diff --git a/openapi/p4pa-auth.openapi.yaml b/openapi/p4pa-auth.openapi.yaml
index fd357ba..60c8ca1 100644
--- a/openapi/p4pa-auth.openapi.yaml
+++ b/openapi/p4pa-auth.openapi.yaml
@@ -586,6 +586,7 @@ components:
         - operatorId
         - organizationIpaCode
         - roles
+        - organizationId
       properties:
         operatorId:
           type: string
@@ -597,6 +598,9 @@ components:
           type: array
           items:
             type: string
+        organizationId:
+          type: integer
+          format: int64
     OperatorsPage:
       type: object
       required:
diff --git a/postman/p4pa-auth-E2E.postman_collection.json b/postman/p4pa-auth-E2E.postman_collection.json
index 47e1ac1..d5585c2 100644
--- a/postman/p4pa-auth-E2E.postman_collection.json
+++ b/postman/p4pa-auth-E2E.postman_collection.json
@@ -1,10 +1,10 @@
 {
 	"info": {
-		"_postman_id": "eb0efc3f-4546-4f06-922e-722a785ae180",
+		"_postman_id": "8f7a992f-183d-48b7-9d75-60a3adb2cd39",
 		"name": "p4pa-auth-E2E",
 		"schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json",
-		"_exporter_id": "15747968",
-		"_collection_link": "https://warped-astronaut-141685.postman.co/workspace/P4PA~9a8b7dd5-97b6-4dd0-b3f5-95f25fd0b455/collection/15747968-eb0efc3f-4546-4f06-922e-722a785ae180?action=share&source=collection_link&creator=15747968"
+		"_exporter_id": "29647564",
+		"_collection_link": "https://galactic-eclipse-948669.postman.co/workspace/New-Team-Workspace~be56c5f1-de0c-4252-95d0-ee80f35e2474/collection/29647564-8f7a992f-183d-48b7-9d75-60a3adb2cd39?action=share&source=collection_link&creator=29647564"
 	},
 	"item": [
 		{
@@ -337,6 +337,7 @@
 							"    ]\r",
 							"    jsonResponse.organizations.forEach(org => {\r",
 							"        pm.expect(org).have.property(\"operatorId\")\r",
+							"        pm.expect(org).have.property(\"organizationId\").that.is.a(\"number\");\r",
 							"        if(registeredOrganizations.includes(org.organizationIpaCode)){\r",
 							"            pm.expect(org.roles).have.property(\"length\").to.eq(1)\r",
 							"            pm.expect(org).have.property(\"email\")\r",
diff --git a/src/main/java/it/gov/pagopa/payhub/auth/service/user/IamUserInfoDTO2UserInfoMapper.java b/src/main/java/it/gov/pagopa/payhub/auth/service/user/IamUserInfoDTO2UserInfoMapper.java
index 4b9a360..21e9af5 100644
--- a/src/main/java/it/gov/pagopa/payhub/auth/service/user/IamUserInfoDTO2UserInfoMapper.java
+++ b/src/main/java/it/gov/pagopa/payhub/auth/service/user/IamUserInfoDTO2UserInfoMapper.java
@@ -1,5 +1,6 @@
 package it.gov.pagopa.payhub.auth.service.user;
 
+import io.micrometer.common.util.StringUtils;
 import it.gov.pagopa.payhub.auth.connector.client.OrganizationSearchClient;
 import it.gov.pagopa.payhub.auth.dto.IamUserInfoDTO;
 import it.gov.pagopa.payhub.auth.dto.IamUserOrganizationRolesDTO;
@@ -86,6 +87,7 @@ private UserInfo userInfoMapper(IamUserInfoDTO iamUserInfoDTO, String accessToke
                                 .organizationIpaCode(r.getOrganizationIpaCode())
                                 .roles(new ArrayList<>(r.getRoles()))
                                 .email(r.getEmail())
+                                .organizationId(retrieveOrganizationId(r.getOrganizationIpaCode(), accessToken))
                                 .build())
                         .toList())
                 .build();
@@ -98,6 +100,16 @@ private UserInfo userInfoMapper(IamUserInfoDTO iamUserInfoDTO, String accessToke
         return userInfo;
     }
 
+    private Long retrieveOrganizationId(String organizationIpaCode, String accessToken) {
+        if (StringUtils.isNotBlank(organizationIpaCode)) {
+            Organization organization = organizationSearchClient.getOrganizationByIpaCode(organizationIpaCode, accessToken);
+            if (organization != null) {
+                return organization.getOrganizationId();
+            }
+        }
+        return null;
+    }
+
     private Broker getSessionBroker(IamUserInfoDTO iamUserInfoDTO, List<UserOrganizationRoles> userOrganizations, String accessToken) {
         String orgIpaCode = Optional.ofNullable(iamUserInfoDTO.getOrganizationAccess())
                 .map(IamUserOrganizationRolesDTO::getOrganizationIpaCode)