UCTD), Alcoholic Cirrhosis, and Visceromegaly.

Sharon Doss, MD, an Internal Medicine physician at Endeavor Health, provides primary care with a strong focus on prevention and lifestyle-related chronic conditions. She sees adult patients and incorporates her training in integrative medicine to help guide patients toward safe, effective and personalized treatment options. Dr. Doss emphasizes collaboration and shared decision-making, empowering patients to be active participants in their health. Dr. Doss is rated as an Experienced provider by MediFind in the treatment of Thyroid Storm. Her top areas of expertise are Chronic Cough, Vertigo, Sitosterolemia, and Fainting.

Arielle Levitan, MD, an internal medicine physician at Endeavor Health, provides primary care for adults across all stages of life. She emphasizes continuity of care, patient partnerships and personalized health planning. Her clinical interests include preventive medicine, chronic disease management and helping patients navigate healthcare decisions with evidence-based support. Dr. Levitan is rated as an Experienced provider by MediFind in the treatment of Thyroid Storm. Her top areas of expertise are Sitosterolemia, Familial Neurocardiogenic Syncope, Hypothyroidism, and Varicose Veins.

John M. Sultan, MD, an internal medicine physician at Endeavor Health, provides primary care for adults with an emphasis on integrative medicine. He combines conventional treatments with evidence-based complementary approaches to support patients’ overall health and long-term wellbeing. Dr. Sultan is rated as an Experienced provider by MediFind in the treatment of Thyroid Storm. His top areas of expertise are Irritable Bowel Syndrome (IBS), Chronic Cough, Coronary Heart Disease, and Atrioventricular Nodal Reentrant Tachycardia (AVNRT).

David Smiley is a primary care provider, practicing in Internal Medicine in Highland Park, Illinois. Dr. Smiley is rated as an Experienced provider by MediFind in the treatment of Thyroid Storm. His top areas of expertise are Bronchiectasis, Philadelphia-Negative Chronic Myeloid Leukemia, Chronic Myelogenous Leukemia (CML), and Childhood Acute Myeloid Leukemia.

Jaroslav Goldman is a primary care provider, practicing in Internal Medicine in Wheeling, Illinois. Dr. Goldman is rated as an Experienced provider by MediFind in the treatment of Thyroid Storm. His top areas of expertise are Familial Hypertension, Hypertension, Glucocorticoid-Remediable Aldosteronism, Colonoscopy, and Endoscopy.

Julia Ratner, MD, an internal medicine physician at Endeavor Health, provides primary care for adults with a focus on preventive health, routine screenings and chronic disease management. She collaborates with patients to support long-term wellness through personalized care. Dr. Ratner is rated as an Experienced provider by MediFind in the treatment of Thyroid Storm. Her top areas of expertise are Dementia, Familial Hypertension, Hypertension, and Glucocorticoid-Remediable Aldosteronism.

Susan M. Thomas, MD, an internal medicine physician at Endeavor Health, provides primary care for adults with a focus on preventive health, disease management and wellness education. Dr. Thomas supports her patients through ongoing care and coordinated treatment plans tailored to individual needs. Dr. Thomas is rated as an Experienced provider by MediFind in the treatment of Thyroid Storm. Her top areas of expertise are Postmenopausal Osteoporosis, Osteoporosis, Chronic Kidney Disease, and Infant Hyperglycemia.