Physician Profile
Unclaimed ProfileAbout WILLIS
Based in Denville, NJ, William John Willis, M.D. is listed in the NPI registry under anesthesiology. William is also listed as specializing in specialist. According to Medicare claims data, William cared for 316 Medicare patients across 321 services.
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 kind of doctor is Dr. Willis?
Dr. Willis is an anesthesiology in Denville, NJ. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “ANESTHESIOLOGY”.
NPI registry
What is Dr. Willis's address?
Dr. Willis is listed at 3130 ROUTE 10, Denville, NJ 07834. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Willis?
The number on file is (973) 442-9980. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Willis's NPI number?
Dr. Willis's National Provider Identifier is 1700882180. 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
Where did Dr. Willis train?
Dr. Willis attended Other, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Willis been practicing?
Dr. Willis has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Willis perform?
According to Medicare billing data, Dr. Willis provides treatments such as anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope and anesthesia for x-ray or radiation therapy. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Willis confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Willis. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (973) 442-9980
- Email not available
Practice Locations
3130 ROUTE 10
Denville, NJ 07834
Procedures Most Often Billed to Medicare
321 services · 316 patients · 13 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | Anaesthesia | 00731 |
77 |
| Anesthesia for x-ray or radiation therapy | Anaesthesia | 01922 |
54 |
| Anesthesia for other procedure on large bowel using an endoscope | Anaesthesia | 00811 |
30 |
| Anesthesia for procedure to correct abnormal heart rhythm | Anaesthesia | 00410 |
27 |
| Anesthesia for other procedure on urinary system through urethra | Anaesthesia | 00910 |
23 |
| Anesthesia for other repair of lower abdomen hernia (1 year or older) | Anaesthesia | 00830 |
16 |
| Anesthesia for procedure on small and large bowel using an endoscope | Anaesthesia | 00813 |
16 |
| Anesthesia for exam of colon using an endoscope | Anaesthesia | 00812 |
15 |
| Anesthesia for other procedure on upper abdomen | Anaesthesia | 00790 |
15 |
| Anesthesia for nerve block and injection procedure, prone position | Anaesthesia | 01992 |
14 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
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.
Other anesthesiology specialists in Denville 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1988 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 8
Providers in NJ 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.