Stephen Clark, M.D.
NPI 1538123385 · Family Medicine Physician · Lindenhurst, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Clark, M.D. is a Family Medicine Physician provider in Lindenhurst, IL (NPI 1538123385).
Provider details
- NPI number
- 1538123385
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036083190 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,091 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 454 | $129 |
| Insertion of Needle Into Vein (3 Years Or Older)36410 | 291 | $18 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 92 | $8 |
| Administration of Influenza Virus VaccineG0008 | 64 | $29 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 61 | $86 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 46 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 59 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 229 | 71 |
| Losartan Potassium | 99 | 32 |
| Amlodipine Besylate | 98 | 32 |
| Lisinopril | 96 | 37 |
| Metoprolol Succinate | 81 | 26 |
| Rosuvastatin Calcium | 74 | 29 |
| Omeprazole |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,015 across 98 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-17
- Last updated
- 2008-09-08
Frequently asked questions
- What is Stephen Clark's NPI number?
- Stephen Clark's National Provider Identifier (NPI) is 1538123385, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Clark's specialty?
- Stephen Clark is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Clark located?
- Stephen Clark's practice location on file with NPPES is 3021 Falling Waters Blvd, Lindenhurst, IL 60046-6793.
- What is Stephen Clark's phone number?
- The practice phone number listed in the NPPES registry for Stephen Clark is (847) 356-9300.
- Does Stephen Clark accept Medicare?
- Stephen Clark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Clark's NPI active?
- Yes — Stephen Clark's NPI (1538123385) is active in the NPPES registry as of the last update on 2008-09-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.