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PSTC Mailing Address


P.O. Box 5508
Redwood City, CA 94063

PSTC Street Address

3 Lagoon Drive Suite 170 Redwood City, CA 94065

Toll Free: 1-800-348-8911 Phone: (650) 591-7911 Fax: 650-591-8911 Email:


Open today

7:00 am – 4:30 pm

If you call after hours, extensions +102, +105 and +109 can be dialed to leave a message.