diff --git a/netbox/circuits/migrations/0039_provider_remove_deprecated_fields.py b/netbox/circuits/migrations/0039_provider_remove_deprecated_fields.py
new file mode 100644
index 000000000..ceb1803ca
--- /dev/null
+++ b/netbox/circuits/migrations/0039_provider_remove_deprecated_fields.py
@@ -0,0 +1,59 @@
+import os
+
+from django.db import migrations
+from django.db.utils import DataError
+
+
+def check_legacy_data(apps, schema_editor):
+    """
+    Abort the migration if any legacy provider fields still contain data.
+    """
+    Provider = apps.get_model('circuits', 'Provider')
+
+    provider_count = Provider.objects.exclude(asn__isnull=True).count()
+    if provider_count and 'NETBOX_DELETE_LEGACY_DATA' not in os.environ:
+        raise DataError(
+            f"Unable to proceed with deleting asn field from Provider model: Found {provider_count} "
+            f"providers with legacy ASN data. Please ensure all legacy provider ASN data has been "
+            f"migrated to ASN objects before proceeding. Or, set the NETBOX_DELETE_LEGACY_DATA "
+            f"environment variable to bypass this safeguard and delete all legacy provider ASN data."
+        )
+
+    provider_count = Provider.objects.exclude(admin_contact='', noc_contact='', portal_url='').count()
+    if provider_count and 'NETBOX_DELETE_LEGACY_DATA' not in os.environ:
+        raise DataError(
+            f"Unable to proceed with deleting contact fields from Provider model: Found {provider_count} "
+            f"providers with legacy contact data. Please ensure all legacy provider contact data has been "
+            f"migrated to contact objects before proceeding. Or, set the NETBOX_DELETE_LEGACY_DATA "
+            f"environment variable to bypass this safeguard and delete all legacy provider contact data."
+        )
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('circuits', '0038_cabling_cleanup'),
+    ]
+
+    operations = [
+        migrations.RunPython(
+            code=check_legacy_data,
+            reverse_code=migrations.RunPython.noop
+        ),
+        migrations.RemoveField(
+            model_name='provider',
+            name='admin_contact',
+        ),
+        migrations.RemoveField(
+            model_name='provider',
+            name='asn',
+        ),
+        migrations.RemoveField(
+            model_name='provider',
+            name='noc_contact',
+        ),
+        migrations.RemoveField(
+            model_name='provider',
+            name='portal_url',
+        ),
+    ]
diff --git a/netbox/circuits/migrations/0039_remove_provider_admin_contact_remove_provider_asn_and_more.py b/netbox/circuits/migrations/0039_remove_provider_admin_contact_remove_provider_asn_and_more.py
deleted file mode 100644
index efea9fe94..000000000
--- a/netbox/circuits/migrations/0039_remove_provider_admin_contact_remove_provider_asn_and_more.py
+++ /dev/null
@@ -1,29 +0,0 @@
-# Generated by Django 4.0.7 on 2022-09-15 17:20
-
-from django.db import migrations
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('circuits', '0038_cabling_cleanup'),
-    ]
-
-    operations = [
-        migrations.RemoveField(
-            model_name='provider',
-            name='admin_contact',
-        ),
-        migrations.RemoveField(
-            model_name='provider',
-            name='asn',
-        ),
-        migrations.RemoveField(
-            model_name='provider',
-            name='noc_contact',
-        ),
-        migrations.RemoveField(
-            model_name='provider',
-            name='portal_url',
-        ),
-    ]