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

Leonard B Siedband, MD

Individual provider Internal Medicine Physician · NPI 1992754840

Leonard B Siedband, MD is an Internal Medicine Physician in Niles, 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

7900 N Milwaukee Ave 18
Niles, IL 60714-3159
Phone: (847) 663-9700
Fax: (874) 663-9702
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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 · Licence 036053030 (IL)

Record details

NPI number1992754840
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 9, 2006
Last updated in NPPESApril 8, 2010

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