diff --git a/manifests/cheaha_users.pp b/manifests/cheaha_users.pp
index 602f6fd96c5f773870aa8f1e618920040f91a915..e90b97855281c1fe4c1a90c67563e6cdd114f71a 100644
--- a/manifests/cheaha_users.pp
+++ b/manifests/cheaha_users.pp
@@ -483,6 +483,7 @@ class users::cheaha_users inherits users::virtual_users
     User["mkwojc"],
     User["mms1973"],
     User["mmullane"],
+    User["mnapiera"],
     User["mpogwizd"],
     User["mrlarson"],
     User["msaatch-iastate"],
diff --git a/manifests/virtual_groups.pp b/manifests/virtual_groups.pp
index dcf640fd22417ca2c2e964f7d47d80e7e9c49ea1..3293b3fe777e0b990d07f98ccde20f7ad56c0a95 100644
--- a/manifests/virtual_groups.pp
+++ b/manifests/virtual_groups.pp
@@ -2327,5 +2327,9 @@ class users::virtual_groups
     gid     => "10630",
     ensure  => "present",
   }
+  @group { "mnapiera":
+    gid     => "10631",
+    ensure  => "present",
+  }
 
 }
diff --git a/manifests/virtual_users.pp b/manifests/virtual_users.pp
index 40545f2e28ce09a997fd1870c9869148a5f3c664..5ff85fe90a99dcfdfa1c0e7a634d99e39c29419e 100644
--- a/manifests/virtual_users.pp
+++ b/manifests/virtual_users.pp
@@ -6138,5 +6138,13 @@ class users::virtual_users
     comment    => "Tom Callens, tcallens@uab.edu, MEDGENOMICS, Ludwine Messiaen (lmessiaen@uab.edu)",
     managehome => true,
   }
+  # 20141111 - Added new cheaha user mnapiera - https://trac.uabgrid.uab.edu/atlab/ticket/853
+  @user { "mnapiera":
+    ensure     => "present",
+    uid        => "10631",
+    gid        => "medgenomics",
+    comment    => "Marek Napierala, mnapiera@uab.edu, MEDGENOMICS, Ludwine Messiaen (lmessiaen@uab.edu)",
+    managehome => true,
+  }
 
 }