Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Barry F Zeffren, MD

Individual provider Allergy & Immunology Physician · NPI 1205908639

Barry F Zeffren, MD is an Allergy/Immunology in Saint Louis, Missouri. Graduated from Saint Louis University School of Medicine in 1979, 47 years ago. Practices as a sole proprietor, works from 2 locations and accepts Medicare assignment. Licensed in Illinois and Missouri.

Years since qualifying
47
Trained at
Saint Louis University School of Medicine
Licensed in
IL, MO
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

8150 Amherst Ave
Saint Louis, MO 63130-3605
Phone: (773) 260-0964
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 4 Country Club Executive Park, Glen Carbon, IL 62034 — (618) 288-6673

Specialties & licences

Allergy & Immunology Physician (primary) Taxonomy 207K00000X · Licence R8A32 (MO)
Allergy & Immunology Physician Taxonomy 207K00000X · Licence 036068207 (IL)

Record details

NPI number1205908639
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedNovember 14, 2006
Last updated in NPPESJuly 14, 2026
Certification dateJuly 14, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyALLERGY/IMMUNOLOGY
Medical schoolSAINT LOUIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 1979 (47 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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