Lewis Barr, M.D.
NPI 1245267962 · Internal Medicine Physician · Riverwoods, IL
Enrolled with Medicare as Practitioner - Sleep Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lewis Barr, M.D. is a Internal Medicine Physician provider in Riverwoods, IL (NPI 1245267962).
Provider details
- NPI number
- 1245267962
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036-045724 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-27
- Last updated
- 2015-05-05
Frequently asked questions
- What is Lewis Barr's NPI number?
- Lewis Barr's National Provider Identifier (NPI) is 1245267962, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lewis Barr's specialty?
- Lewis Barr is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lewis Barr located?
- Lewis Barr's practice location on file with NPPES is 5 Columbine Ln, Riverwoods, IL 60015-3546.
- What is Lewis Barr's phone number?
- The practice phone number listed in the NPPES registry for Lewis Barr is (847) 231-5286.
- Does Lewis Barr accept Medicare?
- Lewis Barr is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lewis Barr's NPI active?
- Yes — Lewis Barr's NPI (1245267962) is active in the NPPES registry as of the last update on 2015-05-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.