diff --git a/src/registrar/admin.py b/src/registrar/admin.py
index cb198cb6b..b2c41c07f 100644
--- a/src/registrar/admin.py
+++ b/src/registrar/admin.py
@@ -2997,6 +2997,7 @@ class PortfolioAdmin(ListHeaderAdmin):
         "domain_requests",
         "suborganizations",
         "portfolio_type",
+        "creator",
     ]
 
     def federal_type(self, obj: models.Portfolio):
diff --git a/src/registrar/assets/js/get-gov-admin.js b/src/registrar/assets/js/get-gov-admin.js
index c05ef090c..24f020b75 100644
--- a/src/registrar/assets/js/get-gov-admin.js
+++ b/src/registrar/assets/js/get-gov-admin.js
@@ -908,10 +908,28 @@ function initializeWidgetOnList(list, parentId) {
             return;
         }
 
+        // Determine if any changes are necessary to the display of portfolio type or federal type
+        // based on changes to the Federal Agency
+        let federalPortfolioApi = document.getElementById("federal_and_portfolio_types_from_agency_json_url").value;
+        fetch(`${federalPortfolioApi}?organization_type=${organizationType.value}&agency_name=${selectedText}`)
+        .then(response => {
+            const statusCode = response.status;
+            return response.json().then(data => ({ statusCode, data }));
+        })
+        .then(({ statusCode, data }) => {
+            if (data.error) {
+                console.error("Error in AJAX call: " + data.error);
+                return;
+            }
+            updateReadOnly(data.federal_type, '.field-federal_type');
+            updateReadOnly(data.portfolio_type, '.field-portfolio_type');
+        })
+        .catch(error => console.error("Error fetching federal and portfolio types: ", error));
+
         // Hide the contactList initially. 
         // If we can update the contact information, it'll be shown again.
         hideElement(contactList.parentElement);
-
+        
         let seniorOfficialApi = document.getElementById("senior_official_from_agency_json_url").value;
         fetch(`${seniorOfficialApi}?agency_name=${selectedText}`)
         .then(response => {
@@ -954,6 +972,7 @@ function initializeWidgetOnList(list, parentId) {
             }
         })
         .catch(error => console.error("Error fetching senior official: ", error));
+
     }
 
     function handleStateTerritoryChange(stateTerritory, urbanizationField) {
@@ -965,6 +984,26 @@ function initializeWidgetOnList(list, parentId) {
         }
     }
 
+    /**
+     * Utility that selects a div from the DOM using selectorString,
+     * and updates a div within that div which has class of 'readonly'
+     * so that the text of the div is updated to updateText
+     * @param {*} updateText 
+     * @param {*} selectorString 
+     */
+    function updateReadOnly(updateText, selectorString) {
+        // find the div by selectorString
+        const selectedDiv = document.querySelector(selectorString);
+        if (selectedDiv) {
+            // find the nested div with class 'readonly' inside the selectorString div
+            const readonlyDiv = selectedDiv.querySelector('.readonly');
+            if (readonlyDiv) {
+                // Update the text content of the readonly div
+                readonlyDiv.textContent = updateText !== null ? updateText : '-';
+            }
+        }
+    }
+
     function updateContactInfo(data) {
         if (!contactList) return;
     
diff --git a/src/registrar/config/urls.py b/src/registrar/config/urls.py
index 413449896..19fa99809 100644
--- a/src/registrar/config/urls.py
+++ b/src/registrar/config/urls.py
@@ -24,7 +24,10 @@ from registrar.views.report_views import (
 
 from registrar.views.domain_request import Step
 from registrar.views.domain_requests_json import get_domain_requests_json
-from registrar.views.utility.api_views import get_senior_official_from_federal_agency_json
+from registrar.views.utility.api_views import (
+    get_senior_official_from_federal_agency_json,
+    get_federal_and_portfolio_types_from_federal_agency_json,
+)
 from registrar.views.domains_json import get_domains_json
 from registrar.views.utility import always_404
 from api.views import available, get_current_federal, get_current_full
@@ -139,6 +142,11 @@ urlpatterns = [
         get_senior_official_from_federal_agency_json,
         name="get-senior-official-from-federal-agency-json",
     ),
+    path(
+        "admin/api/get-federal-and-portfolio-types-from-federal-agency-json/",
+        get_federal_and_portfolio_types_from_federal_agency_json,
+        name="get-federal-and-portfolio-types-from-federal-agency-json",
+    ),
     path("admin/", admin.site.urls),
     path(
         "reports/export_data_type_user/",
diff --git a/src/registrar/models/portfolio.py b/src/registrar/models/portfolio.py
index 0f9904c31..fadcf8cac 100644
--- a/src/registrar/models/portfolio.py
+++ b/src/registrar/models/portfolio.py
@@ -131,9 +131,13 @@ class Portfolio(TimeStampedModel):
         Returns a combination of organization_type / federal_type, seperated by ' - '.
         If no federal_type is found, we just return the org type.
         """
-        org_type_label = self.OrganizationChoices.get_org_label(self.organization_type)
-        agency_type_label = BranchChoices.get_branch_label(self.federal_type)
-        if self.organization_type == self.OrganizationChoices.FEDERAL and agency_type_label:
+        return self.get_portfolio_type(self.organization_type, self.federal_type)
+
+    @classmethod
+    def get_portfolio_type(cls, organization_type, federal_type):
+        org_type_label = cls.OrganizationChoices.get_org_label(organization_type)
+        agency_type_label = BranchChoices.get_branch_label(federal_type)
+        if organization_type == cls.OrganizationChoices.FEDERAL and agency_type_label:
             return " - ".join([org_type_label, agency_type_label])
         else:
             return org_type_label
@@ -141,7 +145,11 @@ class Portfolio(TimeStampedModel):
     @property
     def federal_type(self):
         """Returns the federal_type value on the underlying federal_agency field"""
-        return self.federal_agency.federal_type if self.federal_agency else None
+        return self.get_federal_type(self.federal_agency)
+
+    @classmethod
+    def get_federal_type(cls, federal_agency):
+        return federal_agency.federal_type if federal_agency else None
 
     # == Getters for domains == #
     def get_domains(self):
diff --git a/src/registrar/templates/django/admin/portfolio_change_form.html b/src/registrar/templates/django/admin/portfolio_change_form.html
index 9d59aae42..4eb941340 100644
--- a/src/registrar/templates/django/admin/portfolio_change_form.html
+++ b/src/registrar/templates/django/admin/portfolio_change_form.html
@@ -5,6 +5,8 @@
     {% comment %} Stores the json endpoint in a url for easier access {% endcomment %}
     {% url 'get-senior-official-from-federal-agency-json' as url %}
     <input id="senior_official_from_agency_json_url" class="display-none" value="{{url}}" />
+    {% url 'get-federal-and-portfolio-types-from-federal-agency-json' as url %}
+    <input id="federal_and_portfolio_types_from_agency_json_url" class="display-none" value="{{url}}" />
     {{ block.super }}
 {% endblock content %}
 
diff --git a/src/registrar/tests/test_api.py b/src/registrar/tests/test_api.py
index de52ad3d6..2597e65c2 100644
--- a/src/registrar/tests/test_api.py
+++ b/src/registrar/tests/test_api.py
@@ -5,6 +5,7 @@ from django.contrib.auth import get_user_model
 from registrar.tests.common import create_superuser, create_user
 
 from api.tests.common import less_console_noise_decorator
+from registrar.utility.constants import BranchChoices
 
 
 class GetSeniorOfficialJsonTest(TestCase):
@@ -71,3 +72,40 @@ class GetSeniorOfficialJsonTest(TestCase):
         self.assertEqual(response.status_code, 404)
         data = response.json()
         self.assertEqual(data["error"], "Senior Official not found")
+
+
+class GetFederalPortfolioTypeJsonTest(TestCase):
+    def setUp(self):
+        self.client = Client()
+        p = "password"
+        self.user = get_user_model().objects.create_user(username="testuser", password=p)
+
+        self.superuser = create_superuser()
+        self.analyst_user = create_user()
+
+        self.agency = FederalAgency.objects.create(agency="Test Agency", federal_type=BranchChoices.JUDICIAL)
+
+        self.api_url = reverse("get-federal-and-portfolio-types-from-federal-agency-json")
+
+    def tearDown(self):
+        User.objects.all().delete()
+        FederalAgency.objects.all().delete()
+
+    @less_console_noise_decorator
+    def test_get_federal_and_portfolio_types_json_authenticated_superuser(self):
+        """Test that a superuser can fetch the federal and portfolio types."""
+        p = "adminpass"
+        self.client.login(username="superuser", password=p)
+        response = self.client.get(self.api_url, {"agency_name": "Test Agency", "organization_type": "federal"})
+        self.assertEqual(response.status_code, 200)
+        data = response.json()
+        self.assertEqual(data["federal_type"], "Judicial")
+        self.assertEqual(data["portfolio_type"], "Federal - Judicial")
+
+    @less_console_noise_decorator
+    def test_get_federal_and_portfolio_types_json_authenticated_regularuser(self):
+        """Test that a regular user receives a 403 with an error message."""
+        p = "password"
+        self.client.login(username="testuser", password=p)
+        response = self.client.get(self.api_url, {"agency_name": "Test Agency", "organization_type": "federal"})
+        self.assertEqual(response.status_code, 302)
diff --git a/src/registrar/views/utility/api_views.py b/src/registrar/views/utility/api_views.py
index 2c9414d1d..97eb7e86c 100644
--- a/src/registrar/views/utility/api_views.py
+++ b/src/registrar/views/utility/api_views.py
@@ -5,6 +5,9 @@ from registrar.models import FederalAgency, SeniorOfficial
 from django.contrib.admin.views.decorators import staff_member_required
 from django.contrib.auth.decorators import login_required
 
+from registrar.models.portfolio import Portfolio
+from registrar.utility.constants import BranchChoices
+
 logger = logging.getLogger(__name__)
 
 
@@ -34,3 +37,34 @@ def get_senior_official_from_federal_agency_json(request):
         return JsonResponse(so_dict)
     else:
         return JsonResponse({"error": "Senior Official not found"}, status=404)
+
+
+@login_required
+@staff_member_required
+def get_federal_and_portfolio_types_from_federal_agency_json(request):
+    """Returns specific portfolio information as a JSON. Request must have
+    both agency_name and organization_type."""
+
+    # This API is only accessible to admins and analysts
+    superuser_perm = request.user.has_perm("registrar.full_access_permission")
+    analyst_perm = request.user.has_perm("registrar.analyst_access_permission")
+    if not request.user.is_authenticated or not any([analyst_perm, superuser_perm]):
+        return JsonResponse({"error": "You do not have access to this resource"}, status=403)
+
+    federal_type = None
+    portfolio_type = None
+
+    agency_name = request.GET.get("agency_name")
+    organization_type = request.GET.get("organization_type")
+    agency = FederalAgency.objects.filter(agency=agency_name).first()
+    if agency:
+        federal_type = Portfolio.get_federal_type(agency)
+        portfolio_type = Portfolio.get_portfolio_type(organization_type, federal_type)
+        federal_type = BranchChoices.get_branch_label(federal_type) if federal_type else "-"
+
+    response_data = {
+        "portfolio_type": portfolio_type,
+        "federal_type": federal_type,
+    }
+
+    return JsonResponse(response_data)