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.

Dr Simon McRae

Consultant Haematologist &


Dr McRae is a senior consultant haematologist with over 20 years’ experience in both clinical and laboratory haematology. He has a focused interest in thrombotic and haemostatic disorders, but also has broad experience in the management of malignant haematological conditions.

Dr McRae completed haematology training in Tasmania, New South Wales, and Scotland. He then undertook a 3 -year clinical fellowship in venous thrombosis management at McMaster University, Ontario. He has worked as a consultant haematologist throughout Australia including time as the Director of Clinical Haematology at both the Royal Adelaide and Launceston General Hospitals.

He has a particular interest in the management of venous thrombosis and bleeding disorders and has been involved in clinical trials as a principal investigator for over two decades. He has over 50 peer reviewed publications and book chapters, and has been a contributing author to consensus international guidelines in his areas of interest.

He has previously served on the executive of the Australian Society of Thrombosis and Haemostasis (ASTH now THANZ), and was chair of the Australian Haemophilia Centre Directors Organisation (AHCDO) for over 6 years.

Dr McRae believes strongly in providing clear information to allow patients to be make informed decisions regarding their own management, and the tailoring of evidence based treatment to meet individual patient needs.

Dr Simon McRae

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. Dr Lam graduated from University of Western Australia and completed his specialist training at Fiona Stanley and Sir Charles Gairdner Hospital.

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 actively involved in education as the co-chair for WA Clinical Oncology Group (WACOG).

Dr Lam’s special interests are:

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

He also has a Masters of Health Administration with Monash University and is currently the Director of Teletrials for WA Country Health Service. He is passionate for improving cancer services for rural and remote WA and is known for his kind and approachable manner.