diff --git a/aiogram/api.py b/aiogram/api.py
index 8eb4648d..a1303773 100644
--- a/aiogram/api.py
+++ b/aiogram/api.py
@@ -108,9 +108,9 @@ class ApiMethods:
     UNBAN_CHAT_MEMBER = 'unbanChatMember'
     LEAVE_CHAT = 'leaveChat'
     GET_CHAT = 'getChat'
-    GET_CHAT_ADMINISTRATORS = 'getChatAdministrators'  # TODO
-    GET_CHAT_MEMBERS_COUNT = 'getChatMembersCount'  # TODO
-    GET_CHAT_MEMBER = 'getChatMember'  # TODO
+    GET_CHAT_ADMINISTRATORS = 'getChatAdministrators'
+    GET_CHAT_MEMBERS_COUNT = 'getChatMembersCount'
+    GET_CHAT_MEMBER = 'getChatMember'
     ANSWER_CALLBACK_QUERY = 'answerCallbackQuery'  # TODO
     EDIT_MESSAGE_TEXT = 'editMessageText'  # TODO
     EDIT_MESSAGE_CAPTION = 'editMessageCaption'  # TODO
diff --git a/aiogram/bot.py b/aiogram/bot.py
index f47e06bd..d03cf16c 100644
--- a/aiogram/bot.py
+++ b/aiogram/bot.py
@@ -310,3 +310,12 @@ class AIOGramBot:
         payload = generate_payload(**locals())
         raw = await self.request(ApiMethods.GET_CHAT_ADMINISTRATORS, payload)
         return [self.prepare_object(ChatMember.de_json(raw_chat_member)) for raw_chat_member in raw]
+
+    async def get_chat_members_count(self, chat_id):
+        payload = generate_payload(**locals())
+        return await self.request(ApiMethods.GET_CHAT_MEMBERS_COUNT, payload)
+
+    async def get_chat_member(self, chat_id, user_id):
+        payload = generate_payload(**locals())
+        raw = await self.request(ApiMethods.GET_CHAT_MEMBER, payload)
+        return self.prepare_object(ChatMember.de_json(raw))