NPPES file of Aug 9, 2026

Stephen James Clark, M.D.

Family Medicine Physician · Lindenhurst, IL

Stephen James Clark, M.D. is a family medicine physician with a practice address in Lindenhurst, Illinois, and NPI 1538123385, issued on Apr 17, 2006. Check the license (Illinois 036083190, 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
1538123385
Name
Stephen James Clark
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
036083190 IL
Self-reported in NPPES; status is on the state search
Practice location
3021 Falling Waters Blvd, Lindenhurst, IL 60046
Phone
(847) 356-9300
Enumerated
Apr 17, 2006
Record last updated
Sep 8, 2008 (not updated in 18 years: call before relying on the address or phone)
Fax
(847) 356-6781
Medicare enrollment
Enrolled (PECOS I20050919000437); accepts Medicare assignment
Medical or professional school
Northwestern University Feinberg Medical School, 1984
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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8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →

Also registered at 3021 Falling Waters Blvd

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

  1. Ryan Bagley, DPTPhysical Therapist1710934898
  2. Emilie Brennan, PA-CPhysician Assistant1285067660
  3. Theodore Galvani, MDEmergency Medicine Physician1801901814
  4. Sarah Gurchak, PA-CPhysician Assistant1306466610
  5. Heidi Helgeson Donaubauer, L.M.TSpecialist1497036628
  6. Christine Kharasch, MDFamily Medicine Physician1386643047

Verify Stephen James Clark 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 036083190    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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26% fewer Medicare Part D claims than the average family medicine physician in 2024

2,611 Medicare Part D claims for 336 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 79 claims were for opioids.

  1. Stephen Clark2,611
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium229 claims
  2. Losartan Potassium99 claims
  3. Amlodipine Besylate98 claims
  4. Lisinopril96 claims
  5. Metoprolol Succinate81 claims
  6. Rosuvastatin Calcium74 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: $2,015.33

98 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Stephen Clark$2,015.33
  2. Specialty average$902.55

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Stephen J. Clark M.d.,p.c.Lindenhurst, IL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Stephen James Clark among 6,215 family medicine physician records in Illinois

Stephen James Clark, M.D. 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 2006, is newer than 9% of them.

  • NPI issued2006 · 9% of these records are older, 59% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated1984 · median 2006 among the 3,714 with a school on file
  • Record last updated2008 · 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).

4 family medicine physician records list a practice address in Lindenhurst

They are 4 of the 147 NPPES records with a practice address in Lindenhurst, and 6,215 family medicine physician records in Illinois.

All 6,215 in Illinois → Every provider in Lindenhurst → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Terryll Joy, MDLake Villa, IL 600461598953754
  2. Christine Kharasch, MDLindenhurst, IL 600461386643047
  3. Peter Macdonald, M.D.Lindenhurst, IL 600461083960926
  4. Semyon Maslovsky, MDLake Villa, IL 600461508855040
  5. Thomas McGowan, M.D.Lindenhurst, IL 600461033173893
  6. Christopher Molitor, MDLake Villa, IL 600461265963383
  7. Kimberly Morstadt, MDLake Villa, IL 600461639370083
  8. Eugene Pomeranets, MDLake Villa, IL 600461770579005

Common questions

What is Stephen James Clark, M.D.'s NPI number?

Stephen James Clark, M.D.'s National Provider Identifier (NPI) is 1538123385, issued on Apr 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Stephen James Clark, M.D. located?

The NPPES record lists a practice address at 3021 Falling Waters Blvd, Lindenhurst, IL, 60046. Phone: (847) 356-9300. Providers update this record themselves, so call before visiting.

How can I verify Stephen James Clark, M.D.'s license?

NPPES lists Illinois license number 036083190, 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 Stephen James Clark, M.D. prescribe under Medicare Part D?

In 2024, Stephen James Clark, M.D. had 2,611 Medicare Part D claims for 336 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.

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.