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Upcoming holiday closures 

Quest Patient Service Centers will be closed on Friday, July 3 and Saturday, July 4, 2026, in observance of Independence Day, and to give our frontline team the time to recharge. Don't let the holiday interrupt your care. Plan your visit today.

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Quest Diagnostics Nichols Institute of Valencia, Inc.
8407 Fallbrook Avenue, West Hills, CA 91304

LicensesExpiresLicense/Permit #
CAP
(CAP Letter Included)
04-30-262277101
CLIA04-27-2705D0550302
California01-22-27CDF-00002586
MarylandNon-Expiring437
New York06-30-26PFI: 3197
Pennsylvania08-15-2622376A
Rhode Island12-30-26LCO00461