Gretchen Weiss, MD
Internal Medicine Physician · Chicago, IL
Gretchen Weiss, MD is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1528049491, issued on Nov 8, 2005. Check the license (Illinois 036115176, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Gretchen Weiss
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 036115176 IL
60694 MA
Self-reported in NPPES; status is on the state search - Practice location
- 181 W Madison St, Chicago, IL 60602
- Phone
- (312) 641-2586
- Enumerated
- Nov 8, 2005
- Entity
- Type 1 · individual
Also registered at 181 W Madison St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Wendy Sternberg, MDInternal Medicine Physician1114053980
- Helen XenosFamily Medicine Physician1205003480
Verify Gretchen Weiss in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036115176Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
3,291 internal medicine physician records list a Chicago practice address
They are 3,291 of the 63,379 NPPES records with a Chicago practice address, and 8,522 internal medicine physician records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 3,291 in Chicago → All 8,522 in Illinois → Every provider in Chicago →
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- Abu Abbasi, MDChicago, IL1083243877
- Ayesha Abbasi, MDChicago, IL1376216705
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- Misha Abbasi, MDChicago, IL1770111635
Common questions
What is Gretchen Weiss, MD's NPI number?
Gretchen Weiss, MD's National Provider Identifier (NPI) is 1528049491, issued on Nov 8, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gretchen Weiss, MD located?
The NPPES record lists a practice address at 181 W Madison St, Chicago, IL, 60602. Phone: (312) 641-2586. Providers update this record themselves, so call before visiting.
How can I verify Gretchen Weiss, MD's license?
NPPES lists Illinois license number 036115176, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.