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Contact Us


STWI Global Headquarters
580 N. 54th St., Suite 1
Chandler, AZ 85226 USA

Toll Free:   (855) 878-STWI (7894)
Fax Number(855) 878-7894

Headquarters Hours vary depending on workshop schedule- Please Submit Contact Form 

Administrative Office hours are variable Monday-Friday. Closed on weekends and holidays. 

Please note our Administrative staff hours are variable. If you do not get a response from your first choice below within 2-3 business days please submit a contact form or contact one of the other admin's listed below for assistance.  Quickest reply time: Email or contact form submission. 

Daniela (Dani) Sierra

STWI Administrative Assistant - USA

(855) 878-7894 - Main line

Contact Daniela for:

  • General Institute and workshop questions
  • U.S. & International Strap Orders (Currently Certified Practitioners Only)
  • Certificate Copies & Merchandise Orders (Currently Certified Practitioners Only)
  • Online Re-Certification Expiration Date Updates

Kristen Ernst
STWI Communications Consultant - USA

(855) 878-7894 - Extension 700

Contact Kristen for:

  • U.S. Level 1 Coursework / Requirements
  • Re-certification Questions (all Levels, U.S. & Canada)
  • Technical, Website, or Video Questions & Issues

Marlene Riggs
STWI Administrative Consultant - USA
(855) 878-7894 - Extension 2

Contact Marlene for:

  • U.S. Level 2, Level 3 & Sports Specific Questions
  • U.S. Billing & Payments
  • To report professional and/or ethical violations 


Lisa Wong
STWI Administrative Consultant - Canada
(800) 777-9288

Contact Lisa for:

  • All Canada Level 1 & Level 2 workshop questions
  • Canada Workshops Billing & Payments
  • Canada Strap & Certificate Orders

To send us an email, fill out the form below with your full name, email, phone number and a detailed message so we can assist you to the best of our ability. Turn around time is 2-3 Business days. 

Please be sure to check our FAQ page your question may be answered there:

Where We Teach:

Level 1:  Chandler, Arizona, U.S.A - Toronto & Calgary, Canada
Level 2:  Chandler, Arizona and Toronto, Ontario
Level 3: Chandler, Arizona

We do not travel for workshops - we only teach in the locations listed above unless otherwise noted on our calendar. Thank you!

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