Endocrinology 209 Crossroads Place Mt. Vernon, IL 62864 Endocrinology Gastroenterology & Hepatology Nephrology Hours: Monday - Friday: 8:00 am - 5:00 pm Phone: 618-244-4313 Fax: 618-244-5348 Call 618-244-4313 for an appointment. To self-schedule an appointment online visit, CrossroadsAnytime.com. ASSOCIATED CARE Endocrinology Adrenal Disorders Hyperthyroidism Pituitary Disorders ASSOCIATED PROVIDERS Sikarin Upala, MD, MS