doktor

/doktor/

Cases

SingularPluralWhen to use it
nominativedoktorthe physiciandoktorlathe physiciansthe plain dictionary form — the doer of the sentence
genitivedoktornuthe physician'sdoktorlanıthe physicians'the owner — whose it is
accusativedoktornuthe physician (as the object)doktorlanıthe physicians (as the object)a specific, known object — whom or what
dativedoktorğato the physiciandoktorlağato the physiciansdirection or recipient — to where, to whom
locativedoktordaat / in the physiciandoktorladaat / in the physicianswhere it is; also having — mende bar, "I have it"
ablativedoktordanfrom the physiciandoktorladanfrom the physicianswhere it comes from; also "than" when comparing
When to use each case
nominative
the plain dictionary form — the doer of the sentence
genitive
the owner — whose it is
accusative
a specific, known object — whom or what
dative
direction or recipient — to where, to whom
locative
where it is; also having — mende bar, "I have it"
ablative
where it comes from; also "than" when comparing

The endings are the same ones the pronouns wear — that page explains when each case is used.

With an owner

One ownedSeveral owned
mydoktorummy physiciandoktorlarımmy physicians
yourdoktorungyour physiciandoktorlarıngyour physicians
his / herdoktoruhis / her physiciandoktorlarıhis / her physicians
ourdoktorubuzour physiciandoktorlarıbızour physicians
you all'sdoktoruğuzyou all's physiciandoktorlarığızyou all's physicians
theirdoktorlarıtheir physiciandoktorlarıtheir physicians

The overlap in the last rows is real, not a mistake: doktorları can mean "his / her physicians", "their physician", or "their physicians" — context decides.