diff --git a/healthchain/data_generators/cdsdatagenerator.py b/healthchain/data_generators/cdsdatagenerator.py
index 07ff218..b3d1340 100644
--- a/healthchain/data_generators/cdsdatagenerator.py
+++ b/healthchain/data_generators/cdsdatagenerator.py
@@ -75,6 +75,7 @@ def generate(
         constraints: Optional[list] = None,
         free_text_path: Optional[str] = None,
         column_name: Optional[str] = None,
+        random_seed: Optional[int] = None,
     ) -> BaseModel:
         """
         Generates CDS data based on the current workflow, constraints, and optional free text data.
@@ -83,6 +84,7 @@ def generate(
             constraints (Optional[list]): A list of constraints to apply to the data generation.
             free_text_path (Optional[str]): The path to a CSV file containing free text data.
             column_name (Optional[str]): The column name in the CSV file to use for free text data.
+            random_seed (Optional[int]): The random seed to use for reproducible data generation.
 
         Returns:
             BaseModel: The generated CDS FHIR data.
@@ -95,7 +97,9 @@ def generate(
         for resource in self.mappings[self.workflow]:
             generator_name = resource["generator"]
             generator = self.fetch_generator(generator_name)
-            result = generator.generate(constraints=constraints)
+            result = generator.generate(
+                constraints=constraints, random_seed=random_seed
+            )
 
             results.append(BundleEntry(resource=result))
 
diff --git a/healthchain/data_generators/conditiongenerators.py b/healthchain/data_generators/conditiongenerators.py
index cef3fa8..924c367 100644
--- a/healthchain/data_generators/conditiongenerators.py
+++ b/healthchain/data_generators/conditiongenerators.py
@@ -147,7 +147,9 @@ def generate(
         subject_reference: Optional[str] = None,
         encounter_reference: Optional[str] = None,
         constraints: Optional[list] = None,
+        random_seed: Optional[int] = None,
     ):
+        Faker.seed(random_seed)
         subject_reference = subject_reference or "Patient/123"
         encounter_reference = encounter_reference or "Encounter/123"
         code = generator_registry.get("SnomedCodeGenerator").generate(
diff --git a/healthchain/data_generators/encountergenerators.py b/healthchain/data_generators/encountergenerators.py
index 1f1b3e4..c9c6681 100644
--- a/healthchain/data_generators/encountergenerators.py
+++ b/healthchain/data_generators/encountergenerators.py
@@ -143,14 +143,16 @@ class EncounterGenerator(BaseGenerator):
     A generator class for creating FHIR Encounter resources.
 
     Methods:
-        generate(constraints: Optional[list] = None) -> Encounter:
-            Generates a FHIR Encounter resource with optional constraints.
+        generate(constraints: Optional[list] = None, random_seed: Optional[int] = None) -> Encounter:
+            Generates a FHIR Encounter resource with optional constraints and random_seed.
     """
 
     @staticmethod
     def generate(
         constraints: Optional[list] = None,
+        random_seed: Optional[int] = None,
     ) -> Encounter:
+        Faker.seed(random_seed)
         patient_reference = "Patient/123"
         return Encounter(
             resourceType="Encounter",
diff --git a/healthchain/data_generators/medicationrequestgenerators.py b/healthchain/data_generators/medicationrequestgenerators.py
index 979efca..3b1f2ab 100644
--- a/healthchain/data_generators/medicationrequestgenerators.py
+++ b/healthchain/data_generators/medicationrequestgenerators.py
@@ -46,7 +46,9 @@ class MedicationRequestGenerator(BaseGenerator):
     @staticmethod
     def generate(
         constraints: Optional[list] = None,
+        random_seed: Optional[int] = None,
     ):
+        Faker.seed(random_seed)
         subject_reference = "Patient/123"
         encounter_reference = "Encounter/123"
         contained_medication = Medication(
diff --git a/healthchain/data_generators/patientgenerators.py b/healthchain/data_generators/patientgenerators.py
index a09ba30..7076ed3 100644
--- a/healthchain/data_generators/patientgenerators.py
+++ b/healthchain/data_generators/patientgenerators.py
@@ -116,7 +116,11 @@ def generate():
 @register_generator
 class PatientGenerator(BaseGenerator):
     @staticmethod
-    def generate(constraints: Optional[list] = None):
+    def generate(
+        constraints: Optional[list] = None,
+        random_seed: Optional[int] = None,
+    ) -> Patient:
+        Faker.seed(random_seed)
         return Patient(
             resourceType="Patient",
             id=generator_registry.get("IdGenerator").generate(),
diff --git a/healthchain/data_generators/proceduregenerators.py b/healthchain/data_generators/proceduregenerators.py
index eb51ef6..d2a4426 100644
--- a/healthchain/data_generators/proceduregenerators.py
+++ b/healthchain/data_generators/proceduregenerators.py
@@ -42,7 +42,9 @@ def generate(
         subject_reference: Optional[str] = None,
         encounter_reference: Optional[str] = None,
         constraints: Optional[list] = None,
+        random_seed: Optional[int] = None,
     ):
+        Faker.seed(random_seed)
         subject_reference = subject_reference or "Patient/123"
         encounter_reference = encounter_reference or "Encounter/123"
         code = generator_registry.get("ProcedureSnomedCodeGenerator").generate(