About Cocoon
Built from personal experience. Guided by people who understand.
Cocoon was founded by Dr Gary and Dr Lorene Dennis to make regular, professionally guided hyperbaric oxygen therapy more practical at home.
Born from Gary's own experience following a serious brain injury, Cocoon brings together personal assessment, tailored programmes, home delivery and ongoing support — so you're not left to navigate HBOT on your own.
Discover the Cocoon DifferenceGuided at-home HBOT • Auckland
Why Cocoon exists
Why Cocoon was created
For Gary, the decision to bring HBOT into the home began with his own recovery.
In 2019, Dr Gary Dennis experienced a serious brain injury. His experience with hyperbaric oxygen therapy gave him a personal understanding of both its possibilities and the practical challenges of accessing regular treatment.
Travelling to a clinic day after day was demanding. Bringing HBOT into his own home made it easier to maintain a consistent routine while managing everyday life.
That experience shaped Cocoon.
Gary and Lorene wanted to offer more than access to hyperbaric equipment. They wanted people to have individual guidance, a clear understanding of what was involved and support throughout their programme.
Today, that remains the foundation of Cocoon's approach.
A personal message from Dr Gary Dennis
What is your condition really costing you?
The real cost isn't just money. It's what your condition is taking from your life.
Your time. Your freedom. Your joy. Your connection to the people you love. Your confidence, your income, and perhaps the future you once imagined for yourself.
Your journey starts with a conversation. We'll listen to your story, ask the right questions, and if we believe we may be able to help, guide you through the clinical considerations and develop a personalised plan outlining the costs, timeframe, and realistic expectations.
No pressure. Just honest answers, a clear plan, and the information you need to make an informed decision about your future.
Dr Gary Dennis
DC (USA) • MMC (AUS) • Dip HBOT (USA) • NZCA
Why people choose Cocoon
More than a chamber. Guidance at every stage.
At-home HBOT should come with more than equipment and instructions. Cocoon combines a practical home-based service with individual guidance and ongoing support.
Individual assessment and guidance
We take time to understand your circumstances, health history and goals before recommending a programme. Gary guides the assessment and clinical considerations, with an emphasis on suitability and realistic expectations.
A programme built around you
There is no single approach that suits everyone. Your programme is developed around your individual circumstances, with clear guidance on how to use the chamber and what to expect along the way.
Practical treatment at home
We deliver and set up the chamber in your home and show you how to use it safely and confidently. With no daily clinic commute, regular HBOT can be easier to incorporate into your routine.
Real people, ongoing support
Our involvement doesn't end when the chamber is delivered. Gary and Lorene remain available for guidance, questions and support throughout your programme. You're dealing with people who know your circumstances.
The people behind Cocoon
Meet Gary and Lorene
Professional experience, personal understanding and a commitment to supporting people throughout their HBOT programme.
Dr Gary Dennis
Founder • HBOT assessment and programme guidance
DC (USA) • MMC (AUS) • Dip HBOT (USA) • NZCA
Gary founded Cocoon following his own experience with at-home hyperbaric oxygen therapy after a serious brain injury in 2019.
His professional training and personal experience shape the way Cocoon operates. He guides assessments and personalised programmes, helping people understand the practical and clinical considerations before beginning HBOT.
Gary believes in clear explanations, honest expectations and making sure people have the support they need throughout the process.
Dr Lorene Dennis
Patient support • Programme coordination
DC (USA) • Dip Paeds (AUS) • Dip HBOT (USA) • NZCA
Lorene brings a background in neuro-developmental paediatrics and years of experience working closely with children and families through Connected Families Chiropractic.
Her understanding of recovery is also personal. Having supported Gary following his brain injury, she knows that the impact of a health condition often extends to the whole family.
At Cocoon, Lorene helps people navigate their enquiries, understand the programme and feel supported throughout their time with the team.
Get in touch
Find out whether at-home HBOT is appropriate for you.
Contact Gary and Lorene's team to discuss your circumstances, ask questions and understand what's involved in a Cocoon programme. We'll explain the assessment process, programme options and next steps before you make any decisions.
Personal guidance • Honest answers • No obligation