Yvonne O’Sullivan

Yvonne had learned from personal experience that life does not always deal you the best health hand but she truly believes that every single person deserves the chance to be healthy so that they can live a full and happy life.

If you have tried and failed, if you are frustrated and tired of feeling unwell, Yvonne would love to work with you, without judgement or prejudice to find your healthiest and happiest self.

Yvonne specialises in: 

  • Thyroid Health
  • Histamine Intolerance
  • Autoimmune disorders
  • Chronic fatigue
  • Solving complex health issues
  • Cancer support
  • Weight loss and body composition
  • Stress and anxiety
  • Pain & inflammation
  • Digestive health

Finding the underlying drivers behind complex health issues is what Yvonne loves to do. Solving health puzzles, uncovering the clues missed by others and helping to empower others to take control of their own health is what inspires her every day. While mainstream medicine focuses on your health as a system (you see a cardiologist for your heart, podiatrist for your feet etc), Yvonne specialises in ‘general practice’ rather than a condition or system as she believes in a more holistic approach to see the whole person, with systems that interact and where poor health in one system can mean disharmony in another system.  Yvonne believes being dyslexic helps her to see the patterns of health differently and helps her solve complex health issues.

Yvonne studied Herbal Medicine at the University of Newcastle before undertaking science honours research, investigating the quality of natural medicines in Australia. Yvonne has practiced and worked in the natural medicine industry for over 13 years, across a broad range of areas including natural medicine manufacturers, raw ingredients sourcing from all over the world, as well as teaching health professionals and tertiary students in nutrition, chemistry and natural medicine. This industry insight has made her somewhat of a product expert and means she will know exactly which products will work best for you.

Yvonne was also a sales rep for many years , representing sales and technical support for several natural medicine companies and as a result saw the inside of some of Australia’s most successful and well known natural medicines practices. Yvonne could never see herself working in one of these clinics until the day she walked into Mullen Health – and we are so excited to have her on board.

Yvonne has two grown boys, and three grandsons and loves spending time either on the water, near the water or in the water.

**Yvonne is currently providing Telehealth consults Mondays – Tuesdays and face-to face consults on Wednesdays **

Fast Facts 

Favourite Time Of The Day?

Just before dawn – I love breathing in the peace and serenity before the rest of the world wakes

Best Health Tip?

Grow what you can, cook real food and take time to savour the outcome

Favourite Supplement:

Sulforaphane – a powerful natural detoxifier, antioxidant and cell protective agent. One of the most powerful known, naturally occurring inducers of the body’s own defence mechanisms against oxidative stress, inflammation and free radical damage.

What Do You Never Leave Home Without?

Water, sunglasses and a good book!

Favourite cuisine?

Spicy food – Indian, Malaysian or Thai food – as long as it’s hot!

Favourite exercise?


Videos From Yvonne

Kind Words From Yvonne’s Patients

“Helpful, clear explanation of everything & every step. Friendly with great customer service. Yvonne is fantastic, empathy and guidance in everything to do with treatment recommendations.” Jen

“Loved seeing Yvonne at Mullen Health. She is so knowledgeable and kind. After just my first appointment with her she’s helped changed my mindset on my health journey. They’re so knowledgeable, friendly and understanding. So far a great experience.” Bianca

” I have recently started seeing Yvonne at Mullen, and I have learnt so much about myself and natural health in general. It is so nice to have a holistic practitioner who listens to everything I have to say, and wants to help me understand and better my health. I am having a great experience at Mullen. ” Steph

“Left FB Review: Saw Yvonne today. she was amazing and really “got” me and my health concerns. Came away from that initial appointment feeling really positive and knowing we will get to the root of my problem. Thank you Yvonne” Michelle

” Yvonne service and capabilities are outstanding and the testing is extremely fast and detailed” Jaymee

“Would recommend to anyone who is looking to feel better & get back in control of their health and general lifestyle. Yvonne and the whole team are fantastic!” Gjenae

” Make an appointment with Yvonne today… She’s amazing & will have you feeling in good health again with her wonderful knowledge & expertise…..
HIGHLY RECOMMEND YVONNE….Thankyou so very much” Del
“The staff are all really friendly and knowledgeable. I have been seeing Yvonne. She is amazing and has helped me to improve my health, particularly regarding my energy levels, mood and sleep. I would definitely recommend the team a Mullen Natural Health!” Elise

” I’ve never been happier or healthier since following the fabulous advice and support of Yvonne at Mullen Health.” John

“I highly recommend Mullen Health, especially Yvonne. Yvonne has been wonderful helping me with stress and understanding how it effects my hormones. Since implementing changes to my diet and lifestyle, I am noticing significant improvements in my general health and well-being.” Melinda

“I had my first consult with Yvonne yesterday and she was amazing. It was well worth the drive up from Sydney to do my first meeting face to face (they do do telephone as well) I am really looking forward to starting this journey with her and getting my health back. if you are thinking about seeing a naturopath then i would HIGHLY recommend.” Caroline

“A wonderful service. The initial contact and follow up was super quick. A free initial phone chat is also a great idea – and recommendations from the health bar is a fantastic advantage. I met with Yvonne and it was a really thorough appointment and I felt extremely comfortable and valued. I’m looking forward to future appointments and ultimately feeling better” Jenna
“I have had only lovely experiences with Mullen Health. All staff are very professional, warm and friendly. Yvonne is very thorough, realistic with personal goals and I have full confidence with her knowledge that she will find the answers for my good health” Jo

Have question? Eager to know more? Fill out the form below and we’ll be in touch!


    16 Murray Street Hamilton NSW 2303

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