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

Individual provider Internal Medicine Physician · NPI 1528049491

Dr. Gretchen M Weiss, MD is an Internal Medicine Physician in Chicago, Illinois. Licensed in Illinois and Massachusetts. Registered with an NPI since 2005.

Licensed in
IL, MA
In the registry since
2005
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

181 W Madison St Ste 4550
Chicago, IL 60602-4510
Phone: (312) 641-2586
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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 036115176 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 60694 (MA)

Record details

NPI number1528049491
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 8, 2005
Last updated in NPPESDecember 1, 2008

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