Physician Profile
Unclaimed ProfileAbout STEPHAN
Based in Naperville, IL, William Joseph Stephan, MD is listed in the NPI registry under interventional cardiology. William graduated from Tufts University School of Medicine in 1987. William is also listed as specialising in cardiovascular disease.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What is Dr. Stephan's specialty?
Dr. Stephan is an interventional cardiology in Naperville, IL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERVENTIONAL CARDIOLOGY”.
NPI registry
Where can I find Dr. Stephan?
Dr. Stephan is listed at 10 MARTIN AVE STE 200, Naperville, IL 60540. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Stephan?
The number on file is (630) 600-0700. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Stephan?
Dr. Stephan's National Provider Identifier is 1851344931. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Stephan's medical education?
Dr. Stephan attended Tufts University School of Medicine, graduating in 1987. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Stephan have?
Dr. Stephan has 39 years experience. Calculated from a graduation year of 1987, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Stephan known for?
According to Medicare billing data, Dr. Stephan performs procedures including replacement of aortic valve through the skin and femoral artery; reads or performs imaging such as nuclear medicine studies of blood flow in heart muscle at rest and with stress with concurrent ct scan and nuclear medicine studies of heart muscle at rest and with stress and spect; provides treatments such as exercise or drug-induced heart stress test with electrocardiogram with review by physician and routine electrocardiogram using at least 12 leads with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Stephan's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Stephan. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (630) 600-0700
- Email not available
Practice Locations
10 MARTIN AVE STE 200
Naperville, IL 60540
Procedures Most Often Billed to Medicare
6,153 services · 4,641 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Replacement of aortic valve through the skin and femoral artery | Procedure | 33361 |
19 |
| Nuclear medicine studies of blood flow in heart muscle at rest and with stress with concurrent ct scan | Imaging | 78431 |
483 |
| Nuclear medicine studies of heart muscle at rest and with stress and spect | Imaging | 78452 |
184 |
| Nuclear medicine studies of heart muscle at rest and with stress and spect | Imaging | 78452 |
154 |
| Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician | Treatment | 93018 |
681 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
206 |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
197 |
| Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician | Treatment | 93018 |
163 |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
76 |
| Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | Treatment | 99152 |
55 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other interventional cardiology specialists at this location 5
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 4
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 27 related providers in 4 groups
Other interventional cardiology specialists in Naperville 3
Same specialty, same city.
Trained at Tufts University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1987 at Tufts University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Replacement of aortic valve through the skin and femoral artery 8
Providers in IL who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.