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  • IMDHA Operations Team

    To better understand the core momentum that exists within our administration, we thought it a good idea to acquaint you with our team of professionals. Our Operations Team comes to you with a diverse background in specific areas of expertise. Each team member contributing their experience and skills to better serve the needs of our members in their own unique way. We are very proud of them and happy to have them on board. Affectionately referred to as the wind behind our sail; it is both and honor and pleasure to introduce them to you.

    Robert Otto

    Robert Otto
    President, Chief Executive Officer

    Robert received his formal training in the early 1980's from Dr. Matthew A. Sportelli, a Doctor of Chiropractic and Founder of the Institute of Dynamic Hypnosis. His literary contributions can be found in numerous professional journals, magazines and newspapers. As a pioneer in the profession, he is the first hypnotist to receive a Certificate of Special Congressional Recognition listed in the Library of Congress. Robert oversees all administrative activities related to Chapters, Instructors, School Owners and Membership Benefits.

    Linda Otto

    Linda Otto
    Executive Director

    Linda is responsible for maintaining efficiency in the everyday operations of this administration. Striving for a competent staff that delivers impeccable service to its members, quality assurance and promptness to all inquires with a cheerful and knowledgeable response is of utmost importance to her. Linda is formally trained in Hypnosis and has been actively involved in the profession since 1989.

    Ashley DymondAshley Dymond
    Membership Services

    When you call the corporate office, Ashley is the friendly and helpful voice you'll hear on the other end of the telephone. As Membership Services Coordinator, she assists in all referrals and is always available to attend to the needs of our members with the utmost care. She is an adoring wife, the mother of two children, a professional musician, and an advocate for human rights, Neurodiversity & Autism. Ashley comes to us with over 20 years of combined experience in customer service, marketing, human resources, business management, and accounting. She enjoys learning, kayaking, hiking, reading, traveling, and spending time with her large extended family in her leisure time.

    Rita Vandemark

    Rita VanDeMark
    Online Services

    Rita is responsible for the operations of the online system. She ensures the system is functioning properly and assists in all requests, updates and changes within the system. Rita is a native of Northeastern PA with many years of experience in customer service. She is married, the mother of two children and grandmother of four. In her leisure time, Rita enjoys baseball and gardening.

    Diane Ives Patti Tewksbury
    Financial Services

    Patti joined the IACT | IMDHA operations team after retiring from a 25+ year career as a technician at Proctor & Gamble. She is a devoted wife, mother, and grandmother who loves spending time with her family and friends. In her free time, away from the business office, she enjoys live music and dancing, true crime shows and documentaries, baking, and is an expert whistler with a keen sense of humor.

    Christina Otto

    Christa Otto Bubba
    Conference Liaison

    Christa has been around Hypnosis since her pre-school years. A graduate of Mansfield University, Christa uses the basic concepts learned from early childhood to solidify a booming career in sales with an emphasis on personalized customer service. Christa is responsible for coordinating conference volunteers and staff and oversees many conference-related details.

    Dan Dunham

    Dan Dunham
    Web Designer

    We keep Dan very busy and welcome his expert advice and assistance with our web development and web presence. Dan is experienced and knowledgeable and is a constant source of help for us in our everyday online challenges. He is dedicated to providing our members with user-friendly web site navigation and state-of-the-art services, while maintaining a professional appearance and web presence.

    Ron Stamets

    Ron Stamets
    Web Development

    As a kid, Ron tended to gravitate towards animated toys that did something. "My favorite toy was a Mechanix Set. I would spend hours building gizmos that would sling marbles all over the floor, or Ferris Wheels for my other toys to ride in". But no matter what, a successful project had to do something. Go whiz, bang, zoom, scare the cat...whatever."

    25 years ago, Ron discovered something that not only allowed him to use the experience he gained in his previous businesses, but fulfilled everything he enjoyed as a child, writing code that makes web sites go whiz, bang, zoom!.

    Ed Horn

    Ed Horn
    Audio/Video Technology

    Ed manages all areas of Videography and Audio production within our organizations. He is responsible for the taping and reproduction of all conference and symposium recordings. He also creates and distributes audio/video media via video marketing technology. Ed is our 'go to' person in this area of expertise. In addition to being a team player and a consummate perfectionist, Ed comes to us with formal training in Hypnosis.