diff --git a/package-lock.json b/package-lock.json
index 643962e7..fc87ca79 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -39,6 +39,7 @@
         "@types/cookie-parser": "^1.4.3",
         "@types/cors": "^2.8.12",
         "@types/express": "^4.17.14",
+        "@types/lodash": "^4.17.7",
         "@types/mocha": "^10.0.0",
         "@types/morgan": "^1.9.3",
         "@types/node": "^18.11.9",
@@ -3234,9 +3235,9 @@
       }
     },
     "node_modules/@types/lodash": {
-      "version": "4.14.191",
-      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.191.tgz",
-      "integrity": "sha512-BdZ5BCCvho3EIXw6wUCXHe7rS53AIDPLE+JzwgT+OsJk53oBfbSmZZ7CX4VaRoN78N+TJpFi9QPlfIVNmJYWxQ==",
+      "version": "4.17.7",
+      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.17.7.tgz",
+      "integrity": "sha512-8wTvZawATi/lsmNu10/j2hk1KEP0IvjubqPE3cu1Xz7xfXXt5oCq3SNUz4fMIP4XGF9Ky+Ue2tBA3hcS7LSBlA==",
       "dev": true
     },
     "node_modules/@types/mime": {
@@ -15984,9 +15985,9 @@
       }
     },
     "@types/lodash": {
-      "version": "4.14.191",
-      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.191.tgz",
-      "integrity": "sha512-BdZ5BCCvho3EIXw6wUCXHe7rS53AIDPLE+JzwgT+OsJk53oBfbSmZZ7CX4VaRoN78N+TJpFi9QPlfIVNmJYWxQ==",
+      "version": "4.17.7",
+      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.17.7.tgz",
+      "integrity": "sha512-8wTvZawATi/lsmNu10/j2hk1KEP0IvjubqPE3cu1Xz7xfXXt5oCq3SNUz4fMIP4XGF9Ky+Ue2tBA3hcS7LSBlA==",
       "dev": true
     },
     "@types/mime": {
diff --git a/package.json b/package.json
index 865204ee..1338e255 100644
--- a/package.json
+++ b/package.json
@@ -28,6 +28,7 @@
     "@types/cookie-parser": "^1.4.3",
     "@types/cors": "^2.8.12",
     "@types/express": "^4.17.14",
+    "@types/lodash": "^4.17.7",
     "@types/mocha": "^10.0.0",
     "@types/morgan": "^1.9.3",
     "@types/node": "^18.11.9",
diff --git a/src/domains/__tests__/items.spec.ts b/src/domains/__tests__/items.spec.ts
index c8ac8622..178e00b1 100644
--- a/src/domains/__tests__/items.spec.ts
+++ b/src/domains/__tests__/items.spec.ts
@@ -22,7 +22,7 @@ describe("granuleToStac", () => {
         type: "Feature",
         id: baseGranule.title,
         stac_version: "1.0.0",
-        stac_extensions: [],
+        stac_extensions: ["https://stac-extensions.github.io/cmr/v0.0.0/schema.json"],
         geometry: {
           type: "Polygon",
           coordinates: [
@@ -37,6 +37,9 @@ describe("granuleToStac", () => {
         },
         bbox: [-26.1081458, 29.8680955, -11.4859874, 40.0118589],
         properties: {
+          "cmr:collection_id": "C123456789-TEST_PROV",
+          "cmr:concept_id": "G000000000-TEST_PROV",
+          "cmr:provider": "TEST_PROV",
           datetime: "2009-09-14T00:00:00.000Z",
           start_datetime: "2009-09-14T00:00:00.000Z",
           end_datetime: "2010-09-14T00:00:00.000Z",
@@ -110,7 +113,7 @@ describe("granuleToStac", () => {
         type: "Feature",
         id: baseGranule.title,
         stac_version: "1.0.0",
-        stac_extensions: [],
+        stac_extensions: ["https://stac-extensions.github.io/cmr/v0.0.0/schema.json"],
         geometry: {
           type: "Polygon",
           coordinates: [
@@ -125,6 +128,9 @@ describe("granuleToStac", () => {
         },
         bbox: [-180, -60, 170, 50],
         properties: {
+          "cmr:collection_id": "C123456789-TEST_PROV",
+          "cmr:concept_id": "G000000000-TEST_PROV",
+          "cmr:provider": "TEST_PROV",
           datetime: "2009-09-14T00:00:00.000Z",
           start_datetime: "2009-09-14T00:00:00.000Z",
           end_datetime: "2010-09-14T00:00:00.000Z",
@@ -197,7 +203,7 @@ describe("granuleToStac", () => {
         type: "Feature",
         id: baseGranule.title,
         stac_version: "1.0.0",
-        stac_extensions: [],
+        stac_extensions: ["https://stac-extensions.github.io/cmr/v0.0.0/schema.json"],
         geometry: {
           type: "LineString",
           coordinates: [
@@ -208,6 +214,9 @@ describe("granuleToStac", () => {
         },
         bbox: [-42.915595, 60.477742, 11.618598, 65.941741],
         properties: {
+          "cmr:collection_id": "C123456789-TEST_PROV",
+          "cmr:concept_id": "G000000000-TEST_PROV",
+          "cmr:provider": "TEST_PROV",
           datetime: "2009-09-14T00:00:00.000Z",
           start_datetime: "2009-09-14T00:00:00.000Z",
           end_datetime: "2010-09-14T00:00:00.000Z",
diff --git a/src/domains/items.ts b/src/domains/items.ts
index 4132ba6b..7fd00214 100644
--- a/src/domains/items.ts
+++ b/src/domains/items.ts
@@ -71,6 +71,20 @@ const cloudCoverExtension = (granule: Granule) => {
   };
 };
 
+/**
+ * Return the CMR extension schema and properties for a granule.
+ */
+const cmrGranuleExtension = (granule: Granule) => {
+  return {
+    extension: "https://stac-extensions.github.io/cmr/v0.0.0/schema.json",
+    properties: {
+      "cmr:provider": granule.collection?.conceptId.split("-")[1],
+      "cmr:collection_id": granule.collection?.conceptId,
+      "cmr:concept_id": granule.conceptId,
+    },
+  };
+};
+
 /**
  * Returns the self-links for a STACItem.
  *
@@ -166,6 +180,7 @@ export const granuleToStac = (granule: Granule): STACItem => {
 
   const { extensions, properties: extensionProperties } = deriveExtensions(granule, [
     cloudCoverExtension,
+    cmrGranuleExtension,
   ]);
 
   const properties: { [key: string]: string } = mergeMaybe(