NPPES file of Aug 9, 2026

Nicholas Willius, DO

Anesthesiology Physician · Phoenix, AZ

Nicholas Willius, DO is an anesthesiology physician with a practice address in Phoenix, Arizona, and NPI 1306251343, issued on Jun 28, 2014. Check the license (Arizona 007556, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1306251343
Name
Nicholas Willius
Credential
DO
Primary taxonomy
Anesthesiology Physician 207L00000X
License numbers
007556 AZ
R3657 KY
Self-reported in NPPES; status is on the state search
Practice location
1850 N Central Ave, Phoenix, AZ 85004
Phone
(602) 262-8900
Enumerated
Jun 28, 2014
Record last updated
Jun 19, 2025
Fax
(602) 262-8890
Medicare enrollment
Enrolled (PECOS I20180814000936); accepts Medicare assignment
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 anesthesiology physician records → All 1,473 in Arizona → Look up another NPI →

Also registered at 1850 N Central Ave

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

  1. Michael Adkins, MDAnesthesiology Physician1700858388
  2. John Ammon, MDAnesthesiology Physician1770563108
  3. Leslie Andes, MDAnesthesiology Physician1699745497
  4. Kerry Ando, MDAnesthesiology Physician1881668465
  5. Michael Andrews, MDAnesthesiology Physician1427038124
  6. Carlene AnolickCertified Registered Nurse Anesthetist1629424593

Verify Nicholas Willius in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license 007556    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 Arizona 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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Bills Medicare through one group practice

  1. Valley Anesthesiology Consultants IncMesa, AZ

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

Nicholas Willius among 1,473 anesthesiology physician records in Arizona

Nicholas Willius, DO is one of 1,473 anesthesiology physician records with a practice address in Arizona. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 79% of them.

  • NPI issued2014 · 79% of these records are older, 19% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 67% of these records are
  • Graduated2014 · median 2003 among the 984 with a school on file
  • Record last updated2025 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

602 anesthesiology physician records list a practice address in Phoenix

They are 602 of the 31,399 NPPES records with a practice address in Phoenix, and 1,473 anesthesiology physician records in Arizona.

All 1,473 in Arizona → Every provider in Phoenix → Anesthesiology Physician nationwide →

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Thomas Beer, M.D.Phoenix, AZ 850041376520437
  2. Stephan Cardon, MDPhoenix, AZ 850041811977515
  3. John Curtis, MDPhoenix, AZ 850041740260454
  4. Michael Dupuy, MDPhoenix, AZ 850041275513970
  5. Elliott Farber, M.D.Phoenix, AZ 850041588653745
  6. Jonathan Feuer, MDPhoenix, AZ 850041700868783
  7. Ralph Gualtieri, MDPhoenix, AZ 850041083694780
  8. David Heaton, M.D.Phoenix, AZ 850041598742116

Common questions

What is Nicholas Willius, DO's NPI number?

Nicholas Willius, DO's National Provider Identifier (NPI) is 1306251343, issued on Jun 28, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Nicholas Willius, DO located?

The NPPES record lists a practice address at 1850 N Central Ave, Phoenix, AZ, 85004. Phone: (602) 262-8900. Providers update this record themselves, so call before visiting.

How can I verify Nicholas Willius, DO's license?

NPPES lists Arizona license number 007556, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.