NPPES file of Aug 9, 2026

Geoffrey Leroy Jones, M.D.

General Practice Physician · Oak Brook, IL

Geoffrey Leroy Jones, M.D. is a general practice physician with a practice address in Oak Brook, Illinois, and NPI 1952437477, issued on Feb 26, 2007. Check the license (Illinois 036-070455, 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
1952437477
Name
Geoffrey Leroy Jones
Credential
M.D.
Primary taxonomy
General Practice Physician 208D00000X
License number
036-070455 IL
Self-reported in NPPES; status is on the state search
Practice location
120 Oakbrook Ctr, Oak Brook, IL 60523
Phone
(630) 734-8888
Enumerated
Feb 26, 2007
Record last updated
Apr 19, 2016 (not updated in 10 years: call before relying on the address or phone)
Fax
(630) 368-0826
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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Also registered at 120 Oakbrook Ctr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Madeline Bernbom, PSY.D.Clinical Psychologist1629126065
  2. Jennifer Catalfio, PA-CMedical Physician Assistant1386953057
  3. Jag Chawla, D.D.SOrthodontics and Dentofacial Orthopedics Dentistry1306065073
  4. Ann Collier, MDAllergy & Immunology Physician1891863411
  5. James Gianakakis, D.D.S.,M.S.Endodontics1841522612
  6. Cecilia Guzman, L.C.P.C.Professional Counselor1649320946

Verify Geoffrey Leroy Jones 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 036-070455
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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

18 Medicare Part D claims, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Geoffrey Jones18
  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.

Geoffrey Leroy Jones among 291 general practice physician records in Illinois

Geoffrey Leroy Jones, 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 2007, is newer than 43% of them.

  • NPI issued2007 · 43% of these records are older, 42% newer
  • In a Medicare fileYes · 42% of these records are
  • In the CMS Doctors and Clinicians fileNo · 18% of these records are
  • Record last updated2016 · 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.

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. Jackson Chen, M.D.Oak Brook, IL 605231316113954
  4. Lucena Crisostomo, M.D.Oak Brook, IL 605231063772507
  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 Geoffrey Leroy Jones, M.D.'s NPI number?

Geoffrey Leroy Jones, M.D.'s National Provider Identifier (NPI) is 1952437477, issued on Feb 26, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Geoffrey Leroy Jones, M.D. located?

The NPPES record lists a practice address at 120 Oakbrook Ctr, Oak Brook, IL, 60523. Phone: (630) 734-8888. Providers update this record themselves, so call before visiting.

How can I verify Geoffrey Leroy Jones, M.D.'s license?

NPPES lists Illinois license number 036-070455, 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 Geoffrey Leroy Jones, M.D. prescribe under Medicare Part D?

In 2024, Geoffrey Leroy Jones, M.D. had 18 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.

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.