NPPES file of Aug 9, 2026

Theodore Lyons Stern, MD

Family Medicine Physician · Westmont, IL

Theodore Lyons Stern, MD is a family medicine physician with a practice address in Westmont, Illinois, and NPI 1043202567, issued on Aug 19, 2005. Check the license (Illinois 036-108619, 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
1043202567
Name
Theodore Lyons Stern
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License numbers
036-108619 IL
01058075A IN
Self-reported in NPPES; status is on the state search
Practice location
303 W Ogden Ave, Westmont, IL 60559
Phone
(630) 432-6200
Enumerated
Aug 19, 2005
Record last updated
Sep 23, 2022
Fax
(630) 432-6660
Medicaid IDs
200501020 IN
036108619 IL
Medicare enrollment
Enrolled (PECOS I20040126000133); accepts Medicare assignment
Medical or professional school
University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1998
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 303 W Ogden Ave

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

  1. Sarah BlowersAthletic Trainer1063145928
  2. Jessica Genslinger, PA-CPhysician Assistant1235674128
  3. Emily Good, PAPhysician Assistant1104531128
  4. Timothy Heilenbach, MDEmergency Medicine Physician1679634844
  5. Maggie Hillman, PA-CPhysician Assistant1013728336
  6. Sara Humes, APNNurse Practitioner1952029241

Verify Theodore Lyons Stern 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 036-108619
    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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75% fewer Medicare Part D claims than the average family medicine physician in 2024

886 Medicare Part D claims for 464 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 91 claims were for opioids.

  1. Theodore Stern886
  2. Specialty average3,544

Most prescribed

  1. Prednisone206 claims
  2. Azithromycin87 claims
  3. Cephalexin52 claims
  4. Hydrocodone-Acetaminophen51 claims
  5. Nitrofurantoin Mono-Macro48 claims
  6. Amoxicillin-Clavulanate Potass46 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.

2 hospitals and group practices

  1. Loyola University Medical CenterMaywood, IL · Acute Care Hospitals2 of 5 stars
  2. University OF ChicagoHomewood, IL

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.

Theodore Lyons Stern among 6,215 family medicine physician records in Illinois

Theodore Lyons Stern, MD is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 91% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated1998 · median 2006 among the 3,714 with a school on file
  • Record last updated2022 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

19 family medicine physician records list a practice address in Westmont

They are 19 of the 814 NPPES records with a practice address in Westmont, and 6,215 family medicine physician records in Illinois.

The 8 family medicine physician records with the nearest ZIP codes

  1. Craig Anderson, M.D.Westmont, IL 605591326025347
  2. Anthony Auriemma, M.D., J.D.Westmont, IL 605591578507562
  3. Paul Bicek, M.D.Westmont, IL 605591578557716
  4. Maria Douros, DOWestmont, IL 605591700873106
  5. Gina Drugas, MDWestmont, IL 605591760457253
  6. Brett Hampson, M.D.Westmont, IL 605591619922705
  7. Robert Janowitz, MDWestmont, IL 605591225004492
  8. Maris McIntyre, D.O.Westmont, IL 605591063652204

Common questions

What is Theodore Lyons Stern, MD's NPI number?

Theodore Lyons Stern, MD's National Provider Identifier (NPI) is 1043202567, issued on Aug 19, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Theodore Lyons Stern, MD located?

The NPPES record lists a practice address at 303 W Ogden Ave, Westmont, IL, 60559. Phone: (630) 432-6200. Providers update this record themselves, so call before visiting.

How can I verify Theodore Lyons Stern, MD's license?

NPPES lists Illinois license number 036-108619, 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 Theodore Lyons Stern, MD prescribe under Medicare Part D?

In 2024, Theodore Lyons Stern, MD had 886 Medicare Part D claims for 464 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.