diff --git a/hapi-fhir-jpaserver-base/src/test/java/ca/uhn/fhir/jpa/dao/dstu3/FhirResourceDaoDstu3SearchNoFtTest.java b/hapi-fhir-jpaserver-base/src/test/java/ca/uhn/fhir/jpa/dao/dstu3/FhirResourceDaoDstu3SearchNoFtTest.java
index 738d1702f9b..26c37eb07f8 100644
--- a/hapi-fhir-jpaserver-base/src/test/java/ca/uhn/fhir/jpa/dao/dstu3/FhirResourceDaoDstu3SearchNoFtTest.java
+++ b/hapi-fhir-jpaserver-base/src/test/java/ca/uhn/fhir/jpa/dao/dstu3/FhirResourceDaoDstu3SearchNoFtTest.java
@@ -5,6 +5,7 @@ import ca.uhn.fhir.jpa.model.entity.*;
 import ca.uhn.fhir.jpa.searchparam.SearchParamConstants;
 import ca.uhn.fhir.jpa.searchparam.SearchParameterMap;
 import ca.uhn.fhir.jpa.searchparam.SearchParameterMap.EverythingModeEnum;
+import ca.uhn.fhir.jpa.searchparam.registry.SearchParamRegistryImpl;
 import ca.uhn.fhir.jpa.util.TestUtil;
 import ca.uhn.fhir.model.api.Include;
 import ca.uhn.fhir.model.api.TemporalPrecisionEnum;
@@ -229,6 +230,36 @@ public class FhirResourceDaoDstu3SearchNoFtTest extends BaseJpaDstu3Test {
 
 	}
 
+	@Test
+	public void testHasChain() {
+
+		Patient p = new Patient();
+		p.setId("P");
+		p.setActive(true);
+		myPatientDao.update(p);
+
+		Group group = new Group();
+		group.setId("G");
+		group.addMember().getEntity().setReference("Patient/P");
+		myGroupDao.update(group);
+
+		DiagnosticReport dr = new DiagnosticReport();
+		dr.setId("DR");
+		dr.getSubject().setReference("Patient/P");
+		myDiagnosticReportDao.update(dr);
+
+		SearchParameterMap map = new SearchParameterMap();
+		map.setLoadSynchronous(true);
+
+		ReferenceParam referenceParam = new ReferenceParam();
+		referenceParam.setValueAsQueryToken(myFhirCtx, "subject", "._has:Group:member:_id", "Group/G");
+		map.add("subject", referenceParam);
+		List<String> actual = toUnqualifiedVersionlessIdValues(myDiagnosticReportDao.search(map));
+		assertThat(actual, containsInAnyOrder("DiagnosticReport/DR"));
+
+		// http://hapi.fhir.org/baseR4/DiagnosticReport?subject._has:Group:member:_id=52152
+	}
+
 	@SuppressWarnings("unused")
 	@Test
 	public void testHasAndHas() {
diff --git a/hapi-fhir-jpaserver-searchparam/src/main/java/ca/uhn/fhir/jpa/searchparam/ResourceMetaParams.java b/hapi-fhir-jpaserver-searchparam/src/main/java/ca/uhn/fhir/jpa/searchparam/ResourceMetaParams.java
index 698201476d0..09a14facce1 100644
--- a/hapi-fhir-jpaserver-searchparam/src/main/java/ca/uhn/fhir/jpa/searchparam/ResourceMetaParams.java
+++ b/hapi-fhir-jpaserver-searchparam/src/main/java/ca/uhn/fhir/jpa/searchparam/ResourceMetaParams.java
@@ -23,6 +23,8 @@ package ca.uhn.fhir.jpa.searchparam;
 import ca.uhn.fhir.model.api.IQueryParameterAnd;
 import ca.uhn.fhir.model.api.IQueryParameterType;
 import ca.uhn.fhir.rest.api.Constants;
+import ca.uhn.fhir.rest.param.HasAndListParam;
+import ca.uhn.fhir.rest.param.HasParam;
 import ca.uhn.fhir.rest.param.StringAndListParam;
 import ca.uhn.fhir.rest.param.StringParam;
 import ca.uhn.fhir.rest.param.TokenAndListParam;
@@ -61,6 +63,8 @@ public class ResourceMetaParams {
 		resourceMetaAndParams.put(Constants.PARAM_PROFILE, UriAndListParam.class);
 		resourceMetaParams.put(Constants.PARAM_SECURITY, TokenParam.class);
 		resourceMetaAndParams.put(Constants.PARAM_SECURITY, TokenAndListParam.class);
+		resourceMetaParams.put(Constants.PARAM_HAS, HasParam.class);
+		resourceMetaAndParams.put(Constants.PARAM_HAS, HasAndListParam.class);
 		RESOURCE_META_PARAMS = Collections.unmodifiableMap(resourceMetaParams);
 		RESOURCE_META_AND_PARAMS = Collections.unmodifiableMap(resourceMetaAndParams);
 
diff --git a/src/changes/changes.xml b/src/changes/changes.xml
index 30df7b31289..e8dd43c674f 100644
--- a/src/changes/changes.xml
+++ b/src/changes/changes.xml
@@ -37,6 +37,10 @@
 				HAPI FHIR 4.1.0 the value in Bundle.entry.fullUrl will only be used to set the parsed resource
 				ID if the resource has no ID present.
 			</action>
+			<action type="add">
+				Chained searches using the _has search parameter as the chain value are now supported by
+				the JPA server.
+			</action>
 		</release>
 		<release version="4.1.0" date="2019-11-13" description="Jitterbug">
 			<action type="add">