Signature Allergy & Immunology

Contact Information

  • Office 314-872-3104
  • After Hours 314-872-3104
  • Fax 314-994-7105

Hours

  • Monday, Wednesday, Friday, 8:00 AM - 3:00 PM
  • Closed Tuesday
  • Thursday, 11:00 AM - 6:00 PM
  • Saturday, 8:00 AM - 11:00 AM
  • Office closed on select holidays (see below)

*Allergy injections will only be given by appointments only as to prevent overcrowding of our shot waiting room.

Holiday Hours

  • Office is closed on November 28 and November 29
  • Office is open on Saturday, November 30 by appointment only
  • Office is closed December 24 and December 25
  • Office is closed December 31 and January 1

Specialties

Main Location

Signature Allergy & Immunology
425 North New Ballas
Suite 203
St. Louis, MO 63141
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Services

Allergic Rhinitis (Hay Fever), Non-Allergic Rhinitis, Asthma, Adult Onset Asthma, Exercise Induced Asthma, Food Allergies, Hives, Acute and Chronic Sinusitis, Insect Allergies, Eczema, Contact Dermatitis, Itchy Skin, Drug Allergies, Immunology Issues, Recurrent Infection, Primary Immune Deficiencies, Skin Tests, Patch Testing, Oral Challenge and Desensitization

About

Best Places to Work 2024 BadgeTop WorkplacesSignature Allergy & Immunology is committed to the diagnosis, treatment, and management of asthma and allergy-related conditions. Our board-certified allergist and immunologist treats conditions related to any allergic condition listed above. Patients will be evaluated and tested depending on their medical history. We offer flexible hours and a family-friendly environment.

Signature Allergy & Immunology is part of Signature Medical Group ("SMG"). The SMG practices in the St. Louis area earned the "Best Places to Work" finalist distinction from the St. Louis Business Journal and the Top Workplaces award from the St. Louis Post-Dispatch in 2024.


Existing Patients: Please use the patient portal to request appointments and communicate with the office. Do not use the “Appointment Request” form on this website to communicate with Dr. Subramanian.

To reduce risk, no children under 16 are allowed at the office unless they have a scheduled appointment. 

Please refer to our Patient Forms for new patient packets, preparation for testing and our policies, including cancellation policies. Our doctors accept all major insurances. For more information, please visit our Insurance page.

Our office is USP 797 compliant.

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Doctors

Hamsa N. Subramanian, MD

Hamsa N. Subramanian

St. Louis, MO

  • Allergy and Immunology
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Providers