Participating Telehealth Provider Thirlby Clinic, PLC . Thirlbyclinic.com DA: 21 PA: 21 MOZ Rank: 42. Thirlby Clinic, PLC, has been offering quality, patient-centered internal medicine care to people from in and around Traverse City, Michigan, for almost 100 years; The practice aims to provide the absolute best in health care, so patients, caregivers, and health care professionals get the ....