NPPES file of Aug 9, 2026

Jackson W. Chen, M.D.

General Practice Physician · Oak Brook, IL

Jackson W. Chen, M.D. is a general practice physician with a practice address in Oak Brook, Illinois, and NPI 1316113954, issued on May 4, 2008. Check the license (Illinois 036-047434, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1316113954
Name
Jackson W. Chen
Credential
M.D.
Primary taxonomy
General Practice Physician 208D00000X
License numbers
036-047434 IL
C50725 CA
Self-reported in NPPES; status is on the state search
Practice location
209 Indian Trail RD, Oak Brook, IL 60523
Phone
(760) 717-1412
Enumerated
May 4, 2008
Record last updated
May 6, 2008 (not updated in 18 years: call before relying on the address or phone)
Fax
(760) 918-0960
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest general practice physician records → All 291 in Illinois → Look up another NPI →

Verify Jackson W. Chen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036-047434    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

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99% fewer Medicare Part D claims than the average general practice physician in 2024

32 Medicare Part D claims, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D.

  1. Jackson Chen32
  2. Specialty average3,030

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.

Jackson W. Chen among 291 general practice physician records in Illinois

Jackson W. Chen, M.D. is one of 291 general practice physician records with a practice address in Illinois. 42% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 58% of them.

  • NPI issued2008 · 58% of these records are older, 39% newer
  • In a Medicare fileYes · 42% of these records are
  • In the CMS Doctors and Clinicians fileNo · 18% of these records are
  • Record last updated2008 · 67% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

General Practice Physician providers in Illinois

There are 291 general practice physician records in Illinois.

All 291 in Illinois → Every provider in Oak Brook → General Practice Physician nationwide →

The 8 general practice physician records with the nearest ZIP codes

  1. Vedavathi Agadi, M.D.Oak Brook, IL 605231134491053
  2. Norma Arias, MDOak Brook, IL 605231356741854
  3. Lucena Crisostomo, M.D.Oak Brook, IL 605231063772507
  4. Geoffrey Jones, M.D.Oak Brook, IL 605231952437477
  5. Fionnuala Kelly, MDHinsdale, IL 605211336478114
  6. Shruti Patel, DOLa Grange, IL 605251760040406
  7. Vijay Marwaha, MDHinckley, IL 605201184623951
  8. May Kuo, M.D.Willowbrook, IL 605271750421582

Common questions

What is Jackson W. Chen, M.D.'s NPI number?

Jackson W. Chen, M.D.'s National Provider Identifier (NPI) is 1316113954, issued on May 4, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Jackson W. Chen, M.D. located?

The NPPES record lists a practice address at 209 Indian Trail RD, Oak Brook, IL, 60523. Phone: (760) 717-1412. Providers update this record themselves, so call before visiting.

How can I verify Jackson W. Chen, M.D.'s license?

NPPES lists Illinois license number 036-047434, 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 Jackson W. Chen, M.D. prescribe under Medicare Part D?

In 2024, Jackson W. Chen, M.D. had 32 Medicare Part D claims; the average among general practice physician prescribers was 3,030. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.