diff --git a/doc/source/whatsnew/v1.2.0.rst b/doc/source/whatsnew/v1.2.0.rst
index 0067632b3b460..7ba64f57be136 100644
--- a/doc/source/whatsnew/v1.2.0.rst
+++ b/doc/source/whatsnew/v1.2.0.rst
@@ -325,6 +325,7 @@ I/O
 - :meth:`to_picke` and :meth:`read_pickle` did not support compression for file-objects (:issue:`26237`, :issue:`29054`, and :issue:`29570`)
 - Bug in :func:`LongTableBuilder.middle_separator` was duplicating LaTeX longtable entires in the List of Tables of a LaTeX document (:issue:`34360`)
 - Bug in :meth:`read_csv` with `engine='python'` truncating data if multiple items present in first row and first element started with BOM (:issue:`36343`)
+- Removed ``private_key`` and ``verbose`` from :func:`read_gbq` as they are no longer supported in `pandas-gbq` (:issue:`34654` :issue:`30200`)
 
 Plotting
 ^^^^^^^^
@@ -372,6 +373,7 @@ ExtensionArray
 
 Other
 ^^^^^
+
 - Bug in :meth:`DataFrame.replace` and :meth:`Series.replace` incorrectly raising ``AssertionError`` instead of ``ValueError`` when invalid parameter combinations are passed (:issue:`36045`)
 - Bug in :meth:`DataFrame.replace` and :meth:`Series.replace` with numeric values and string ``to_replace`` (:issue:`34789`)
 - Fixed metadata propagation in the :class:`Series.dt` accessor (:issue:`28283`)
diff --git a/pandas/io/gbq.py b/pandas/io/gbq.py
index 3d0792357297f..afe1234f9fa96 100644
--- a/pandas/io/gbq.py
+++ b/pandas/io/gbq.py
@@ -31,8 +31,6 @@ def read_gbq(
     credentials=None,
     use_bqstorage_api: Optional[bool] = None,
     max_results: Optional[int] = None,
-    private_key=None,
-    verbose=None,
     progress_bar_type: Optional[str] = None,
 ) -> "DataFrame":
     """
@@ -208,8 +206,6 @@ def to_gbq(
     location: Optional[str] = None,
     progress_bar: bool = True,
     credentials=None,
-    verbose=None,
-    private_key=None,
 ) -> None:
     pandas_gbq = _try_import()
     pandas_gbq.to_gbq(
@@ -224,6 +220,4 @@ def to_gbq(
         location=location,
         progress_bar=progress_bar,
         credentials=credentials,
-        verbose=verbose,
-        private_key=private_key,
     )