Western Haematology and Oncology Clinics is operated by Montserrat Cancer Care.

Our Specialists are experts in their field and are focused on providing their patients with the best care available including access to clinical trials.

Our centres facilitate a care philosophy of wellness through treatment for blood conditions and cancer, rather than illness.




Western Haematology and Oncology Clinics is operated by Montserrat Cancer Care.

Our Specialists are experts in their field and are focused on providing their patients with the best care available including access to clinical trials.


Prof. Ross Baker

Clinical Haematologist &


Professor Ross Baker is a practising consultant haematologist, clinical researcher and is currently:

  • Director Medical Services – Western Haematology and Oncology Clinics;
  • Senior Consultant Haematologist – Hollywood Private Hospital;
  • Director WA Centre for Thrombosis and Haemostasis – Murdoch University;
  • Director Haemophilia Treatment Centre – Hollywood Private Hospital; and
  • Chairman – Perth Blood Institute

Professor Baker’s major interest is the translation of new scientific discoveries into clinical haematology practice. He has extensive clinical and laboratory experience in a wide range of haematological disorders and has been a consultant in haematology for over 25 years.

As Principal Investigator in, more than 125 large international phase II and III clinical trials, he has actively led and participated in clinical research in venous thrombosis, leukaemia, lymphoma, myeloma, thrombocytopenia, Von Willebrand disease and haemophilia.

He has authored over 127 papers in peer reviewed medical journals with high impact factor and has been a regularly invited speaker at international and national medical meetings.

He is a founding director and secretary of the Australasian Society for Thrombosis and Haemostasis (ASTH now THANZ), Founding Chair of the Perth Blood Institute and scientific advisor to the World Health Organisation on DVT in 2001.

He has enthusiasm for teaching medical and science students and supervises post graduate PhD, masters and honours research programs. He directs the Regional Training Scheme Program with Malaysia for specialist clinical and research training and mentoring with the International Society of Thrombosis and Haemostasis. He initiated Medical Science Encounter days for promising year 11 and 12 high school students, to enable them to have hands on laboratory research experience and to discover the power of science.

Dr Maan Alwan

Consultant Haematologist &


Dr Maan Alwan is a dual qualified clinical and laboratory haematologist. He completed his specialist training at Royal North Shore Hospital in Sydney. 

Dr Alwan has clinical interest in both malignant and non-malignant haematology. With a special interest in;

  • Myeloma
  • Lymphoma / lymphoproliferative disorders
  • Thrombosis and Haemostasis
  • Bone Marrow Dysfunction / Cytopenia Management

Dr Alwan’s private consulting rooms are based at Western Haematology & Oncology Clinics in West Perth and Midland. Dr Alwan is also a part-time laboratory haematologist at Western Diagnostic Pathology.

As a clinical investigator at Perth Blood Institute, Maan is also strongly involved in clinical trials and research in Myeloma, Lymphoma and Clotting & Bleeding disorders.


Dr Peter Tan

Consultant Haematologist &


Dr Peter Tan specialises in haematological oncology, and general haematological conditions including obstetric haematology, bleeding and clotting disorders. He consults at Western Haematology & Oncology Clinics and Royal Perth Hospital.

He understands that blood disorders are often complex and prioritises the provision of comprehensive and clear explanations. A new diagnosis may often cause a level of stress and uncertainty for patients and their families, therefore he plans to demystify the process of investigations and therapeutic options. 

Dr Tan obtained his medical degree from the University of Western Australia (UWA) and commenced training at Royal Perth Hospital. Dr Tan completed his specialist training in haematology and bone marrow transplantation at St Vincent’s Hospital, Sydney. He obtained specialist qualifications in clinical and laboratory haematology from the RACP and RCPA. Dr Tan held the position of the Kefford Leukaemia Research Fellow at the Alfred Hospital, Melbourne, for three years.

He is a principal investigator for clinical trials at the Perth Blood Institute (PBI) and at Royal Perth Hospital. He has also obtained research grants from the WA Cancer and Palliative Care Network (WACPN) and RPH Medical Research Fund (MRF) for research in co-operation with Cell and Tissue Therapies WA (CTTWA).

Dr Tan maintains an interest in the safe use of blood transfusion products and is a member of the RPH Blood Transfusion Committee. He is a member of the RPH Drug and Therapeutics Committee (DTC) that evaluates novel therapies. He supervises physician and haematology specialist trainees and lectures medical students at UWA. He is a haematopathologist at Western Diagnostics Pathology and is the current Chair of the Medical Advisory Committee (MAC) for Western Haematology & Oncology Clinics.

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Dr Wei-Sen Lam

Medical Oncologist


Dr Wei-Sen Lam is a Medical Oncologist who treats a broad range of cancer with interests in lung cancer and melanoma. He also works at Fiona Stanley Hospital and Esperance Hospital. Dr Lam has several leadership roles including Head of Medical Oncology Department at Fiona Stanley Hospital and was previously Director of Medical Oncology WA Country Health Service and Co-Chair of the WA Cancer Oncology Group.

He is passionate about improving cancer services for rural and remote WA and has developed new and innovative services including Telechemotherapy and Telelymphoedema. During his time as Director of Medical Oncology for WA Country Health Service, Dr Lam providing leadership in implementing the WA Country Health Service Cancer Plan and helped commence new cancer services in Karratha, Broome and Narrogin and a Telelymphoedema service in Esperance and Katanning.

Wei-Sen holds a Masters of Health Administration and completed a leadership course with the Australian Institute of Management. Wei-Sen has a keen interest in research and is actively involved in clinical trials. Dr Lam was a successful recipient of the WA Cancer and Palliative Care Network Fellowship and is a principal investigator in several lung cancer trials at Fiona Stanley Hospital. Dr Lam is currently the Director of Teletrials. Dr Lam is working with the Australian Teletrial Program to develop clinical trial units in country WA and create a pathway to help improve access to clinical trials for patients.

Dr Lam’s special interests are:

  • Lung, Mesothelioma, Melanoma and Breast Cancer
  • Upper GI Tumours and Colorectal
  • Prostate