diff --git a/functions/src/notifications/membershipStatusNotifications.ts b/functions/src/notifications/membershipStatusNotifications.ts
index 7dd0541..8d25206 100644
--- a/functions/src/notifications/membershipStatusNotifications.ts
+++ b/functions/src/notifications/membershipStatusNotifications.ts
@@ -406,14 +406,12 @@ async function getTrainerName(trainerId: string): Promise<string> {
       .collection("trainer_profiles")
       .doc(trainerId)
       .get();
-    
     if (!doc.exists) {
       const userDoc = await app
         .firestore()
         .collection("users")
         .doc(trainerId)
         .get();
-      
       if (userDoc.exists) {
         const userData = userDoc.data();
         return userData?.name || userData?.displayName || "Unknown Trainer";
@@ -428,7 +426,6 @@ async function getTrainerName(trainerId: string): Promise<string> {
       const lastName = fields["last-name"] || "";
       return `${firstName} ${lastName}`.trim() || "Unknown Trainer";
     }
-    
     return data?.name || data?.displayName || "Unknown Trainer";
   } catch (error) {
     logger.error(`Error getting trainer name for ${trainerId}:`, error);
@@ -447,9 +444,9 @@ async function processExpiredMembership(
     });
 
     logger.info(`Marked membership ${membershipId} as EXPIRED`);
-    
+
     await sendPlanExpiredNotification(membershipId, membershipData);
-    
+
     await sendTrainerNotifications(membershipId, membershipData, "expired");
   } catch (error) {
     logger.error(`Error processing membership ${membershipId}:`, error);
@@ -462,9 +459,9 @@ async function processExpiringMembership(
 ): Promise<void> {
   try {
     logger.info(`Processing expiring membership ${membershipId}`);
-    
+
     await sendPlanExpiringNotification(membershipId, membershipData);
-    
+
     await sendTrainerNotifications(membershipId, membershipData, "expiring");
   } catch (error) {
     logger.error(
@@ -474,16 +471,44 @@ async function processExpiringMembership(
   }
 }
 
+async function getTrainerUserId(trainerId: string): Promise<string> {
+  try {
+    const trainerDoc = await app
+      .firestore()
+      .collection("trainer_profiles")
+      .doc(trainerId)
+      .get();
+
+    if (!trainerDoc.exists) {
+      throw new Error(`Trainer profile not found for ID: ${trainerId}`);
+    }
+
+    const trainerData = trainerDoc.data();
+    if (!trainerData?.userId) {
+      throw new Error(`userId not found in trainer profile: ${trainerId}`);
+    }
+
+    return trainerData.userId;
+  } catch (error) {
+    logger.error(`Error getting userId for trainer ${trainerId}:`, error);
+    return trainerId;
+  }
+}
+
 async function sendTrainerNotifications(
   membershipId: string,
   membershipData: MembershipData,
   notificationType: "expired" | "expiring"
 ): Promise<void> {
   try {
-    const trainerAssignments = await getTrainerAssignmentsForMembership(membershipId);
-    
+    const trainerAssignments = await getTrainerAssignmentsForMembership(
+      membershipId
+    );
+
     if (trainerAssignments.length === 0) {
-      logger.info(`No trainer assignments found for membership ${membershipId}`);
+      logger.info(
+        `No trainer assignments found for membership ${membershipId}`
+      );
       return;
     }
 
@@ -519,13 +544,17 @@ async function sendTrainerNotifications(
 
       try {
         const trainerName = await getTrainerName(assignment.trainerId);
-        
-        const notifType = notificationType === "expired" ? "trainer_client_plan_expired" : "trainer_client_plan_expiring";
+        const trainerUserId = await getTrainerUserId(assignment.trainerId);
+
+        const notifType =
+          notificationType === "expired"
+            ? "trainer_client_plan_expired"
+            : "trainer_client_plan_expiring";
         const existing = await app
           .firestore()
           .collection("notifications")
           .where("type", "==", notifType)
-          .where("recipientId", "==", assignment.trainerId)
+          .where("recipientId", "==", trainerUserId)
           .where("data.membershipId", "==", membershipId)
           .where(
             "data.expiryDate",
@@ -546,7 +575,7 @@ async function sendTrainerNotifications(
 
         const notificationData: any = {
           senderId: "system",
-          recipientId: assignment.trainerId,
+          recipientId: trainerUserId,
           type: notifType,
           notificationSent: false,
           timestamp: admin.firestore.FieldValue.serverTimestamp(),
@@ -799,4 +828,4 @@ async function getGymName(gymId: string): Promise<string> {
     logger.error(`Error getting gym name for gym ${gymId}:`, error);
     return "Unknown Gym";
   }
-}
\ No newline at end of file
+}