Mercy Clinic Allergy and Asthma - Smith Glynn Callaway

3231 S. National Avenue
Suite 200
Springfield, MO 65807
Fax: (417) 890-4178
Hours of Operation:
Monday & Friday: 8 a.m. - 4:30 p.m. Closed Wednesday Tuesday & Thursday: 8 a.m. - 6 p.m. Closed: Noon - 1 p.m.

Please Note

Your first visit will be a lengthy appointment and may last up to 2 hours.  We will obtain a complete history and perform a thorough physical examination.  Testing is often required in order to find the cause of your symptoms.  Bring the questionnaire and list of your questions to the appointment (We will mail the questionnaire to your home address before the appointment).

Please be sure to avoid antihistamines for three days before your appointment.  There is no reason to stop most medications, especially if they are nasal sprays or inhalers.  Do not take over the counter allergy or cold medications as they often contain antihistamines.  Do not stop any heart, blood pressure, hormone therapy or other medications you may be taking.

Allergies are among the most common chronic illnesses.  They usually are mild, but, if ignored, they can lead to the development of chronic disease of the head, chest, skin or digestive tract.  Allergies are a common cause of chronic asthma and even snoring.  They can develop at any age and can even be life-threatening.  Allergies may be found to 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.  Allergies can arise to insect stings, bug bites, medications and foods.

“Allergists” are also experts at diagnosing and treating patients with recurrent infections.  We will try to find a cause of your recurrent or chronic infections and provide treatment, if possible, to improve the way your body responds to infection in the future.

Mercy Clinic Allergy and Asthma in Springfield, MO employs specialists that are trained and certified in the treatment of allergy, asthma and immunology.  We are trained in the care of children and adults, developing a treatment plan to reduce illness in all age groups:  We not only take care of the problem, but search for the cause to prevent future episodes.

You can find answers to general questions by contacting the American Academy of Allergy, Asthma and Immunology (AAAAI) at  There is even a “virtual patient” where you can try and identify the cause of your symptoms.

Services offered at Mercy Clinic Allergy and Asthma - Smith Glynn Callaway:

Testing for aeroallergens

Testing for select insect venoms

Testing for select foods

Penicillin testing

Asthma testing

Food challenges

Prevention education

Immunotherapy to aeroallergens and venom

Immunodeficiency evaluation

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

Services Offered

Our Providers

Silvia Huebner, MD, Allergy and Immunology, Mercy
Allergy and Immunology
Mercy Clinic
Gregory K. Lux, MD, Allergy and Immunology, Pediatrics, Mercy
Allergy and Immunology
Mercy Clinic
Michael Alan Plastow, PA, Allergy and Immunology, Mercy
Allergy and Immunology
Mercy Clinic