This is the Continuous Integration Build of FHIR (will be incorrect/inconsistent at times). 
See the Directory of published versions
Real-world organization example (ENT)
{
  "resourceType" : "Organization",
  "id" : "f003",
  "active" : true,
  "type" : [{
    "coding" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/organization-type",
      "code" : "dept",
      "display" : "Hospital Department"
    }]
  }],
  "name" : "Burgers UMC Ear,Nose,Throat unit",
  "contact" : [{
    "purpose" : {
      "coding" : [{
        "system" : "http://terminology.hl7.org/CodeSystem/contactentity-type",
        "code" : "ADMIN"
      }]
    },
    "name" : [{
      "text" : "mr. F. de Hond"
    }],
    "telecom" : [{
      "system" : "phone",
      "value" : "022-655 7654"
    },
    {
      "system" : "email",
      "value" : "KNO@burgersumc.nl"
    },
    {
      "system" : "fax",
      "value" : "022-655 0998"
    }],
    "address" : {
      "line" : ["West Wing, floor 5"]
    }
  }],
  "partOf" : {
    "reference" : "Organization/f001"
  }
}
 
Usage note: every effort has been made to ensure that the
examples are correct and useful, but they are not a normative part 
of the specification.