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Immunology and Allergy
Immunology and Allergy

Allergy clinic

The Allergy Clinic is a referral based clinic for the diagnosis and management of children with complex allergic diseases including:

  • multiple drug allergies
  • latex allergy
  • anaphylaxis
  • food challenges
  • urticaria (chronic, idiopathic, cold/heat induced etc.)
  • asthma

Patients with complex medical conditions followed at SickKids who require an allergy assessment are also evaluated. Patients with routine allergies are referred to designated allergists in the community.

Our allergy team consists of three full-time staff, four part-time paediatric allergists, one full-time Clinical Nurse Specialist, and one part-time dietitian. The clinic is located on the main floor, Clinic 9 and operates on Tuesdays only from 9:00 a.m. - 2.00 p.m.

Allergy Staff

  • Adelle Atkinson
  • Julia Upton
  • Thomas Eiwegger
  • David Hummel
  • Stephen Feanny
  • Sasson Lavi
  • Maria Asper
  • Anna Kasprzak RN
  • Ahuva Magder-Hershkop RD

Allergy Clinic

  • Phone: (416) 813-8156


This is a Allergy (Clinical/Research) Clinic that is run by one Staff Physician, Dr. Thomas Eiwegger,  Registered Nurse, Anna Kasprzak and a Part Time Dietitian, Ahuva Magder.

The clinic is held once or twice a month on a Friday  from 9 a.m until 1 p.m.


Clinic Referral Guidelines

How to make a referral

  • All patients require a referral to visit our clinic.
  • If you are a health-care professional, log in to eCHN to submit your referral. From your eCHN account, you will be seamlessly connected to SickKids e-referral platform, EpicCare Link.
  • Learn more about our referral process.
  • For urgent referrals only (same day referrals), contact eCHN’s Helpdesk directly 416-813-7998 or 1-877-252-9900, or by email at helpdesk@echn.ca.
    On weekends and after 6 p.m. on weekdays, please contact the Fellow on call via SickKids Locating at 416-813-1500.

For more information, please contact:

Anna Kasprzak
Allergy Nurse
The Hospital for Sick Children
Phone: 416-813-5300
Fax: 416-813-8638
email: anna.kasprzak@sickkids.ca