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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Marie Brown Feldman, MD

Internal Medicine Physician in Oak Park, IL · enumerated 2006.

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

National Provider Identifier

1841386729

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Registry record

Entity type Individual (Type 1)
Name Marie Brown Feldman
Credential MD
Sex Female
Practice address Oak Park, IL, 60304
Phone (708) 524-2121
Fax (708) 524-3199
Enumeration date Oct 5, 2006
Last updated in NPPES Dec 26, 2013

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036061028 (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
31603350 Other IL BCBS OF IL
036061028 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 Marie Feldman practice?
The practice location on file with NPPES is in Oak Park, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Marie Feldman?
The National Provider Identifier (NPI) for Marie Feldman is 1841386729, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-12-26.