About Ngaio Diagnostics

Ngaio Diagnostics is a privately owned supply company based in Nelson, New Zealand. Established in 1991, we specialise in the distribution and support of quality products to hospital laboratories, community clinical laboratories, veterinary laboratories, veterinary practices, food testing & environmental laboratories and food processors.

As a small privately owned company, we take your business personally. Doing business with us means you will deal with a team who know and understand what you are looking for. Dealing with us is quick and easy and we will always have you in mind as we source or develop new and improved products.


Rob Mckenzie Ngaio Diagnostics

Rob McKenzie (Managing Director)

Rob founded Ngaio Diagnostics in 1991 after working as a hospital scientist in Clinical Biochemistry and in the area of Quality Management.

Contact Rob on:
Telephone: +64 3 548 4727
Mobile: 021 464 246
Email: rob.mckenzie@ngaio.co.nz


Stuart McKenzie (Business Development Manager)

Stuart joined Ngaio Diagnostics in 2015 with a background in sales and business development. He also has a BSc degree in chemistry. Contact Stuart for any general business inquiries.

Contact Stuart on:
Telephone: +64 3 548 4727
Mobile: 022 351 5952
Email: stuart.mckenzie@ngaio.co.nz


Sai Palagummi (Sales and Technical Support Specialist – Molecular Biology)

Sai joined Ngaio Diagnostics in 2015 after completing a PhD in Forensic Science at the University of Auckland. Sai is based in Dunedin.

Contact Sai on:
Mobile: 021 464 249
Email: sai.palagummi@ngaio.co.nz


Mario Manoharan (Sales and Application Specialist – Dako Pathology and Clinical Diagnostics)

Mario joined Ngaio Diagnostics in 2018. Mario is a qualified Medical Doctor. Mario is based in Auckland.

Contact Mario on:
Mobile: 027 648 8481
Email: mario.manoharan@ngaio.co.nz

Stef Silvester (Technical Sales Consultant – Food, Hygiene and Allergen Testing)

Stef joined Ngaio in 2019 and has degree in Biochemistry from Otago University.

Contact Stef on:
Mobile: 027 283 8633
Email: stef.silvester@ngaio.co.nz


Angela Houghton-Rutherford (Administration & Accounts)

Please contact Angela for all queries regarding accounts or administration.

Contact Angela on:
Telephone: +64 3 548 4727
Email: angela@ngaio.co.nz