About Us

“We are Clinical hypnotherapists, united in the application of safe and effective healing methods to achieve profound, rapid and permanent change to our communities in need.”

Angela Simmerman Sierra, CMS-CHT 

Angela’s vision of the future inspired her to create the Foundation to advance hypnotherapy.

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Angela is a Director at the Hypnotherapy Academy of America campus in Albuquerque, NM. She is recognized for her effective ability to work with Mental Imagery and is the creator of Mental Healing Imagery Methodology that is used internationally with excellent and permanent results.

Angela is an instructor of hypnotherapy, and practical skills coach at the Academy as well as a Certified NeuroLinguistic Programming Instructor, a graduate of Robert Dilts’ NLP University.  She studied Mental Imagery with Jose Joaquin Dulcey Torres, Neurosurgeon and Mental Imagery expert as well as Gerald Epstein, MD, author of the book Healing visualizations and the program “Creating Health with Mental Imagery”.

As a bilingual Clinical Hypnotherapist, Imagery Methodology Creator and Neuro-Linguistic Instructor she works with English and Spanish communities.

In 2008, Angela became a director at the Hypnotherapy Academy of America, where, together with her husband, Tim Simmerman Sierra, she leads one of the most prestigious training in Hypnotherapy in the United States and the world.

Angela believes in the power of hypnotherapy since it was the only healing method used in her physical and emotional recovery after a car accident in 1998.  She healed from blindness, multiple fractures in her skull, emotional anguish and distress. Therefore, with a profound conviction that people deserve a second chance, she made a solemn promise to dedicate her life to serve others.

After her healing experience, Angela has witnessed many other corroborated healings, which have taken place with hypnotherapy alone or in conjunction with western medicine.  This has constituted the substantial bases for the creation of GHAF.  Angela’s intention is to enlarge the field of action in hypnotherapy bringing it to many other communities like the Veterans, Hospitals, Medical schools and Research, Public schools, etc.

With profound conviction of our innate abilities for change, Angela and her team build the dream into a reality. Read more about Angela

Tim Simmerman Sierra, PH, CMS-CHT


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Recognized internationally as an expert in Hypnotherapy, Tim is a director, and lead educator at, the Hypnotherapy Academy of America (HAA) campus in Albuquerque, New Mexico.

Tim has taught and mentored thousands of students from across the globe in the study of suggestive sciences and regression therapy methods. Tim’s mastery for distilling complex theories of the mind into practical therapeutic application helps create an exciting, engaging and stimulating learning environment that transcends expectations. HAA graduates have gone on to create healthy, happy and successful lives and careers not only for themselves but in their service to others.

Tim’s seminal textbook on hypnosis, Medical Hypnotherapy: Principles and Methods of Practice, is an effective guide, not only for professionals in the healthcare system but also for anyone who wants to use their mind to heal. A gift of Tim’s book is available for any donation of $50.00 or more. More information about Tim… 

Advisory Council

Global Hypnotherapy Advancement Foundation

  • Anthony Moon, CMS-CHt, FIBH, Albuquerque, New Mexico
  • Roseanne Becker, CMS-CHt, FIBH, Overland Park, Kansas
  • Diana Guire, PsyD, CMS-CHt-FIBH, California
  • Richard Watt, CMS-CHt, FIBH, Illinois
  • Christian Raphael, CMS-CHt, FIBH, New Mexico
  • Eli Handler, CMS-CHt, Melbourne, Florida
  • Gloria Waite, MA, MFT, CHT, Newtown, Pennsylvania
  • Margaret Griffin, CMS-CHt, FIBH, North Carolina
  • Jill Steele, CMS-CHt, FIBH, Colorado
  • Dawn Harrison-Reeve, CMS-CHt, FIBH, Perth, Australia
  • Sven-Anders Wallin, Business Consultant, Perth, Australia
  • Ravinder Sharma, British Columbia, Canada
  • Judith Acosta, LISW, CCH
  • Linda Seagraves, MSBR, CMS-CHt
  • Susan Czarnionka, RN, BSN, MBA, CHT

If you are interested in participating as a member of our Advisory Council, please email us at [email protected]

Foundation’s Structure

Employer Identification Number:  46-0532329
July 12, 2012

Tax Exempt Status:  501 (c) (3) 

– June 29, 2013

Corporations and Business Services: Business – NM Secretary of State:  ID#: 4621549

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