Endocrinology Experts

At Holston Medical Group, we’re pleased to provide you with a comprehensive focus in the area of Endocrinology & Metabolism.

About Endocrinology & Metabolism

Endocrinology involves the diagnosis and treatment of disorders and diseases that affect the endocrine system. For those who desire treatment for hormone imbalances, thyroid disease, disorders of the metabolism, obesity, infertility, diabetes, osteoporosis, problems with menopause, hypertension, lipid (cholesterol) problems, endocrine cancer, excessive hair growth or growth problems, our team of endocrinologists are prepared to provide the care you need.

Dr. Nannenga

Michael Nannenga, MD is board certified by the American Board of Internal Medicine with subspecialty of endocrinology and metabolism.

Dr. Nannenga has been practicing at HMG since 2011. He received his doctorate of medicine at Indiana University School of Medicine. He completed his residency at Mayo Clinic School of Graduate Medical Education.

Dr. Kennedy

Ryan Kennedy, MD received his Bachelor of Science degree from Carson-Newman College in Jefferson City, TN and his medical doctorate degree from West Virginia University School of Medicine in Morgantown, WV.

Both Dr. Kennedy and his wife Jessica are native to Bristol, where both of their fathers are practicing physicians. Dr. Kennedy enjoys snow skiing, hiking, basketball, spending time with his wife and daughter, and is an avid college football fan.