This code system http://terminology.hl7.org/CodeSystem/ex-providerqualification defines the following codes:

CodeDisplayDefinition
311405 DentistDentist General Practitioner (DDS, DDM).
604215 OphthalmologistOphthalmologist.
604210 OptometristOptometrist.
 <status value="draft"/> <experimental value="false"/> <date value="2021-12-02T19:54:18-07:00"/> <publisher value="Financial Management"/> <contact> <telecom> <system value="url"/> <value value="http://hl7.org/fhir"/> </telecom> </contact> <description value="This value set includes sample Provider Qualification codes."/> <copyright value="This is an example set."/> <caseSensitive value="true"/> <valueSet value="http://terminology.hl7.org/ValueSet/provider-qualification"/> <content value="complete"/> <concept> <code value="311405"/> <display value="Dentist"/> <definition value="Dentist General Practitioner (DDS, DDM)."/> </concept> <concept> <code value="604215"/> <display value="Ophthalmologist"/> <definition value="Ophthalmologist."/> </concept> <concept> <code value="604210"/> <display value="Optometrist"/> <definition value="Optometrist."/> </concept> </CodeSystem>