Mercy Clinic Allergy, Asthma and Immunology - Clayton-Clarkson

15945 Clayton Road
Ballwin, MO 63011
Fax: (314) 919-2577
Hours of Operation:
Wednesdays: 8:15 a.m. - 5 p.m.

We proudly offer:

  • Care for adults and children
  • Onsite lab
  • Plenty of easily accessible parking

At Mercy Clinic Allergy, Asthma and Immunology in Ballwin, MO our goal is to help you breathe easier and feel better every day. Our allergists and specialists will work with you to develop a plan that balances controlling your allergies and any medication side effects to help you perform at your best.

Allergies are among the most common chronic illnesses.  They can develop at any age. They’re usually mild, but can be life threatening. If ignored, they can lead to chronic conditions in your head, chest, skin or digestive tract.  Allergies can be the cause of your sinus problems, headaches, earaches, snoring, eye problems, skin problems like eczema and hives, as well as diseases of the chest like asthma, bronchitis and chronic cough. 

Areas of Expertise

  • Diseases of the respiratory tract such as allergic rhinitis, sinusitis, asthma, hypersensitivity pneumonitis and occupational lung diseases
  • Allergic diseases of the eye including allergic conjunctivitis
  • Allergic conditions of the skin including atopic dermatitis, contact dermatitis, acute/chronic urticaria or angioedema
  • Adverse reactions to foods, drugs, vaccines, stinging insects and other agents
  • Diseases associated with autoimmune responses to self-antigens, or auto-inflammatory syndromes
  • Diseases of the immune system including primary immune deficiencies such as severe combined immune deficiency syndromes, antibody deficiencies, complement deficiency, phagocytic cell abnormalities, or other impairments in innate immunity and acquired immune deficiency related to HIV infection or drug-induced immune suppression.
  • Gastrointestinal disorders caused by immune responses to foods including eosinophilic esophagitis or gastroenteritis, food protein-induced enteropathies
  • Systemic diseases including anaphylaxis and systemic diseases involving mast cells or eosinophils

Our Providers

James Temprano, MD, Mercy
Allergy and Immunology
Mercy Clinic