Becky Crook

Director – I.V. Boutique Integrated Health

As the Founder and Director, I am deeply committed to your well-being. With a rich background in the healthcare sector, I have amassed over 29 years of experience as a nurse. Recently, I have served as the Clinical Manager at Southern Cross Hospital for 7 years and held the same position at Tristram Clinic for 5 years.

Originating from Manchester, I relocated to Hamilton in 2003 and have found great fulfilment in serving the community. My dedication lies in delivering high-quality, patient-centred care, leveraging my expertise to ensure optimal treatment for all my patients.

In addition to my Registered Nurse qualification from the University of Sheffield, I have pursued further education, including specialised training in the care of patients undergoing chemotherapy from the University of Buckingham, Teaching in Professional Practice from the University of Manchester as well as a Post Graduate Diploma in Health and Social Practice. Furthermore, I possess extensive expertise in Intravenous Nutritional Infusions and HOCATT™ therapy.

In progress: SCOPE certification, endorsed by the World Obesity Federation.

Lastly, we have assembled a proficient team of hand picked professionals eager to assist you in achieving improved health. Patient well-being stands at the core of our mission, driving our commitment to excellence in all aspects of care delivery.

Dr. Stephan Neff

MD, FANZCA

Dr. Stephan Neff is a New Zealand–registered medical doctor and Functional Medicine Doctor with a background as a specialist anaesthetist and pain physician (MD, FANZCA, FFPMANZCA).

After decades working in hospital medicine—supporting patients through major surgery, complex pain conditions, and critical illness—Dr. Neff became increasingly interested in a deeper question: why do people become chronically ill in the first place, and how can we restore true health rather than simply manage disease?

This curiosity led him to functional medicine, an approach that focuses on identifying and addressing the root causes of illness through a systems-based understanding of the body.

Today, Dr. Neff works with patients across a broad spectrum of health, including:

• Chronic and complex illnesses where patients have not yet found answers
• Hormonal and metabolic health challenges
• Environmental illness and toxin exposure
• Integrative and supportive care in cancer
• Male health and sexual vitality

Beyond treating illness, Dr. Neff also works with athletes, performers, and high-performing professionals who want to optimise their energy, resilience, recovery, and long-term health. His approach focuses on improving metabolic function, hormonal balance, sleep, and nervous system regulation to help individuals perform at their best while protecting their future health and longevity.

Dr. Neff is a member of the Institute for Functional Medicine (IFM) and the Australasian College of Nutritional and Environmental Medicine (ACNEM). His work integrates advanced laboratory testing, nutritional and metabolic therapies, and personalised lifestyle strategies to address the deeper drivers of health.

In addition to his clinical work, he is an author and host of the Neff Inspiration show, where he shares insights on health, resilience, and human potential.

His mission is to help people move beyond symptom management toward genuine health, performance, and longevity.