Lewis Barr, M.D.
Internal Medicine Physician · Riverwoods, IL
Lewis Barr, M.D. is an internal medicine physician with a practice address in Riverwoods, Illinois, and NPI 1245267962, issued on Jun 27, 2006. Check the license (Illinois 036-045724, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Lewis Barr
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036-045724 IL
Self-reported in NPPES; status is on the state search - Practice location
- 5 Columbine LN, Riverwoods, IL 60015
- Phone
- (847) 231-5286
- Enumerated
- Jun 27, 2006
- Record last updated
- May 5, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (847) 231-5289
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Verify Lewis Barr 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 036-045724Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
52 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Lewis Barr among 7,238 internal medicine physician records in Illinois
Lewis Barr, M.D. is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2015 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 internal medicine physician records list a practice address in Riverwoods
They are 5 of the 74 NPPES records with a practice address in Riverwoods, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Riverwoods → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Dana Ben-Dov, MDDeerfield, IL 600151194709477
- Mitul DesaiDeerfield, IL 600151437118361
- Jeffrey Foreman, M.D.Deerfield, IL 600151881663243
- Larry Kaskel, MDBannockburn, IL 600151285620484
- Tom Klein, MDRiverwoods, IL 600151326094194
- Monika McLain, MDBannockburn, IL 600151376539718
- Lisa Peck, M.D.Deerfield, IL 600151679539563
- Barry Rapaport, M.D.Deerfield, IL 600151114988417
Common questions
What is Lewis Barr, M.D.'s NPI number?
Lewis Barr, M.D.'s National Provider Identifier (NPI) is 1245267962, issued on Jun 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lewis Barr, M.D. located?
The NPPES record lists a practice address at 5 Columbine LN, Riverwoods, IL, 60015. Phone: (847) 231-5286. Providers update this record themselves, so call before visiting.
How can I verify Lewis Barr, M.D.'s license?
NPPES lists Illinois license number 036-045724, 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.
How much does Lewis Barr, M.D. prescribe under Medicare Part D?
In 2024, Lewis Barr, M.D. had 52 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.