Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. John Newcomb Sheagren, MD

Individual provider Internal Medicine Physician · NPI 1598780892

Dr. John Newcomb Sheagren, MD is an Internal Medicine Physician in Chicago, Illinois. Practices as a sole proprietor. Licensed in Illinois and Michigan.

Licensed in
IL, MI
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

836 W Wellington Ave
Chicago, IL 60657-5147
Phone: (773) 296-7084
Fax: (773) 296-5361
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 4301038958 (MI)

Record details

NPI number1598780892
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 13, 2006
Last updated in NPPESJuly 8, 2007

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