James Thomas Barrett, M.D.
Internal Medicine Physician · Chicago, IL
James Thomas Barrett, M.D. is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1407863210, issued on Aug 2, 2006. Check the license (Illinois 036096271, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- James Thomas Barrett
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036096271 IL
Self-reported in NPPES; status is on the state search - Practice location
- 180 N Michigan Ave Ste 1605, Chicago, IL 60601
- Phone
- (312) 994-3000
- Enumerated
- Aug 2, 2006
- Record last updated
- Sep 12, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (312) 201-1202
- Medicare enrollment
- Enrolled (PECOS I20040325001025); accepts Medicare assignment
- Medical or professional school
- Eastern Virginia Medical School, 1995
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 180 N Michigan Ave Ste 1605
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nathan Jent, PA-CPhysician Assistant1184296303
- Shira Kazzaz, NPNurse Practitioner1144744095
- Jeannette Kelly, D.O.Family Medicine Physician1154769081
- Lester Stephen Montesa, PA-CPhysician Assistant1144819285
Verify James Thomas Barrett 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 036096271Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
45 Medicare Part D claims for 28 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through one group practice
- Michigan Avenue Immediate CareChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Thomas Barrett among 7,238 internal medicine physician records in Illinois
James Thomas Barrett, 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 fileYes · 50% of these records are
- Graduated1995 · median 2003 among the 3,580 with a school on file
- Record last updated2019 · 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).
2,867 internal medicine physician records list a practice address in Chicago
They are 2,867 of the 63,379 NPPES records with a practice address in Chicago, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Chicago → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Gregory Clarke, M.D.Chicago, IL 606011609996420
- Anne-Sophie Kim, MDChicago, IL 606011285195396
- Robert Noven, MDChicago, IL 606011326066929
- Linda O'Bannon, MDChicago, IL 606011932501533
- Neema Patel, DOChicago, IL 606011871813188
- Marianne Pavach, M.D.Chicago, IL 606011639205594
- Theri Raby, M.D.Chicago, IL 606011144250838
- Sydney Ross-Davis, M.D.Chicago, IL 606011801072558
Common questions
What is James Thomas Barrett, M.D.'s NPI number?
James Thomas Barrett, M.D.'s National Provider Identifier (NPI) is 1407863210, issued on Aug 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Thomas Barrett, M.D. located?
The NPPES record lists a practice address at 180 N Michigan Ave Ste 1605, Chicago, IL, 60601. Phone: (312) 994-3000. Providers update this record themselves, so call before visiting.
How can I verify James Thomas Barrett, M.D.'s license?
NPPES lists Illinois license number 036096271, 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 James Thomas Barrett, M.D. prescribe under Medicare Part D?
In 2024, James Thomas Barrett, M.D. had 45 Medicare Part D claims for 28 beneficiaries; 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.