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Health, Safety & COVID-19

No food or drink is to be brought into our offices.

We ask that all persons attending wear a mask (except children under 8), and that no more than one person attend the consultation with a minor child. Any prams should be left in the hallway outside our office. 

If you are unwell, we ask you to let us know and not attend our office.

We continue to conduct investigations, provide prescriptions, and advise on follow-up arrangements.


Requests for an appointment or any queries may be submitted here

New Office

Please note our new Wahroonga office is at Suite 308, 172 Fox Valley Road (Parkway San Clinic). Limited street parking is available across the road and there is paid parking downstairs. You may contact us on the same phone numbers. 

Practice areas

We provide outpatient and inpatient consultations and care for patients across the full spectrum of:

  • Allergy

  • Clinical Immunology

What we do

  • We investigate, diagnose and manage food allergy and intolerances, tick and venom allergies and airborne allergies.

  • We prescribe, initiate and supervise allergy vaccines (allergen immunotherapy, desensitisation treatments).

  • We see people with immune-mediated adverse medication and vaccine reactions, and advise on alternatives, testing and desensitisation.

  • We diagnose causes of contact dermatitis through patch testing.

  • We manage urticaria and angioedema, mastocytosis, allergic rhinitis, allergic conjunctivitis, asthma and eczema, autoimmune connective tissue and skin disease, sarcoid, autoinflammatory disorders, recurrent infections and primary immunodeficiency disorders.

  • We provide support for other specialists where immunosuppression is needed with medication or biologicals.

  • We have expertise in clinical laboratory medicine and undifferentiated clinical problems.

What we don't do

  • We are not general paediatricians.

  • We do not manage HIV patients in our consultation rooms.

  • We do not recommend controversial and unproven allergy tests and treatments.

Practice Areas

Our team

Dr Karl W Baumgart

Consultant Physician in Clinical Immunology and Allergy

More details

Dr Andrew J Broadfoot

Consultant Physician in Immunology and Allergy

More details

Dr Jocelyn X Jiang

Consultant Physician in Immunology and Allergy ​

More details

Dr Pei Dai

Consultant Physician in Immunology and Allergy​

More details

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