diff --git a/src/main/java/seedu/address/model/person/Nric.java b/src/main/java/seedu/address/model/person/Nric.java
index 8955f6ae73f..79a3460b5e8 100644
--- a/src/main/java/seedu/address/model/person/Nric.java
+++ b/src/main/java/seedu/address/model/person/Nric.java
@@ -18,7 +18,7 @@ public class Nric {
      * The first character of the address must not be a whitespace,
      * otherwise " " (a blank string) becomes a valid input.
      */
-    public static final String VALIDATION_REGEX = "^[ST]\\\\d{7}[A-Z]$";
+    public static final String VALIDATION_REGEX = "^[ST]\\d{7}[A-Z]$";
 
     private final String nric;
 
diff --git a/src/main/java/seedu/address/storage/JsonAdaptedPerson.java b/src/main/java/seedu/address/storage/JsonAdaptedPerson.java
index ef9390436a2..524854bfd2a 100644
--- a/src/main/java/seedu/address/storage/JsonAdaptedPerson.java
+++ b/src/main/java/seedu/address/storage/JsonAdaptedPerson.java
@@ -55,8 +55,7 @@ public JsonAdaptedPerson(@JsonProperty("nric") String nric, @JsonProperty("name"
                              @JsonProperty("status") String status, @JsonProperty("email") String email,
                              @JsonProperty("country") String country, @JsonProperty("allergies") String allergies,
                              @JsonProperty("bloodType") String bloodType, @JsonProperty("condition") String condition,
-                             @JsonProperty("dateOfAdmission") String doa,
-                             @JsonProperty("diagnosis") String diagnosis,
+                             @JsonProperty("dateOfAdmission") String doa, @JsonProperty("diagnosis") String diagnosis,
                              @JsonProperty("symptom") String symptom) {
         this.nric = nric;
         this.name = name;
@@ -84,7 +83,7 @@ public JsonAdaptedPerson(Person source) {
         this.phone = source.getPhone().toString();
         this.address = source.getAddress().toString();
         this.dateOfBirth = source.getDateOfBirth().toString();
-        this.sex = source.getEmail().toString();
+        this.sex = source.getSex().toString();
         this.status = source.getStatus().toString();
         this.email = Optional.ofNullable(source.getEmail().toString());
         this.country = Optional.ofNullable(source.getCountry().toString());
@@ -139,11 +138,11 @@ public Person toModelType() throws IllegalValueException {
         final Address modelAddress = new Address(address);
         // Date of Birth Check
         if (dateOfBirth == null) {
-            throw new IllegalValueException(
-                    String.format(MISSING_FIELD_MESSAGE_FORMAT, DateOfBirth.class.getSimpleName()));
+            throw new IllegalValueException(String.format(MISSING_FIELD_MESSAGE_FORMAT,
+                    DateOfBirth.class.getSimpleName()));
         }
         if (!DateOfBirth.isValidDateOfBirth(dateOfBirth)) {
-            throw new IllegalValueException(Phone.MESSAGE_CONSTRAINTS);
+            throw new IllegalValueException(DateOfBirth.MESSAGE_CONSTRAINTS);
         }
         final DateOfBirth modelDateOfBirth = new DateOfBirth(dateOfBirth);
         // Sex Check
diff --git a/src/test/java/seedu/address/storage/JsonAdaptedPersonTest.java b/src/test/java/seedu/address/storage/JsonAdaptedPersonTest.java
index 2525c9d88a1..3803c387f61 100644
--- a/src/test/java/seedu/address/storage/JsonAdaptedPersonTest.java
+++ b/src/test/java/seedu/address/storage/JsonAdaptedPersonTest.java
@@ -65,7 +65,7 @@ public void toModelType_nullNric_throwsIllegalValueException() {
                         VALID_ADDRESS, VALID_DOB, VALID_SEX, VALID_STATUS, VALID_EMAIL, VALID_COUNTRY,
                         VALID_ALLERGIES, VALID_BLOODTYPE, VALID_CONDITION, VALID_DOA, VALID_DIAGNOSIS,
                         VALID_SYMPTOM);
-        String expectedMessage = String.format(MISSING_FIELD_MESSAGE_FORMAT, Name.class.getSimpleName());
+        String expectedMessage = String.format(MISSING_FIELD_MESSAGE_FORMAT, Nric.class.getSimpleName());
         assertThrows(IllegalValueException.class, expectedMessage, person::toModelType);
     }
     @Test
diff --git a/src/test/java/seedu/address/testutil/TypicalPersons.java b/src/test/java/seedu/address/testutil/TypicalPersons.java
index 0fe7b5b0273..00bdcd69b95 100644
--- a/src/test/java/seedu/address/testutil/TypicalPersons.java
+++ b/src/test/java/seedu/address/testutil/TypicalPersons.java
@@ -37,21 +37,21 @@ public class TypicalPersons {
             .withName("Daniel Meier").withPhone("87652533")
             .withAddress("10th street").withSex("M").withStatus("HEALTHY").build();
     public static final Person ELLE = new PersonBuilder().withNric("S8913957B")
-            .withName("Elle Meyer").withPhone("9482224")
+            .withName("Elle Meyer").withPhone("94821224")
             .withAddress("michegan ave").withSex("F").withStatus("UNWELL").build();
     public static final Person FIONA = new PersonBuilder().withNric("T0536171Z")
-            .withName("Fiona Kunz").withPhone("9482427")
+            .withName("Fiona Kunz").withPhone("94820427")
             .withAddress("little tokyo").withSex("F").withStatus("PENDING").build();
     public static final Person GEORGE = new PersonBuilder().withNric("T0829102Z")
-            .withName("George Best").withPhone("9482442")
+            .withName("George Best").withPhone("94824421")
             .withAddress("4th street").withSex("M").withStatus("HEALTHY").build();
 
     // Manually added
     public static final Person HOON = new PersonBuilder().withNric("T0123071C").withName("Hoon Meier")
-            .withPhone("8482424").withAddress("little india")
+            .withPhone("81482424").withAddress("little india")
             .withSex("M").withStatus("HEALTHY").build();
     public static final Person IDA = new PersonBuilder().withNric("T0239521A").withName("Ida Mueller")
-            .withPhone("8482131").withAddress("chicago ave")
+            .withPhone("84820131").withAddress("chicago ave")
             .withSex("F").withStatus("PENDING").build();
 
     // Manually added - Person's details found in {@code CommandTestUtil}