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

John David Siegfried, MD

Individual provider Gastroenterology Physician · NPI 1942314612

John David Siegfried, MD is a Gastroenterology Physician in Aurora, Illinois. Licensed in Illinois. Registered with an NPI since 2006.

Licensed in
IL
In the registry since
2006
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

1221 N Highland Ave
Aurora, IL 60506-1404
Phone: (630) 859-8700
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 036-053793 (IL)

Record details

NPI number1942314612
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 18, 2006
Last updated in NPPESJune 27, 2011
Mailing address1870 W Galena Blvd, Aurora, IL 60506-4356

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