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Dr. Lewis Barr, M.D.

Internal Medicine Physician in Riverwoods, IL · enumerated 2006 · practices at Lewis Barr, M.D.,S.C..

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

National Provider Identifier

1245267962

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Registry record

Entity type Individual (Type 1)
Name Dr. Lewis Barr
Credential M.D.
Sex Male
Practice address 5 Columbine Ln, Riverwoods, IL, 60015
Phone (847) 231-5286
Fax (847) 231-5289
Enumeration date Jun 27, 2006
Last updated in NPPES May 5, 2015

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036-045724 (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
04926607 Other IL BCBS

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Lewis Barr?
Lewis Barr is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-05-05.