Our Team

Tamar Krebs

Founder & Co-CEO

Tamar has worked in the Aged Care industry for the past 15 years both internationally and here in Australia. She has held senior management and leadership roles operating Retirement Villages, Hostels, Nursing Homes and Dementia Units. She holds many relevant and necessary qualifications such as a Masters of Health Service Management, a Bachelor of Science and various certificates and diplomas which provide her with a solid skill and knowledge base in Gerontology. She is recognised as a Specialist in both Behaviour Management and Aged Care and offers consultancies to various aged care providers.

Jonathan Gavshon


Jonathan comes with a strong background in business and Finance. Dementia and the aged care sector are also very close to his heart, having had a grandfather pass away from the disease. He has studied and worked overseas and in Australia. Most recently he worked for The Optical Company, a network of 30 glasses stores focusing on business development. Prior to that he worked at Allegro Private Equity, working alongside the CEO on the national rollout of a network of 50 mother and baby stores. He co-founded a start-up called Twobirds Bridesmaid, a retailer and wholesaler of bridal wear. From 2000-2007, he lived in New York where he was Vice President of J.P. Morgan’s Equity Capital Markets division. He is also passionate about the broader community, having founded The Observership Program, a not-for-profit focused on the leadership and development of young professionals. He has an undergraduate degree in Commerce and Masters degree in Business Administration. Jonathan is married to Daniella and has two children, who you may see around the homes…. they love to socialise!

Support Team

Amy Tsao

Financial Controller

Amy runs our finance department. She plays an integral role ensuring operational efficiency across our homes and corporate operation.

Ashley Blacker

National Business Development Manager

Ashley heads up our marketing, communications and industry business development. He has 10+ years of corporate experience in general practice, specialist clinics, medical research and public and private hospitals. He holds an MBA.

Jennifer Gavshon

Social Worker

Jennifer is a warm and approachable face that offers support to everyone – our residents, families and team members. She helps families transition to GHA and is available any time.

Marlena Natkaniec

Support Manager

Marlena is a trained counselor. She supports our residents, becomes familiar with their situation and provides guidance in relation to the choices available.

Jasper Ye

Account Clerk

Jasper is trained in accounting and ensures that all our accounts balance and bills get paid!

Larissa Lockrey

Office Manager

Larissa is our operational backbone. She plays an integral role working with our homemakers to ensure the homes run smoothly and ensures our office runs very smoothly!

Clinical Team

Madonna Jackson

Director of People, Care & Learning

Madonna is a Registered Nurse and has worked in aged care for 10+ years both in Australia and overseas. She has extensive clinical experience, but most importantly, she loves to care!

Joanna Bednarz

Clinical Manager & Registered Nurse

Nikki Sher

Registered Nurse

Wendy Lau

Registered Nurse

Johnny Fan

Registered Nurse

Jacinda Castelijn

Registered Nurse


Tanya Austin

Home Care Specialist

Tanya is a compassionate aged care professional with 20+ years of experience working with older adults and their families. She is passionate about helping older Australians navigate the ever-changing landscape of Australian aged care and finding the right solutions to for their care needs.

Kayleigh-Jane Ryder

Case Manager

Kayleigh-Jane is a Social Worker with 5 years experience in the aged care sector. She is passionate about helping people stay in their homes comfortably for as long as possible and coordinates services to help with this. She has an extremely bubbly personality and enjoys supporting families in their journey.

Homemaker Supervisor Team

Maria Burbano

New South Head Road

Karen Paraiso

Garrick Road
St Ives

Fabiola Gomez Rivas

New South Head Road
Rose Bay

Mary Reodique

Carrington Road

Thelma Marcelino

Alameda Way

Catyline Maingi

Benaroon Avenue
St Ives

Find out if GHA is right for your parent or loved one