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Dr. Marc L Wiener, M.D.

Internal Medicine Physician in Carol Stream, IL · enumerated 2006 · practices at A & M Internal Medicine, Ltd..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1861435927

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Registry record

Entity type Individual (Type 1)
Name Dr. Marc L Wiener
Credential M.D.
Sex Male
Practice address 27w170 Saint Charles Rd, Carol Stream, IL, 60188
Phone (630) 562-9100
Fax (630) 562-9172
Enumeration date Jun 14, 2006
Last updated in NPPES Feb 19, 2020

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036076864 (IL) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
002220114 Other IL BCBS NUMBER
056076864 Medicaid IL -

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where does Marc Wiener practice?
The practice location on file with NPPES is in Carol Stream, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Marc Wiener?
The National Provider Identifier (NPI) for Marc Wiener is 1861435927, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-02-19.