diff --git a/src/ehrdata/tl/__init__.py b/src/ehrdata/tl/__init__.py
index 21e17a8..0e899b3 100644
--- a/src/ehrdata/tl/__init__.py
+++ b/src/ehrdata/tl/__init__.py
@@ -1,2 +1,3 @@
 from .basic import basic_tool
+from .lamin import EHRCurator
 from .omop import get_concept_name
diff --git a/src/ehrdata/tl/lamin.py b/src/ehrdata/tl/lamin.py
new file mode 100644
index 0000000..5ab99ef
--- /dev/null
+++ b/src/ehrdata/tl/lamin.py
@@ -0,0 +1,111 @@
+from __future__ import annotations
+
+from typing import TYPE_CHECKING, Any
+
+import anndata as ad
+import omop as op
+from lamindb.core import AnnDataCurator
+from lamindb_setup.core.types import UPathStr
+from lnschema_core import Record
+from lnschema_core.types import FieldAttr
+
+if TYPE_CHECKING:
+    from ehrdata import EHRData
+
+from .lamin_config import DEFAULTS_VALUES
+
+# TODO: Specify Lamin instance for validation in lamin_config.py
+
+
+class EHRCurator(AnnDataCurator):
+    """Custom curation flow for electronic health record data.
+
+    This class handles the validation and preparation of electronic health record
+    (EHR) data, ensuring that required columns are present and that data types
+    are correct. It also validates concept IDs for consistency.
+
+    Args:
+        adata (ehrdata.EHRData | UPathStr): The AnnData object or path to the data
+            containing the electronic health record information.
+        categoricals (dict[str, FieldAttr], optional): A dictionary defining categorical
+            fields and their attributes. Defaults to None.
+        defaults (list[str], optional): A list of required columns that should be
+            present in the data. Defaults to None.
+        sources (dict[str, Record], optional): A dictionary specifying the sources
+            of records. Defaults to None.
+        organism (str, optional): The organism related to the dataset. Defaults to "human".
+        concepts_var_column (str, optional): The column in `var` that contains measurement
+            concept IDs to be validated. Defaults to "measurement_concept_id".
+    """
+
+    def __init__(
+        self,
+        edata: EHRData | UPathStr,
+        categoricals: dict[str, FieldAttr] = None,
+        *,
+        defaults: dict[str, Any] = DEFAULTS_VALUES,
+        sources: dict[str, Record] = None,
+        organism: str = "human",
+        concepts_var_column: str = "measurement_concept_id",
+    ):
+        """Initializes the EHRCurator with the provided parameters.
+
+        This method sets up the EHRData object and relevant configurations for
+        the curation process. It also calls the parent class's initializer.
+
+        Args:
+            edata (ehrdata.EHRData | UPathStr): The EHRData object or path containing the EHR data.
+            categoricals (dict[str, FieldAttr], optional): Dictionary of categorical fields and their attributes.
+            defaults (list[str], optional): List of required columns to validate in the `obs` data.
+            sources (dict[str, Record], optional): Dictionary of sources for records.
+            organism (str, optional): Organism related to the data. Defaults to "human".
+            concepts_var_column (str, optional): Column in the `var` DataFrame containing measurement concept IDs.
+        """
+        self.edata = edata
+        self.adata = ad.AnnData(X=edata.X, obs=edata.obs, var=edata.var)
+        self.organism = organism
+        self.defaults = defaults
+        self.concepts_var_column = concepts_var_column
+
+        super().__init__(data=self.adata, var_index=None, categoricals=categoricals, sources=sources, organism=organism)
+
+    def _validate_obs(self):
+        """Validate that required columns exist and have the correct types.
+
+        This method checks the `obs` DataFrame to ensure that each column in `defaults`
+        exists and that its values match the expected data type.
+
+        Raises
+        ------
+            ValueError: If a required column is missing from the `obs` DataFrame.
+            TypeError: If a column's data type does not match the expected type.
+        """
+        for column, expected_type in self.defaults.items():
+            # Check if the column exists in the obs DataFrame
+            if column not in self.adata.obs.columns:
+                raise ValueError(f"Required column '{column}' is missing from the DataFrame.")
+
+            # Check if the column's values have the expected data type using list comprehension
+            if not all(isinstance(x, expected_type) for x in self.adata.obs[column]):
+                raise TypeError(f"Column '{column}' has incorrect data type. Expected {expected_type.__name__}.")
+
+    def validate_adata(self, op_instance) -> bool:
+        """Run the validation process on the AnnData object.
+
+        This method first validates the `obs` DataFrame, ensuring that all required
+        columns and data types are correct. It then validates the measurement concept
+        IDs in the `var` DataFrame, adding a new column `valid_concept_id` to indicate
+        valid concept IDs.
+
+        Returns
+        -------
+            bool: True if validation passes, False otherwise.
+        """
+        # First run custom validations
+        self._validate_obs()
+
+        # Validate concept IDs
+        self.adata.var["valid_concept_id"] = op.Concept.validate(
+            self.adata.var[self.concepts_var_column].values, field=op_instance.Concept.concept_id, mute=True
+        )
+        return EHRData(adata=self.adata)
diff --git a/src/ehrdata/tl/lamin_config.py b/src/ehrdata/tl/lamin_config.py
new file mode 100644
index 0000000..cf01c97
--- /dev/null
+++ b/src/ehrdata/tl/lamin_config.py
@@ -0,0 +1,7 @@
+DEFAULTS_VALUES = {
+    "person_id": int,
+    "gender_concept_id": int,
+    "year_of_birth": int,
+    "race_concept_id": int,
+    "ethnicity_concept_id": int,
+}