Greenfield Medicinal Cannabis is a licensed medicinal cannabis importer and distributor in Australia.

A team of established industry leaders


Our Team

Greenfield MC is its people. It takes the best people to deliver the best product.



Nicholas Hanna 
Chief Executive Officer

Nicholas is a lawyer who specialises in regulatory, medical, criminal, and drug law, with significant experience in the Australian medicinal cannabis space. He has advised Australian medicinal cannabis businesses and has a wealth of knowledge about the Federal and State legal frameworks governing the industry. Nearly 10 years ago Nicholas founded Hanna Legal, a leading Sydney-based law firm. He has substantial experience working with the Medical  Council of NSW, Health Care Complaints Commission, and various other government departments and regulatory bodies. Nicholas has significant interests in medicinal cannabis assets in Canada, Colombia, Germany, and the USA.


A/Prof, Dr Sree Appu,
Chief Medical Officer,
Chairman of the Medical Advisory Board

Sree is a leading clinical Uro-Oncologist and the recent Clinical Head of Urology for the Monash Cancer Centre. He is the Head  of Southern Urology as well as IMAGENEX, a medical cancer screening service. Sree is also an academic researcher and was appointed Associate Professor in Urology by Monash University in 2012. He has published more than 50 peer reviewed articles in various medical journals and has served as an examiner, international reviewer, and educator. 


Arjun Chhabra
Chairman and President

Arjun is a lawyer who specialises in corporate, drug, criminal, and regulatory law. He has a background in mergers and acquisitions, capital raisings, and structured financial products. Arjun has ample experience in working with start-ups and in emerging markets, having worked as a corporate lawyer in Australia, the Asia-Pacific, and the Middle East, and as an investment banker in sub-Saharan Africa. He has worked with Deloitte, Blake Dawson Waldron (now Ashurst), Baker & McKenzie, Clyde & Co, and was the co-Chief Executive Officer and later Chief Strategy Officer of Anthesis Capital. Arjun has interests in medical cannabis assets in the Americas and Europe.


Sandip Manku
Pharmaceutical and
Risk Compliance Officer  

Sandip is a registered Australian Pharmacist and a Member of the Society of Hospitals Pharmacists Australia. He has worked in the pharmaceutical industry for over 20 years in various Sales and Management roles in Roche Australia, Pfizer Australia, Sandoz Australia, and Hospira Australia. Sandip has owned and operated a pharmacy and founded a specialist pharmaceutical wholesaler and importer which focuses on hospital pharmaceuticals and orphan drugs.


Ivon Diaz 
Quality Control Officer 

Ivon has worked in global pharmaceutical and health companies for 14 years in Colombia, Australia, and the United Kingdom. Most recently she has worked in the UK with Reckitt Benckiser as the Health Hub Quality Commercial Manager, and in their Australian subsidiary as the New Product Implementation Manager Australia and New Zealand, as well as Senior Quality Compliance Coordinator Australia and New Zealand. In Colombia, Ivon worked with Biochem Farmaceutica de Colombia as a New Product Development and Regulatory Affairs Associate, and prior to that with Schering AG (now Bayer AG) as a Quality Control and Quality Assurance Associate.


Meilani Humphreys
Sales and Distributor Officer

Meilani has worked in global pharmaceutical companies for over 15 years. She has worked at Roche Australia, Pfizer Australia, and Nutricia Australia. Meilani has held several sales and distribution roles and worked in new business development. Her previous positions have included Pharmaceutical Sales Officer, Hospital and Medical Clinic Specialist, Medical Devices Territory Manager, and Senior Relationship Officer. Meilani brings a wealth of experience in launching new pharmaceutical products.


Anthony George
Financial Officer

Anthony is a Chartered Accountant and Registered Tax Agent with nearly 20 years experience working in the Finance team at Pfizer Australia. At Pfizer Australia he held the following positions: Head of Finance Operations Australia and New Zealand; Company Secretary; Finance Manager; Financial Services Manager, Financial Controller, and Chief Accountant. Anthony has significant experience in corporate governance, business development, and mergers and acquisitions. Prior to joining Pfizer Australia, Anthony worked at Touche Tohmatsu (now Deloitte). 


John Gomez
Marketing Officer

John is an entrepreneur who has founded several businesses operating between Australia and Latin America. He is the founder and managing director of Antioqueno Australia, an importer of various alcoholic and agricultural products. John is the founder of various marketing, design, and consulting businesses based in Melbourne, specialising in new product development, brand identity, and public relations campaigns.


Corporate Advisory Board


John Latham 

John is a leading figure in the Australian pharmaceutical industry. He was the Managing Director and Chairman of Pfizer Australia from 2007 to 2012. Prior to that he was the Country Manager of Pfizer Singapore and Country Manager of Pfizer Malaysia. He was previously at Bristol-Myers Squibb as the Regional Finance Director Asia, Middle East & Africa, variously located between Princeton, New Jersey and Brussels. Before entering the pharmaceutical industry, he worked at PricewaterhouseCoopers in their Jakarta, Toronto, and Sydney offices.


Dr Adam Pirie

Adam is the Director of Operations at ABcann Australia, a wholly-owned Subsidiary of VIVO Cannabis Inc, a publicly traded medicinal cannabis company listed on the Toronto Stock Exchange. He completed his PhD at the University of Tasmania building and managing a pre-clinical bio-prospecting program which discovered novel plant-derived compounds and therapies to treat type II diabetes, cardiovascular disease, metabolic syndrome and vascular dysfunction. Adam has experience spanning the commercial, scientific and project management activities needed for successful commercialisation of early stage biotechnology.


Moz Ali 

Moz is a senior investment banker with over 20 years of financial services industry experience including advisory roles in Australia, UK, Europe, Asia and South Africa. His transaction experience spans mergers and acquisitions, equity and debt issuance, capital management, structuring and acquisition financing. Moz has worked with Deutsche Bank, Citi, and Tilinghast. Moz’s experience in the healthcare sector includes leading a debt capital raising for Primary Health Care and more recently as part of the team advising the Australian Federal Government on the $5.7 billion privatisation and IPO of Medibank Private. He is currently the Managing Partner of Theorem Consulting.


Tristan Hyodo  

Tristan is the Chief Executive Officer of MC Therapeutics Pty Ltd, a Queensland-based medicinal cannabis cultivator.  He has a background in the health supplements, nutraceuticals, and wellbeing markets. Tristan has held research, quality control, and product development roles in the FMCG industry, and worked for several years at Australia’s largest health food company.