William John Willis, M.D.
Anesthesiology Physician · Denville, NJ
William John Willis, M.D. is an anesthesiology physician with a practice address in Denville, New Jersey, and NPI 1700882180, issued on Jun 22, 2005. Check the license (New Jersey 25MA05786500, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- William John Willis
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License numbers
- 25MA05786500 NJ
MA57865 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 3130 Route 10, Denville, NJ 07834
- Phone
- (973) 442-9980
- Enumerated
- Jun 22, 2005
- Record last updated
- Dec 16, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20050120000811); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 3130 Route 10
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melanie Giordano, NPNurse Practitioner1831163138
Verify William John Willis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA05786500Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average anesthesiology physician in 2024
11 Medicare Part D claims, against an average of 402 among the 4,319 providers of this specialty who prescribed in Part D.
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.
The practice group's MIPS final score for 2023 (Medicare payment program): 46.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $154.52
1 payment: food and beverage; the largest payer was Medtronic, Inc. The 17,774 providers of this specialty with any payment received $669.59 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Anesthesia Associates OF Morristown PANewton, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
23 anesthesiology physician records list a practice address in Denville
They are 23 of the 807 NPPES records with a practice address in Denville, and 1,714 anesthesiology physician records in New Jersey.
All 23 in Denville → All 1,714 in New Jersey → Every provider in Denville →
Other anesthesiology physician records in New Jersey
- Denise Abdulahad, MDNeptune, NJ1962080523
- Eric Aberbach, M.D.Pompton Plains, NJ1679574982
- Arkadiy Abkin, MDMorristown, NJ1316928666
- Jacob Abraham, M.D.Ridgewood, NJ1437310240
- Grace Abramian, M. D.Camden, NJ1689089641
- Jonathan Abrams, MDSummit, NJ1780663054
- Kenneth Abrams, MD, MBAPomona, NJ1306881644
- Lawrence Abrams, MDHackensack, NJ1356396485
- Martini Absin, M.D.Egg Harbor Township, NJ1518960400
- Abir Adam, MDElizabeth, NJ1326018003
Common questions
What is William John Willis, M.D.'s NPI number?
William John Willis, M.D.'s National Provider Identifier (NPI) is 1700882180, issued on Jun 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William John Willis, M.D. located?
The NPPES record lists a practice address at 3130 Route 10, Denville, NJ, 07834. Phone: (973) 442-9980. Providers update this record themselves, so call before visiting.
How can I verify William John Willis, M.D.'s license?
NPPES lists New Jersey license number 25MA05786500, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William John Willis, M.D. prescribe under Medicare Part D?
In 2024, William John Willis, M.D. had 11 Medicare Part D claims; the average among anesthesiology physician prescribers was 402. Part D covers Medicare prescriptions only.
What is William John Willis, M.D.'s MIPS final score?
The 2023 MIPS final score is 46.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.