diff --git a/extensions/cornerstone/src/Viewport/Overlays/CustomizableViewportOverlay.tsx b/extensions/cornerstone/src/Viewport/Overlays/CustomizableViewportOverlay.tsx
index eae8a75..0883b06 100644
--- a/extensions/cornerstone/src/Viewport/Overlays/CustomizableViewportOverlay.tsx
+++ b/extensions/cornerstone/src/Viewport/Overlays/CustomizableViewportOverlay.tsx
@@ -553,7 +553,13 @@ function ExpertiseOverlayItem({ displaySetProps, customization }: OverlayItemPro
       }
     };
 
-    fetchExpertise();
+    // Get the expertise config value
+    const config = window.config || {};
+
+    // Only fetch expertise if the config value is true
+    if (config.expertise === true) {
+      fetchExpertise();
+    }
   }, [referenceInstance]);
 
   if (!expertise) return null;
diff --git a/platform/app/public/config/default.js b/platform/app/public/config/default.js
index 96309d9..e1f69dc 100644
--- a/platform/app/public/config/default.js
+++ b/platform/app/public/config/default.js
@@ -23,6 +23,7 @@ window.config = {
     // above, the number of requests can be go a lot higher.
     prefetch: 25,
   },
+  expertise: true, //* Tambahan untuk enable expertise (CustomizableViewportOverlay)
   // filterQueryParam: false,
   // defaultDataSourceName: 'dicomweb',
   defaultDataSourceName: 'local-proxy',