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

Dr. John Hayden Sonnier, MD

Individual provider Pediatrics Physician · NPI 1053005025

Dr. John Hayden Sonnier, MD is a Pediatrics Physician in Chicago, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2023
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

225 E Chicago Ave
Chicago, IL 60611-2991
Phone: (312) 227-4000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence 125.083394 (IL)

Record details

NPI number1053005025
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 5, 2023
Last updated in NPPESJune 19, 2024
Certification dateJune 19, 2024

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