Sydney J. Decastilhos, NPC

Our board-certified endocrinologist has the expertise to diagnose your endocrine conditions and treat them with advanced therapies to restore your hormonal balance so you can be at your best every day. She specializes in treating the following conditions: endocrinology and metabolism, thryoid disorders, thyroid cancer, diabetes, adrenal disorders, pituitary disorders, bone disease and calcium disorders.

Dr. Knox is a board-certified Internal Medicine and a board-eligible Endocrinologist. She earned her undergraduate degree in Biological Science with an emphasis in plant biology at University of California at Davis; after which, her MD degree was obtained at American University of the Caribbean, School of Medicine. Following residency in Internal Medicine at Saint Agnes Medical Center in Fresno, California, she did her fellowship in Endocrinology at University of Arizona, in Tucson. Her medical interests are general endocrinology with a focus on transgender medicine. Dr. Knox believes in an evidence based approach to medicine with a focus on patient experience. She encourages patients to take an active role in their health; encouraging goal setting and communication to promote life-positive outcomes.

Zachary R. Lewton, MD in Santa Rosa, CA, is a healthcare provider within Providence, committed to delivering compassionate and excellent medical care to all individuals, particularly those in need. Rooted in values of compassion, dignity, justice, and integrity, the facility embodies God's healing love through the ministry of Jesus. Emphasizing health equity initiatives and community well-being, Zachary R. Lewton, MD is part of Providence's mission to serve with excellence. The facility offers a range of medical services, ensuring access to quality healthcare while upholding the values of the organization. Generated from the website content