
Katie Keller, MD

McCall McPherson, PA-C
Chief Medical Officer
As Chief Medical Officer and clinical partner at Modern Thyroid Clinic, Dr. Katie Keller plays a pivotal role in guiding the practice’s mission: to provide root-cause, personalized care for thyroid and hormone conditions. A Board-Certified Family Medicine Physician, she brings advanced training from the Institute for Functional Medicine, blending conventional and integrative medicine to deliver highly individualized care.
Dr. Keller also holds specialized training in Osteopathic Manipulation and the Fascial Distortion Model—tools that support the clinic’s commitment to treating the full person, not just managing lab results. Her expertise helps shape the clinic’s evolving protocols and ensures every patient receives care that is comprehensive, consistent, and aligned with the latest evidence.
As a mentor to fellow clinicians and a leader in patient-centered innovation, Dr. Keller is passionate about transforming how thyroid and hormone issues are understood, approached, and resolved. Her leadership at MTC reflects a deep commitment to wellness, collaboration, and lasting healing.