{
  "resourceType": "StructureDefinition",
  "id": "custom-practitioner-profile",
  "url": "http://example.org/fhir/StructureDefinition/custom-practitioner-profile",
  "name": "CustomPractitionerProfile",
  "status": "active",
  "date": "2025-01-11",
  "publisher": "Example Organization",
  "kind": "resource",
  "abstract": false,
  "type": "Practitioner",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Practitioner",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Practitioner.name",
        "path": "Practitioner.name",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "HumanName"
          }
        ]
      },
      {
        "id": "Practitioner.telecom",
        "path": "Practitioner.telecom",
        "min": 1,
        "type": [
          {
            "code": "ContactPoint"
          }
        ]
      },
      {
        "id": "Practitioner.identifier",
        "path": "Practitioner.identifier",
        "min": 2,
        "max": "*",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "system"
            }
          ],
          "rules": "open"
        }
      },
      {
        "id": "Practitioner.identifier:nationalID",
        "path": "Practitioner.identifier",
        "sliceName": "nationalID",
        "min": 1,
        "patternIdentifier": {
          "system": "http://example.org/national-id",
          "value": "^[0-9]{14}$"
        }
      },
      {
        "id": "Practitioner.identifier:licenseNumber",
        "path": "Practitioner.identifier",
        "sliceName": "licenseNumber",
        "min": 1,
        "patternIdentifier": {
          "system": "http://example.org/medical-licenses",
          "value": ".+"
        }
      },
      {
        "id": "Practitioner.practitionerRole",
        "path": "Practitioner.practitionerRole",
        "min": 1
      },
      {
        "id": "Practitioner.practitionerRole.organization",
        "path": "Practitioner.practitionerRole.organization",
        "min": 1,
        "type": [
          {
            "code": "Reference",
            "targetProfile": [
              "http://hl7.org/fhir/StructureDefinition/Organization"
            ]
          }
        ]
      }
    ]
  }
}