Exhibit 99.1350CERT


     Certification Pursuant to Section 906 of the Sarbanes Oxley Act


I, Robert C. Doll, Jr., Chief Executive Officer of MuniYield California
Insured Fund, Inc. (the "Fund"), certify that:

1. The N-CSR of the Fund (the "Report") fully complies with the
   requirements of Section 13(a) or 15(d) of the Securities Exchange Act
   of 1934; and

2. The information contained in the Report fairly presents, in all material
   respects, the financial condition and results of operations of the Fund.


Dated: June 20, 2005


                                     /s/ Robert C. Doll, Jr.
                                     -----------------------
                                     Robert C. Doll, Jr.,
                                     Chief Executive Officer of
                                     MuniYield California Insured Fund, Inc.


A signed original of this written statement required by Section 906, or
other document authenticating, acknowledging, or otherwise adopting the
signature that appears in typed form within the electronic version of this
written statement required by Section 906, has been provided to MuniYield
California Insured Fund, Inc. and will be retained by MuniYield California
Insured Fund, Inc. and furnished to the Securities and Exchange Commission
or its staff upon request.



Exhibit 99.1350CERT


     Certification Pursuant to Section 906 of the Sarbanes Oxley Act


I, Donald C. Burke, Chief Financial Officer of MuniYield California Insured
Fund, Inc. (the "Fund"), certify that:

1. The N-CSR of the Fund (the "Report") fully complies with the
   requirements of Section 13(a) or 15(d) of the Securities Exchange Act
   of 1934; and

2. The information contained in the Report fairly presents, in all material
   respects, the financial condition and results of operations of the Fund.


Dated: June 20, 2005


                                     /s/ Donald C. Burke
                                     -------------------
                                     Donald C. Burke,
                                     Chief Financial Officer of
                                     MuniYield California Insured Fund, Inc.


A signed original of this written statement required by Section 906, or
other document authenticating, acknowledging, or otherwise adopting the
signature that appears in typed form within the electronic version of this
written statement required by Section 906, has been provided to MuniYield
California Insured Fund, Inc. and will be retained by MuniYield California
Insured Fund, Inc. and furnished to the Securities and Exchange Commission
or its staff upon request.