diff --git a/homeassistant/components/medcom_ble/__init__.py b/homeassistant/components/medcom_ble/__init__.py
index 5c508688b54..60f945f5adb 100644
--- a/homeassistant/components/medcom_ble/__init__.py
+++ b/homeassistant/components/medcom_ble/__init__.py
@@ -3,19 +3,17 @@
 from __future__ import annotations
 
 from homeassistant.components import bluetooth
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryNotReady
 
-from .const import DOMAIN
-from .coordinator import MedcomBleUpdateCoordinator
+from .coordinator import MedcomBleConfigEntry, MedcomBleUpdateCoordinator
 
 # Supported platforms
 PLATFORMS: list[Platform] = [Platform.SENSOR]
 
 
-async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+async def async_setup_entry(hass: HomeAssistant, entry: MedcomBleConfigEntry) -> bool:
     """Set up Medcom BLE radiation monitor from a config entry."""
 
     address = entry.unique_id
@@ -31,16 +29,13 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
 
     await coordinator.async_config_entry_first_refresh()
 
-    hass.data.setdefault(DOMAIN, {})[entry.entry_id] = coordinator
+    entry.runtime_data = coordinator
 
     await hass.config_entries.async_forward_entry_setups(entry, PLATFORMS)
 
     return True
 
 
-async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+async def async_unload_entry(hass: HomeAssistant, entry: MedcomBleConfigEntry) -> bool:
     """Unload a config entry."""
-    if unload_ok := await hass.config_entries.async_unload_platforms(entry, PLATFORMS):
-        hass.data[DOMAIN].pop(entry.entry_id)
-
-    return unload_ok
+    return await hass.config_entries.async_unload_platforms(entry, PLATFORMS)
diff --git a/homeassistant/components/medcom_ble/coordinator.py b/homeassistant/components/medcom_ble/coordinator.py
index 2b326c4196d..eb7f91f3477 100644
--- a/homeassistant/components/medcom_ble/coordinator.py
+++ b/homeassistant/components/medcom_ble/coordinator.py
@@ -18,13 +18,17 @@ from .const import DEFAULT_SCAN_INTERVAL, DOMAIN
 
 _LOGGER = logging.getLogger(__name__)
 
+type MedcomBleConfigEntry = ConfigEntry[MedcomBleUpdateCoordinator]
+
 
 class MedcomBleUpdateCoordinator(DataUpdateCoordinator[MedcomBleDevice]):
     """Coordinator for Medcom BLE radiation monitor data."""
 
-    config_entry: ConfigEntry
+    config_entry: MedcomBleConfigEntry
 
-    def __init__(self, hass: HomeAssistant, entry: ConfigEntry, address: str) -> None:
+    def __init__(
+        self, hass: HomeAssistant, entry: MedcomBleConfigEntry, address: str
+    ) -> None:
         """Initialize the coordinator."""
         super().__init__(
             hass,
diff --git a/homeassistant/components/medcom_ble/sensor.py b/homeassistant/components/medcom_ble/sensor.py
index cf78b5dc41a..6ca59c07908 100644
--- a/homeassistant/components/medcom_ble/sensor.py
+++ b/homeassistant/components/medcom_ble/sensor.py
@@ -4,7 +4,6 @@ from __future__ import annotations
 
 import logging
 
-from homeassistant import config_entries
 from homeassistant.components.sensor import (
     SensorEntity,
     SensorEntityDescription,
@@ -15,8 +14,8 @@ from homeassistant.helpers.device_registry import CONNECTION_BLUETOOTH, DeviceIn
 from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
 from homeassistant.helpers.update_coordinator import CoordinatorEntity
 
-from .const import DOMAIN, UNIT_CPM
-from .coordinator import MedcomBleUpdateCoordinator
+from .const import UNIT_CPM
+from .coordinator import MedcomBleConfigEntry, MedcomBleUpdateCoordinator
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -32,12 +31,12 @@ SENSORS_MAPPING_TEMPLATE: dict[str, SensorEntityDescription] = {
 
 async def async_setup_entry(
     hass: HomeAssistant,
-    entry: config_entries.ConfigEntry,
+    entry: MedcomBleConfigEntry,
     async_add_entities: AddConfigEntryEntitiesCallback,
 ) -> None:
     """Set up Medcom BLE radiation monitor sensors."""
 
-    coordinator: MedcomBleUpdateCoordinator = hass.data[DOMAIN][entry.entry_id]
+    coordinator = entry.runtime_data
 
     entities = []
     _LOGGER.debug("got sensors: %s", coordinator.data.sensors)