Nancy Tran, M.D.
Internal Medicine Physician · Oak Brook, IL
Nancy Tran, M.D. is an internal medicine physician with a practice address in Oak Brook, Illinois, and NPI 1457393209, issued on Jun 12, 2006. Check the license (Illinois 036-111209, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Nancy Tran
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036-111209 IL
Self-reported in NPPES; status is on the state search - Practice location
- 900 Jorie Blvd, Oak Brook, IL 60523
- Phone
- (630) 954-6700
- Enumerated
- Jun 12, 2006
- Record last updated
- Jun 10, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (630) 954-1555
- Medicaid ID
- 036-111209 IL
- Medicare enrollment
- Enrolled (PECOS I20041209000071); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 2000
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 900 Jorie Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Nancy Tran 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 036-111209Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average internal medicine physician in 2024
339 Medicare Part D claims for 156 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Prednisone24 claims
- Furosemide19 claims
- Levofloxacin17 claims
- Metoprolol Tartrate16 claims
- Spironolactone16 claims
- Atorvastatin Calcium14 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.
Industry payments in 2024: $145.01
2 payments; by number, the most common kind was food and beverage; the largest payer was Bayer Healthcare Pharmaceuticals Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital affiliation
- Cgh Medical CenterSterling, IL · Acute Care Hospitals1 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Nancy Tran among 7,238 internal medicine physician records in Illinois
Nancy Tran, 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
- Graduated2000 · median 2003 among the 3,580 with a school on file
- Record last updated2008 · 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).
15 internal medicine physician records list a practice address in Oak Brook
They are 15 of the 950 NPPES records with a practice address in Oak Brook, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Oak Brook → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jennifer Candel, MDOak Brook, IL 605231164793949
- Richard Herbert, M.D.Oak Brook, IL 605231710045786
- Zaid Jabbar, M.D.Oak Brook, IL 605231730351115
- Mathai Karingada, M.D.Oak Brook, IL 605231831125988
- Meera Madappallil, M.D.Oak Brook, IL 605231699721142
- Ranjani Mohan, M.D.Oak Brook, IL 605231801017058
- Suman Narumanchi, M.D.Oak Brook, IL 605231962449439
- Fauzia Rana, M.D.Oak Brook, IL 605231538371893
Common questions
What is Nancy Tran, M.D.'s NPI number?
Nancy Tran, M.D.'s National Provider Identifier (NPI) is 1457393209, issued on Jun 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nancy Tran, M.D. located?
The NPPES record lists a practice address at 900 Jorie Blvd, Oak Brook, IL, 60523. Phone: (630) 954-6700. Providers update this record themselves, so call before visiting.
How can I verify Nancy Tran, M.D.'s license?
NPPES lists Illinois license number 036-111209, 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 Nancy Tran, M.D. prescribe under Medicare Part D?
In 2024, Nancy Tran, M.D. had 339 Medicare Part D claims for 156 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.