diff --git a/api/QCVOC.Api/Veterans/Data/DTO/VeteranEnrollRequest.cs b/api/QCVOC.Api/Veterans/Data/DTO/VeteranEnrollRequest.cs
index 02073ab7..153357e4 100644
--- a/api/QCVOC.Api/Veterans/Data/DTO/VeteranEnrollRequest.cs
+++ b/api/QCVOC.Api/Veterans/Data/DTO/VeteranEnrollRequest.cs
@@ -49,7 +49,7 @@ public class VeteranEnrollRequest
         ///     Gets or sets the primary phone number of the Veteran.
         /// </summary>
         [Required]
-        [Phone]
+        [RegularExpression(@"^[1-9][0-9]{9}$")]
         public string PrimaryPhone { get; set; }
 
         /// <summary>
diff --git a/api/QCVOC.Api/Veterans/Data/DTO/VeteranUpdateRequest.cs b/api/QCVOC.Api/Veterans/Data/DTO/VeteranUpdateRequest.cs
index 78b4ecc5..6d8254a4 100644
--- a/api/QCVOC.Api/Veterans/Data/DTO/VeteranUpdateRequest.cs
+++ b/api/QCVOC.Api/Veterans/Data/DTO/VeteranUpdateRequest.cs
@@ -49,7 +49,7 @@ public class VeteranUpdateRequest
         ///     Gets or sets the primary phone number of the Veteran.
         /// </summary>
         [Required]
-        [Phone]
+        [RegularExpression(@"^[1-9][0-9]{9}$")]
         public string PrimaryPhone { get; set; }
 
         /// <summary>
diff --git a/web/src/util.js b/web/src/util.js
index 8ee093ed..5a1b3984 100644
--- a/web/src/util.js
+++ b/web/src/util.js
@@ -50,7 +50,7 @@ export const validateEmail = (email) => {
 
 export const validatePhoneNumber = (phoneNumber) => {
     // eslint-disable-next-line
-    var re = /\(\d{3}\) \d{3}-\d{4}/;
+    var re = /^[1-9][0-9]{9}$/;
     return re.test(phoneNumber);
 }
 
diff --git a/web/src/veterans/VeteranDialog.js b/web/src/veterans/VeteranDialog.js
index a8e4403f..72f22fdd 100644
--- a/web/src/veterans/VeteranDialog.js
+++ b/web/src/veterans/VeteranDialog.js
@@ -227,7 +227,7 @@ class VeteranDialog extends Component {
             result.primaryPhone = 'The Primary Phone field is required.';
         }
         else if (!validatePhoneNumber(primaryPhone)) {
-            result.primaryPhone = 'Enter a valid phone number in the format (555) 555-5555.';
+            result.primaryPhone = 'Enter a valid phone number in the format \'555555555\'';
         }
 
         if ((email !== '' && email !== undefined) && !validateEmail(email)) {