diff --git a/frontend/src/app/(dashboard)/patients/page.tsx b/frontend/src/app/(dashboard)/patients/page.tsx
index 4095d41..aa85f3d 100644
--- a/frontend/src/app/(dashboard)/patients/page.tsx
+++ b/frontend/src/app/(dashboard)/patients/page.tsx
@@ -2,8 +2,11 @@
 
 import { useEffect, useMemo, useState } from 'react';
 import { Button } from '@/components/ui/common/Button';
+import { ToastStack } from '@/components/ui/common/Toast';
 import { patientsApi } from '@/lib/api/patients';
+import { formatApiErrorMessage } from '@/lib/formatApiError';
 import { useAuth } from '@/lib/hooks/useAuth';
+import { useToast } from '@/lib/hooks/useToast';
 import { hasPermission } from '@/shared/permissions';
 import {
   CreatePatientInput,
@@ -25,6 +28,7 @@ const EMPTY_PATIENT_FORM: CreatePatientInput = {
 
 export default function PatientsPage() {
   const { currentOrganization } = useAuth();
+  const toast = useToast();
   const [search, setSearch] = useState('');
   const [patients, setPatients] = useState<Patient[]>([]);
   const [selectedPatient, setSelectedPatient] = useState<Patient | undefined>();
@@ -35,8 +39,6 @@ export default function PatientsPage() {
   const [savingPatient, setSavingPatient] = useState(false);
   const [savingTreatment, setSavingTreatment] = useState(false);
   const [patientForm, setPatientForm] = useState<CreatePatientInput>(EMPTY_PATIENT_FORM);
-  const [errorMessage, setErrorMessage] = useState<string>('');
-  const [successMessage, setSuccessMessage] = useState<string>('');
   const canEditPatients = hasPermission(currentOrganization, 'TAB_PATIENTS_EDIT');
 
   const sortedPatients = useMemo(
@@ -58,21 +60,9 @@ export default function PatientsPage() {
     void loadPatients('');
   }, []);
 
-  useEffect(() => {
-    if (!successMessage) {
-      return;
-    }
-
-    const timeout = setTimeout(() => {
-      setSuccessMessage('');
-    }, 3000);
-
-    return () => clearTimeout(timeout);
-  }, [successMessage]);
-
   async function loadPatients(q: string) {
     setLoadingPatients(true);
-    setErrorMessage('');
+    toast.setError('');
     try {
       const response = await patientsApi.list({ q, page: 1, limit: 25 });
       const items = response.data.items;
@@ -82,9 +72,8 @@ export default function PatientsPage() {
         const freshSelected = items.find((item) => item.id === selectedPatient.id);
         setSelectedPatient(freshSelected);
       }
-    } catch (error: any) {
-      const message = Array.isArray(error?.message) ? error.message.join(', ') : error?.message;
-      setErrorMessage(message || 'Failed to load patients.');
+    } catch (error: unknown) {
+      toast.showError(formatApiErrorMessage(error, 'Failed to load patients.'));
     } finally {
       setLoadingPatients(false);
     }
@@ -92,13 +81,12 @@ export default function PatientsPage() {
 
   async function loadTreatments(patientId: string) {
     setLoadingTreatments(true);
-    setErrorMessage('');
+    toast.setError('');
     try {
       const response = await patientsApi.listTreatments(patientId);
       setTreatments(response.data);
-    } catch (error: any) {
-      const message = Array.isArray(error?.message) ? error.message.join(', ') : error?.message;
-      setErrorMessage(message || 'Failed to load treatment history.');
+    } catch (error: unknown) {
+      toast.showError(formatApiErrorMessage(error, 'Failed to load treatment history.'));
     } finally {
       setLoadingTreatments(false);
     }
@@ -106,8 +94,7 @@ export default function PatientsPage() {
 
   async function handleCreatePatient() {
     setSavingPatient(true);
-    setErrorMessage('');
-    setSuccessMessage('');
+    toast.setError('');
     try {
       const response = await patientsApi.create(patientForm);
       setIsCreateOpen(false);
@@ -115,12 +102,11 @@ export default function PatientsPage() {
       await loadPatients(search);
       setSelectedPatient(response.data);
       await loadTreatments(response.data.id);
-      setSuccessMessage(
+      toast.showSuccess(
         `Patient ${response.data.firstName} ${response.data.lastName} was saved successfully.`,
       );
-    } catch (error: any) {
-      const message = Array.isArray(error?.message) ? error.message.join(', ') : error?.message;
-      setErrorMessage(message || 'Failed to save patient.');
+    } catch (error: unknown) {
+      toast.showError(formatApiErrorMessage(error, 'Failed to save patient.'));
     } finally {
       setSavingPatient(false);
     }
@@ -139,29 +125,28 @@ export default function PatientsPage() {
     };
 
     setSavingTreatment(true);
-    setErrorMessage('');
-    setSuccessMessage('');
+    toast.setError('');
     try {
       await patientsApi.addTreatment(selectedPatient.id, payload);
       await loadTreatments(selectedPatient.id);
-      setSuccessMessage('Treatment entry added successfully.');
-    } catch (error: any) {
-      const message = Array.isArray(error?.message) ? error.message.join(', ') : error?.message;
-      setErrorMessage(message || 'Failed to add treatment entry.');
+      toast.showSuccess('Treatment entry added successfully.');
+    } catch (error: unknown) {
+      toast.showError(formatApiErrorMessage(error, 'Failed to add treatment entry.'));
     } finally {
       setSavingTreatment(false);
     }
   }
 
   return (
-    <div className="relative space-y-6 pb-20">
-      <div className="flex items-center justify-between">
+    <div className="space-y-6">
+      <div className="flex items-center justify-between gap-3">
         <h1 className="text-2xl font-semibold text-text-primary">Patients</h1>
         <Button
           variant="primary"
           disabled={!canEditPatients}
           onClick={() => {
             if (!canEditPatients) return;
+            toast.clear();
             setIsCreateOpen(true);
           }}
           title={!canEditPatients ? 'Read-only access for this organization.' : undefined}
@@ -170,14 +155,18 @@ export default function PatientsPage() {
         </Button>
       </div>
 
-      <CreatePatientModal
-        isOpen={isCreateOpen}
-        formData={patientForm}
-        onChange={(patch) => setPatientForm((prev) => ({ ...prev, ...patch }))}
-        onSubmit={handleCreatePatient}
-        onClose={() => setIsCreateOpen(false)}
-        loading={savingPatient}
-      />
+      <ToastStack {...toast.messages} />
+
+      {isCreateOpen && (
+        <CreatePatientModal
+          isOpen={isCreateOpen}
+          formData={patientForm}
+          onChange={(patch) => setPatientForm((prev) => ({ ...prev, ...patch }))}
+          onSubmit={() => void handleCreatePatient()}
+          onClose={() => setIsCreateOpen(false)}
+          loading={savingPatient}
+        />
+      )}
 
       <div className="grid grid-cols-1 xl:grid-cols-3 gap-6">
         <div className="xl:col-span-1">
@@ -213,21 +202,6 @@ export default function PatientsPage() {
           <TreatmentHistoryPreview items={treatments} loading={loadingTreatments} />
         </div>
       </div>
-
-      {(errorMessage || successMessage) && (
-        <div className="absolute bottom-0 left-0 right-0 z-10 w-full">
-          {errorMessage && (
-            <div className="rounded-[var(--radius-sm)] border border-red-500/50 bg-red-500/10 px-3 py-2 text-sm text-red-300 shadow-lg">
-              {errorMessage}
-            </div>
-          )}
-          {successMessage && (
-            <div className="rounded-[var(--radius-sm)] border border-emerald-500/50 bg-emerald-500/10 px-3 py-2 text-sm text-emerald-300 shadow-lg">
-              {successMessage}
-            </div>
-          )}
-        </div>
-      )}
     </div>
   );
 }