diff --git a/modules/medianetBidAdapter.js b/modules/medianetBidAdapter.js
index cc00f7c1ea4..8236fb0888c 100644
--- a/modules/medianetBidAdapter.js
+++ b/modules/medianetBidAdapter.js
@@ -2,6 +2,7 @@ import { registerBidder } from '../src/adapters/bidderFactory';
 import * as utils from '../src/utils';
 import { config } from '../src/config';
 import * as url from '../src/url';
+import { BANNER, NATIVE } from '../src/mediaTypes';
 
 const BIDDER_CODE = 'medianet';
 const BID_URL = '//prebid.media.net/rtb/prebid';
@@ -138,9 +139,18 @@ function slotParams(bidRequest) {
       dfp_id: bidRequest.adUnitCode,
       display_count: bidRequest.bidRequestsCount
     },
-    banner: transformSizes(bidRequest.sizes),
     all: bidRequest.params
   };
+  if (bidRequest.sizes.length > 0) {
+    params.banner = transformSizes(bidRequest.sizes);
+  }
+  if (bidRequest.nativeParams) {
+    try {
+      params.native = JSON.stringify(bidRequest.nativeParams);
+    } catch (e) {
+      utils.logError((`${BIDDER_CODE} : Incorrect JSON : bidRequest.nativeParams`));
+    }
+  }
 
   if (bidRequest.params.crid) {
     params.tagid = bidRequest.params.crid.toString();
@@ -151,7 +161,7 @@ function slotParams(bidRequest) {
     params.bidfloor = bidFloor;
   }
   const coordinates = getCoordinates(bidRequest.adUnitCode);
-  if (coordinates) {
+  if (coordinates && params.banner && params.banner.length !== 0) {
     let normCoordinates = normalizeCoordinates(coordinates);
     params.ext.coordinates = normCoordinates;
     params.ext.viewability = getSlotVisibility(coordinates.top_left, getMinSize(params.banner));
@@ -268,6 +278,8 @@ export const spec = {
 
   code: BIDDER_CODE,
 
+  supportedMediaTypes: [BANNER, NATIVE],
+
   /**
    * Determines whether or not the given bid request is valid.
    *
diff --git a/modules/medianetBidAdapter.md b/modules/medianetBidAdapter.md
index 2edb120033e..a29ee056a88 100644
--- a/modules/medianetBidAdapter.md
+++ b/modules/medianetBidAdapter.md
@@ -30,7 +30,7 @@ var adUnits = [{
 }];
 ```
 
-# Ad Unit and Setup: For Testing
+# Ad Unit and Setup: For Testing (Banner)
 
 ```html
  <!-- Prebid Config section -->
@@ -56,4 +56,46 @@ var adUnits = [{
     pbjs.que = pbjs.que || [];
 </script>
 <!-- End Prebid Config section -->
-```
\ No newline at end of file
+```
+
+
+# Ad Unit and Setup: For Testing (Native)
+
+```html
+ <!-- Prebid Config section -->
+ <script>
+    var PREBID_TIMEOUT = 2000;
+    var adUnits = [
+        {
+            code: 'div-gpt-ad-1544091247692-0',
+            mediaTypes: {
+                native: {
+                    image: {
+                        required: true,
+                        sizes: [300, 250],
+                        wmin: 50,
+                    },
+                    title: {
+                        required: true,
+                        len: 80
+                    }
+                }
+            },
+            bids: [
+                {
+                    bidder: 'medianet',
+                    params: {
+                        cid: '8CUX0H51C',
+                        // Site member is to be used only for testing
+                        site: {
+                            page: 'http://smoketesting.net/prebidtest/',
+                            domain: 'smoketesting.net',
+                            ref: 'http://smoketesting.net/prebidtest/'
+                        }
+                    }
+                }
+            ]
+        }
+    ];        
+</script>
+<!-- End Prebid Config section -->
diff --git a/test/spec/modules/medianetBidAdapter_spec.js b/test/spec/modules/medianetBidAdapter_spec.js
index 331b36b3217..336a86a7793 100644
--- a/test/spec/modules/medianetBidAdapter_spec.js
+++ b/test/spec/modules/medianetBidAdapter_spec.js
@@ -73,6 +73,101 @@ let VALID_BID_REQUEST = [{
     'auctionId': 'aafabfd0-28c0-4ac0-aa09-99689e88b81d',
     'bidRequestsCount': 1
   }],
+  VALID_NATIVE_BID_REQUEST = [{
+    'bidder': 'medianet',
+    'params': {
+      'cid': 'customer_id',
+      'site': {
+        'page': 'http://media.net/prebidtest',
+        'domain': 'media.net',
+        'ref': 'http://media.net/prebidtest'
+      }
+    },
+    'adUnitCode': 'div-gpt-ad-1460505748561-0',
+    'transactionId': '277b631f-92f5-4844-8b19-ea13c095d3f1',
+    'sizes': [[300, 250]],
+    'bidId': '28f8f8130a583e',
+    'bidderRequestId': '1e9b1f07797c1c',
+    'auctionId': 'aafabfd0-28c0-4ac0-aa09-99689e88b81d',
+    'bidRequestsCount': 1,
+    'nativeParams': {
+      'image': {
+        'required': true,
+        'sizes': [
+          150,
+          50
+        ],
+        'wmin': 50
+      },
+      'title': {
+        'required': true,
+        'len': 80
+      },
+      'sponsoredBy': {
+        'required': true
+      },
+      'clickUrl': {
+        'required': true
+      },
+      'body': {
+        'required': true
+      },
+      'icon': {
+        'required': true,
+        'sizes': [
+          50,
+          50
+        ]
+      }
+    }
+  }, {
+    'bidder': 'medianet',
+    'params': {
+      'cid': 'customer_id',
+      'site': {
+        'page': 'http://media.net/prebidtest',
+        'domain': 'media.net',
+        'ref': 'http://media.net/prebidtest'
+      }
+    },
+    'adUnitCode': 'div-gpt-ad-1460505748561-123',
+    'transactionId': 'c52a5c62-3c2b-4b90-9ff8-ec1487754822',
+    'sizes': [[300, 251]],
+    'bidId': '3f97ca71b1e5c2',
+    'bidderRequestId': '1e9b1f07797c1c',
+    'auctionId': 'aafabfd0-28c0-4ac0-aa09-99689e88b81d',
+    'bidRequestsCount': 1,
+    'nativeParams': {
+      'image': {
+        'required': true,
+        'sizes': [
+          150,
+          50
+        ],
+        'wmin': 50
+      },
+      'title': {
+        'required': true,
+        'len': 80
+      },
+      'sponsoredBy': {
+        'required': true
+      },
+      'clickUrl': {
+        'required': true
+      },
+      'body': {
+        'required': true
+      },
+      'icon': {
+        'required': true,
+        'sizes': [
+          50,
+          50
+        ]
+      }
+    }
+  }],
   VALID_AUCTIONDATA = {
     'timeout': config.getConfig('bidderTimeout'),
   },
@@ -156,6 +251,87 @@ let VALID_BID_REQUEST = [{
     }],
     'tmax': config.getConfig('bidderTimeout')
   },
+  VALID_PAYLOAD_NATIVE = {
+    'site': {
+      'page': 'http://media.net/prebidtest',
+      'domain': 'media.net',
+      'ref': 'http://media.net/prebidtest'
+    },
+    'ext': {
+      'customer_id': 'customer_id',
+      'prebid_version': $$PREBID_GLOBAL$$.version,
+      'gdpr_applies': false,
+      'screen': {
+        'w': 1000,
+        'h': 1000
+      }
+    },
+    'id': 'aafabfd0-28c0-4ac0-aa09-99689e88b81d',
+    'imp': [{
+      'id': '28f8f8130a583e',
+      'ext': {
+        'dfp_id': 'div-gpt-ad-1460505748561-0',
+        'visibility': 1,
+        'viewability': 1,
+        'coordinates': {
+          'top_left': {
+            x: 50,
+            y: 50
+          },
+          'bottom_right': {
+            x: 100,
+            y: 100
+          }
+        },
+        'display_count': 1
+      },
+      'banner': [{
+        'w': 300,
+        'h': 250
+      }],
+      'native': '{\"image\":{\"required\":true,\"sizes\":[150,50],\"wmin\":50},\"title\":{\"required\":true,\"len\":80},\"sponsoredBy\":{\"required\":true},\"clickUrl\":{\"required\":true},\"body\":{\"required\":true},\"icon\":{\"required\":true,\"sizes\":[50,50]}}',
+      'all': {
+        'cid': 'customer_id',
+        'site': {
+          'page': 'http://media.net/prebidtest',
+          'domain': 'media.net',
+          'ref': 'http://media.net/prebidtest'
+        }
+      }
+    }, {
+      'id': '3f97ca71b1e5c2',
+      'ext': {
+        'dfp_id': 'div-gpt-ad-1460505748561-123',
+        'visibility': 1,
+        'viewability': 1,
+        'coordinates': {
+          'top_left': {
+            x: 50,
+            y: 50
+          },
+          'bottom_right': {
+            x: 100,
+            y: 100
+          }
+        },
+        'display_count': 1
+      },
+      'banner': [{
+        'w': 300,
+        'h': 251
+      }],
+      'native': '{\"image\":{\"required\":true,\"sizes\":[150,50],\"wmin\":50},\"title\":{\"required\":true,\"len\":80},\"sponsoredBy\":{\"required\":true},\"clickUrl\":{\"required\":true},\"body\":{\"required\":true},\"icon\":{\"required\":true,\"sizes\":[50,50]}}',
+      'all': {
+        'cid': 'customer_id',
+        'site': {
+          'page': 'http://media.net/prebidtest',
+          'domain': 'media.net',
+          'ref': 'http://media.net/prebidtest'
+        }
+      }
+    }],
+    'tmax': config.getConfig('bidderTimeout')
+  },
   VALID_PAYLOAD = {
     'site': {
       'page': 'http://media.net/prebidtest',
@@ -562,6 +738,11 @@ describe('Media.net bid adapter', function () {
       expect(JSON.parse(bidReq.data)).to.deep.equal(VALID_PAYLOAD_FOR_GDPR);
     });
 
+    it('should parse params for native request', function () {
+      let bidReq = spec.buildRequests(VALID_NATIVE_BID_REQUEST, VALID_AUCTIONDATA);
+      expect(JSON.parse(bidReq.data)).to.deep.equal(VALID_PAYLOAD_NATIVE);
+    });
+
     describe('build requests: when page meta-data is available', () => {
       beforeEach(() => {
         spec.clearMnData();