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

Herbert Sier, MD

Individual provider Geriatric Medicine (Internal Medicine) Physician · NPI 1881627446

Herbert Sier, MD is a Geriatric Medicine (Internal Medicine) Physician in Chicago, 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

680 N Lake Shore Dr Ste 1000
Chicago, IL 60611-4546
Phone: (312) 695-9797
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Geriatric Medicine (Internal Medicine) Physician (primary) Taxonomy 207RG0300X (IL)

Record details

NPI number1881627446
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 8, 2006
Last updated in NPPESJuly 8, 2007

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