No, an oral hygienist is not a doctor. An oral hygienist is a licensed healthcare professional who focuses on preventing and treating oral diseases, as well as promoting oral health. They typically work under the supervision of a dentist and may perform tasks such as cleaning teeth, taking X-rays, and educating patients on how to maintain good oral hygiene.
On the other hand, a doctor is a highly trained and licensed medical professional who is able to diagnose and treat a wide range of medical conditions. They typically have a higher level of education and training than oral hygienists, and they may specialize in a specific area of medicine such as pediatrics, surgery, or internal medicine.