Matthew David Barnett
Internal Medicine Physician · Oak Lawn, IL
Matthew David Barnett is an internal medicine physician with a practice address in Oak Lawn, Illinois, and NPI 1386584555, issued on Mar 30, 2026. Check the license (Illinois 125.087506, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Matthew David Barnett
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 125.087506 IL
Self-reported in NPPES; status is on the state search - Practice location
- 4220 W 95TH St Ste 200, Oak Lawn, IL 60453
- Phone
- (708) 398-0287
- Enumerated
- Mar 30, 2026
- Record last updated
- Jul 8, 2026
- Entity
- Type 1 · individual
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Verify Matthew David Barnett 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 125.087506Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Matthew David Barnett among 7,238 internal medicine physician records in Illinois
Matthew David Barnett 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 not. Its NPI, issued in 2026, is newer than 96% of them.
- NPI issued2026 · 96% of these records are older, 0% newer
- In a Medicare fileNo · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2026 · 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).
173 internal medicine physician records list a practice address in Oak Lawn
They are 173 of the 2,993 NPPES records with a practice address in Oak Lawn, and 7,238 internal medicine physician records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 7,238 in Illinois → Every provider in Oak Lawn → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Robert Chalupczak, M.D.Oak Lawn, IL 604531679505051
- Anupam Goel, MDOak Lawn, IL 604531013957570
- Joseph Kowalczyk, MDOak Lawn, IL 604531831166255
- Vinay Kumar, MDOak Lawn, IL 604531639138217
- Eugene Muzykansky, MDOak Lawn, IL 604531457328874
- Win Myint, MDOak Lawn, IL 604531063412062
- Robert Raines, MDOak Lawn, IL 604531164499596
- Mark Reiter, M.D.Oak Lawn, IL 604531902864408
Common questions
What is Matthew David Barnett's NPI number?
Matthew David Barnett's National Provider Identifier (NPI) is 1386584555, issued on Mar 30, 2026. An NPI identifies a provider in billing; it is not a license.
Where is Matthew David Barnett located?
The NPPES record lists a practice address at 4220 W 95TH St Ste 200, Oak Lawn, IL, 60453. Phone: (708) 398-0287. Providers update this record themselves, so call before visiting.
How can I verify Matthew David Barnett's license?
NPPES lists Illinois license number 125.087506, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.