The healthcare sector in Sydney features a mix of large established providers and newer digital health platforms. Companies like Ramsay Health Care, Uniting, and Calvary Health Care provide extensive hospital, community, and aged care services. Healius Limited specializes in diagnostic and pathology services, while GenesisCare focuses on integrated cancer care.
The companies listed primarily operate in the Hospitals and Health Care industry, with a notable presence of Non-profit Organizations such as Uniting and Wesley Mission. Most of these larger organizations are headquartered in Sydney, serving both local and national populations, with some extending their services internationally.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Ramsay Health Careramsayhealth.com
Provider of private hospitals, clinics, mental health, diagnostics, and community care services across multiple countries with extensive healthcare staff. |
11,896 | |||
| 2 |
Unitinguniting.org
An organization dedicated to inspiring, supporting, and advocating for individuals in local communities, promoting social justice and celebrating diversity |
4,761 | |||
| 3 |
Healius Limitedhealius.com.au
Provides affordable, accessible specialty diagnostic and pathology services across Australia through extensive laboratories and patient collection centers. |
3,531 | |||
| 4 |
Calvary Health Carecalvarycare.org.au
A charitable Catholic health care organization founded in 1885, providing compassionate and quality services to the most vulnerable populations across Australia |
3,336 | |||
| 5 |
GenesisCaregenesiscare.com
Provider of integrated cancer care globally, focusing on personalized treatment experiences and access to radiotherapy, diagnostics, oncology, surgery, and clinical trials |
3,134 | |||
| 6 |
NSW Ambulanceambulance.nsw.gov.au
Provider of high quality out-of-hospital clinical care to over 725 million people in NSW through emergency responses and community safety programs |
2,840 | |||
| 7 |
Estia Healthestiahealth.com.au
Provider of compassionate residential aged care with 70+ homes across Australia, delivering exceptional care and enriching experiences for residents. |
2,737 | |||
| 8 |
Sonic Healthcare Australia Clinical Servicesscs.com.au
National healthcare services provider offering a wide range of health services including general practice, occupational health, nursing, research programs, and chronic disease management programs |
2,681 | |||
| 9 |
Sonic Healthcaresonichealthcare.com
Internationally renowned healthcare provider specializing in pathology, radiology, and primary care with operations in multiple countries and a focus on quality medical diagnostic services |
2,328 | |||
| 10 |
I-MED Radiology Networki-med.com.au
Australia's leading diagnostic imaging network offering a wide range of medical imaging and radiology services across 240 clinics nationwide |
2,033 | |||
| 11 |
Western Sydney Local Health Districtnsw.gov.au
Delivering comprehensive healthcare to over a million residents in Western Sydney through top-notch clinical expertise, research, and compassionate care |
1,764 | |||
| 12 |
HammondCarehammond.com.au
A Christian charity specializing in aged care, dementia care, palliative care, rehabilitation, mental health, and dementia support services in Australia and the UK |
1,749 | |||
| 13 |
Wesley Missionwesleymission.org.au
A Christian organization in Australia providing support, advocacy, and community programs for vulnerable individuals and families for over 200 years |
1,295 | |||
| 14 |
NSW Justice Health & Forensic Mental Health Networknsw.gov.au
Delivering healthcare to adults and young people in contact with forensic mental health and criminal justice systems in NSW |
898 | |||
| 15 |
Eucalyptuseucalyptus.health
Digital healthcare platform offering telehealth services for men's health, fertility, dermatology, weight loss, and menopause, with a focus on high-quality care and patient safety |
888 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
Bupa Aged Care Australiabupaagedcare.com.au
Leading operator of residential aged care homes across Australia, with over 6000 committed employees providing quality care and innovative dementia support |
841 | |||
| 17 |
Lumus Imaginglumusimaging.com.au
A passionate team of 2000 experts providing affordable, accessible, and timely diagnostic imaging services with care and accountability across Australia |
833 | |||
| 18 |
Virtus Healthvirtushealth.com.au
Leader in fertility care and IVF services with top clinicians, scientists, and global presence Specializing in safe and successful treatment programs |
741 | |||
| 19 |
Chris O'Brien Lifehousemylifehouse.org.au
A not-for-profit cancer hospital offering comprehensive care, advanced treatments, holistic support, and cutting-edge research to improve patient outcomes and experiences |
638 | |||
| 20 |
Macquarie University Hospitalmqhealth.org.au
Private not-for-profit teaching hospital on university campus, focused on combining knowledge and expertise for comprehensive patient care with latest technology and therapeutic design principles |
626 | |||
| 21 |
Arriba Grouparribagroup.com.au
A group of companies providing rehabilitation, employment, and disability support services to help individuals recover, succeed, and achieve their goals |
617 | |||
| 22 |
Whiddonwhiddon.com.au
A not-for-profit organization providing award-winning aged care services in NSW and QLD, focusing on individual needs and community connections |
611 | |||
| 23 |
IPN Medical Centresipn.com.au
A network of general practices across Australia, providing high-quality patient care with a team of healthcare professionals, offering services in various locations |
576 | |||
| 24 |
Oscar Wyleeoscarwylee.com.au
National chain of optometry stores offering quality, fashionable eyewear at affordable prices Committed to expansion, dedicated service, and continuous improvement for patients |
571 | |||
| 25 |
St Vincent's Private Hospital Sydneysvph.org.au
A leading private hospital offering compassionate care, education, research, and professional growth opportunities, with a focus on innovation and excellence |
549 | |||
| 26 |
Healthe Carehealthecare.com.au
One of Australia's top private hospital operators, focusing on positive patient experiences and outcomes, with locations in major cities and regional areas |
546 | |||
| 27 |
CatholicCare Sydneycatholiccare.org
Social services agency providing support to individuals, families, and communities in Sydney, promoting dignity, strengthening families, and connecting communities in solidarity |
521 | |||
| 28 |
Ability Action Australiaabilityactionaustralia.com.au
Provider of NDIS registered therapeutic, behavior, and employment supports, offering tailored assessments and therapy services to improve capabilities and achieve goals |
489 | |||
| 29 |
Coal Services Pty Limitedcoalservices.com.au
An industry organization providing health, safety, environment, and insurance solutions to the NSW coal mining industry, supporting workers, employers, and communities |
459 | |||
| 30 | 411 | ||||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
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The same list elsewhere in Australia
- Healthcare providers in Australia 397
- Healthcare providers in New South Wales 132
- Healthcare providers in Victoria 116
- Healthcare providers in Queensland 68
- Healthcare providers in Western Australia 37
- Healthcare providers in South Australia 31
- Healthcare providers in Melbourne 31