The Thyroid Doctor's log after seeing his patients. I am a rare bird. I am one of the few physicians to practice clinical thyroidology only for 35 years. I am the sole physician at the Santa Monica Thyroid Center, and have the best thyroid blood lab with Dr.Carole Spencer, expert in thyroid hormone analysis, and thyroid cancer markers, as my lab director.The lab is also CLIA certified in thyroid cytology. Dr.Guttler is a thyroid ultrasonographer certified by AACE, and AIUM.