- On this day, September 10, 2021 may it be known thatWilliam TierneyCertification Number: CSL-0744has successfully met all requirements to be named aCertified Internal Family Systems™ Practitionerin accordance with the standards set by the IFS Institute.Renewal Date: September 30, 2027
William Tierney
An IFS™ Certified Practitioner demonstrates the practitioner's commitment to meeting the standards of consultation, clinical practice, and ongoing education required for providing IFS therapy. An IFS Certified Practitioner is dedicated to upholding ethical standards and staying engaged in continuing education. To learn more about requirements to earn this credential, please see more about this certification path on our website IFS™ Certification Policy | IFS Institute
To see a list of current IFS Certified Practitioners, you can always refer to our directory IFS Directory | IFS Institute
Skills / Knowledge
- Mental Health
- IFS Model
Issued on
September 10, 2021
Expires on
September 30, 2027