diff --git a/healthcare/fhir/createFhirResource.js b/healthcare/fhir/createFhirResource.js
index 1457b1079f..92a796f672 100644
--- a/healthcare/fhir/createFhirResource.js
+++ b/healthcare/fhir/createFhirResource.js
@@ -30,6 +30,7 @@ function main(
       scopes: ['https://www.googleapis.com/auth/cloud-platform'],
     }),
     headers: {'Content-Type': 'application/fhir+json'},
+    responseType: 'json',
   });
 
   async function createFhirResource() {
diff --git a/healthcare/fhir/deleteFhirResource.js b/healthcare/fhir/deleteFhirResource.js
index 49a432aab2..52016b5df8 100644
--- a/healthcare/fhir/deleteFhirResource.js
+++ b/healthcare/fhir/deleteFhirResource.js
@@ -29,6 +29,7 @@ const main = (
     auth: new google.auth.GoogleAuth({
       scopes: ['https://www.googleapis.com/auth/cloud-platform'],
     }),
+    responseType: 'json',
   });
 
   const deleteFhirResource = async () => {
@@ -46,10 +47,14 @@ const main = (
     // fails, the server returns a 200 OK HTTP status code. To check that the
     // resource was successfully deleted, search for or get the resource and
     // see if it exists.
-    await healthcare.projects.locations.datasets.fhirStores.fhir.delete(
-      request
-    );
-    console.log('Deleted FHIR resource');
+    try {
+      await healthcare.projects.locations.datasets.fhirStores.fhir.delete(
+        request
+      );
+      console.log(`Deleted FHIR resource: ${resourceId}`);
+    } catch (error) {
+      console.error('Error deleting FHIR resource:', error.message || error);
+    }
   };
 
   deleteFhirResource();
diff --git a/healthcare/fhir/deleteFhirResourcePurge.js b/healthcare/fhir/deleteFhirResourcePurge.js
index 16601b4f8b..cf1023aacb 100644
--- a/healthcare/fhir/deleteFhirResourcePurge.js
+++ b/healthcare/fhir/deleteFhirResourcePurge.js
@@ -29,6 +29,7 @@ const main = (
     auth: new google.auth.GoogleAuth({
       scopes: ['https://www.googleapis.com/auth/cloud-platform'],
     }),
+    responseType: 'json',
   });
 
   const deleteFhirResourcePurge = async () => {
@@ -42,10 +43,14 @@ const main = (
     const name = `projects/${projectId}/locations/${cloudRegion}/datasets/${datasetId}/fhirStores/${fhirStoreId}/fhir/${resourceType}/${resourceId}`;
     const request = {name};
 
-    await healthcare.projects.locations.datasets.fhirStores.fhir.ResourcePurge(
-      request
-    );
-    console.log('Deleted all historical versions of resource');
+    try {
+      await healthcare.projects.locations.datasets.fhirStores.fhir.ResourcePurge(
+        request
+      );
+      console.log(`Purged all historical versions of resource: ${resourceId}`);
+    } catch (error) {
+      console.error('Error purging FHIR resource:', error.message || error);
+    }
   };
 
   deleteFhirResourcePurge();
diff --git a/healthcare/fhir/exportFhirResources.js b/healthcare/fhir/exportFhirResources.js
index 1d538096f6..ded96655da 100644
--- a/healthcare/fhir/exportFhirResources.js
+++ b/healthcare/fhir/exportFhirResources.js
@@ -28,6 +28,7 @@ const main = (
     auth: new google.auth.GoogleAuth({
       scopes: ['https://www.googleapis.com/auth/cloud-platform'],
     }),
+    responseType: 'json',
   });
   const sleep = ms => {
     return new Promise(resolve => setTimeout(resolve, ms));
@@ -51,23 +52,33 @@ const main = (
       },
     };
 
-    const operation =
-      await healthcare.projects.locations.datasets.fhirStores.export(request);
-    const operationName = operation.data.name;
+    try {
+      const operation =
+        await healthcare.projects.locations.datasets.fhirStores.export(request);
+      const operationName = operation.data.name;
 
-    // Wait ten seconds for the LRO to finish
-    await sleep(10000);
+      let done = false;
+      let operationStatus;
 
-    // Check the LRO's status
-    const operationStatus =
-      await healthcare.projects.locations.datasets.operations.get({
-        name: operationName,
-      });
+      while (!done) {
+        console.log('Waiting for operation to complete...');
+        await sleep(5000);
 
-    if (typeof operationStatus.data.metadata.counter !== 'undefined') {
-      console.log('Exported FHIR resources successfully');
-    } else {
-      console.log('Export failed');
+        operationStatus =
+          await healthcare.projects.locations.datasets.operations.get({
+            name: operationName,
+          });
+
+        done = operationStatus.data.done;
+      }
+
+      if (operationStatus.data.error) {
+        console.log('Export failed with error:', operationStatus.data.error);
+      } else {
+        console.log('Exported FHIR resources successfully');
+      }
+    } catch (error) {
+      console.error('Error exporting FHIR resources:', error.message || error);
     }
   };
 
diff --git a/healthcare/fhir/getFhirResourceHistory.js b/healthcare/fhir/getFhirResourceHistory.js
index 8dd56d6997..8a16badaf3 100644
--- a/healthcare/fhir/getFhirResourceHistory.js
+++ b/healthcare/fhir/getFhirResourceHistory.js
@@ -30,6 +30,7 @@ const main = (
     auth: new google.auth.GoogleAuth({
       scopes: ['https://www.googleapis.com/auth/cloud-platform'],
     }),
+    responseType: 'json',
   });
 
   const getFhirResourceHistory = async () => {
diff --git a/healthcare/fhir/getFhirStoreIamPolicy.js b/healthcare/fhir/getFhirStoreIamPolicy.js
index e31be8c2fc..27058590bc 100644
--- a/healthcare/fhir/getFhirStoreIamPolicy.js
+++ b/healthcare/fhir/getFhirStoreIamPolicy.js
@@ -27,6 +27,7 @@ const main = (
     auth: new google.auth.GoogleAuth({
       scopes: ['https://www.googleapis.com/auth/cloud-platform'],
     }),
+    responseType: 'json',
   });
 
   const getFhirStoreIamPolicy = async () => {
@@ -38,14 +39,21 @@ const main = (
     const resource_ = `projects/${projectId}/locations/${cloudRegion}/datasets/${datasetId}/fhirStores/${fhirStoreId}`;
     const request = {resource_};
 
-    const fhirStore =
-      await healthcare.projects.locations.datasets.fhirStores.getIamPolicy(
-        request
+    try {
+      const fhirStore =
+        await healthcare.projects.locations.datasets.fhirStores.getIamPolicy(
+          request
+        );
+      console.log(
+        'Got FHIR store IAM policy:',
+        JSON.stringify(fhirStore.data, null, 2)
       );
-    console.log(
-      'Got FHIR store IAM policy:',
-      JSON.stringify(fhirStore.data, null, 2)
-    );
+    } catch (error) {
+      console.error(
+        'Error getting FHIR store IAM policy:',
+        error.message || error
+      );
+    }
   };
 
   getFhirStoreIamPolicy();
diff --git a/healthcare/fhir/listFhirResourceHistory.js b/healthcare/fhir/listFhirResourceHistory.js
index acee5552e0..a4a207b740 100644
--- a/healthcare/fhir/listFhirResourceHistory.js
+++ b/healthcare/fhir/listFhirResourceHistory.js
@@ -29,6 +29,7 @@ const main = (
     auth: new google.auth.GoogleAuth({
       scopes: ['https://www.googleapis.com/auth/cloud-platform'],
     }),
+    responseType: 'json',
   });
 
   const listFhirResourceHistory = async () => {
diff --git a/healthcare/fhir/package.json b/healthcare/fhir/package.json
index abb74033ed..683d4bec14 100644
--- a/healthcare/fhir/package.json
+++ b/healthcare/fhir/package.json
@@ -9,7 +9,7 @@
     "node": ">=12.0.0"
   },
   "scripts": {
-    "test": "c8 mocha -p -j 2 system-test/*.test.js --timeout=60000"
+    "test": "c8 mocha system-test/*.test.js --timeout=60000"
   },
   "devDependencies": {
     "@google-cloud/pubsub": "^4.0.0",
diff --git a/healthcare/fhir/patchFhirStore.js b/healthcare/fhir/patchFhirStore.js
index c432731f8c..4b99a2267d 100644
--- a/healthcare/fhir/patchFhirStore.js
+++ b/healthcare/fhir/patchFhirStore.js
@@ -28,6 +28,7 @@ const main = (
     auth: new google.auth.GoogleAuth({
       scopes: ['https://www.googleapis.com/auth/cloud-platform'],
     }),
+    responseType: 'json',
   });
 
   const patchFhirStore = async () => {
@@ -50,10 +51,16 @@ const main = (
       },
     };
 
-    await healthcare.projects.locations.datasets.fhirStores.patch(request);
-    console.log(
-      `Patched FHIR store ${fhirStoreId} with Cloud Pub/Sub topic ${pubsubTopic}`
-    );
+    try {
+      const response =
+        await healthcare.projects.locations.datasets.fhirStores.patch(request);
+      console.log(
+        `Patched FHIR store ${fhirStoreId} with Cloud Pub/Sub topic ${pubsubTopic}`
+      );
+      console.log(JSON.stringify(response.data, null, 2));
+    } catch (error) {
+      console.error('Error patching FHIR store:', error.message || error);
+    }
   };
 
   patchFhirStore();
diff --git a/healthcare/fhir/searchFhirResourcesPost.js b/healthcare/fhir/searchFhirResourcesPost.js
index e7756d457f..2d6caa22bf 100644
--- a/healthcare/fhir/searchFhirResourcesPost.js
+++ b/healthcare/fhir/searchFhirResourcesPost.js
@@ -28,8 +28,6 @@ const main = (
   const searchFhirResourcesPost = async () => {
     const auth = new GoogleAuth({
       scopes: 'https://www.googleapis.com/auth/cloud-platform',
-      // Set application/fhir+json header because this is a POST request.
-      headers: {'Content-Type': 'application/fhir+json'},
     });
     // TODO(developer): uncomment these lines before running the sample
     // const cloudRegion = 'us-central1';
@@ -44,11 +42,27 @@ const main = (
     // Patient with the last name "Smith", set resourceType to "Patient" and
     // specify the following params:
     // params = {'family:exact' : 'Smith'};
-    const client = await auth.getClient();
-    const response = await client.request({url, method: 'POST', params});
-    const resources = response.data.entry;
-    console.log(`Resources found: ${resources.length}`);
-    console.log(JSON.stringify(resources, null, 2));
+
+    try {
+      const client = await auth.getClient();
+      const response = await client.request({
+        url,
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/fhir+json',
+        },
+        params,
+        responseType: 'json',
+      });
+      const resources = response.data.entry || [];
+      console.log('Resources found: ' + resources.length);
+      console.log(JSON.stringify(resources, null, 2));
+    } catch (error) {
+      console.error(
+        `Error searching ${resourceType} resources:`,
+        error.response ? error.response.data : error.message
+      );
+    }
   };
 
   searchFhirResourcesPost();
diff --git a/healthcare/fhir/setFhirStoreIamPolicy.js b/healthcare/fhir/setFhirStoreIamPolicy.js
index 3290f05db4..f750968f53 100644
--- a/healthcare/fhir/setFhirStoreIamPolicy.js
+++ b/healthcare/fhir/setFhirStoreIamPolicy.js
@@ -46,7 +46,7 @@ const main = (
         policy: {
           bindings: [
             {
-              members: member,
+              members: [member],
               role: role,
             },
           ],
diff --git a/healthcare/fhir/system-test/fhir_resources.test.js b/healthcare/fhir/system-test/fhir_resources.test.js
index 61c09595fa..a793663af6 100644
--- a/healthcare/fhir/system-test/fhir_resources.test.js
+++ b/healthcare/fhir/system-test/fhir_resources.test.js
@@ -163,7 +163,9 @@ it('should purge all historical versions of a FHIR resource', () => {
     {cwd}
   );
   assert.strictEqual(
-    new RegExp('Deleted all historical versions of resource').test(output),
+    new RegExp(
+      `Purged all historical versions of resource: ${resourceId}`
+    ).test(output),
     true
   );
 });
@@ -181,7 +183,10 @@ it('should delete a FHIR resource', () => {
     `node deleteFhirResource.js ${projectId} ${cloudRegion} ${datasetId} ${fhirStoreId} ${resourceType} ${resourceId}`,
     {cwd}
   );
-  assert.strictEqual(new RegExp('Deleted FHIR resource').test(output), true);
+  assert.strictEqual(
+    new RegExp(`Deleted FHIR resource: ${resourceId}`).test(output),
+    true
+  );
 
   // Clean up
   execSync(