Registry data as of Aug 27, 2026

William Alonso Arias

Anesthesiology Physician · Las Vegas, NV

William Alonso Arias is an anesthesiology physician with a practice address in Las Vegas, Nevada, and NPI 1275822702, issued on Apr 5, 2011. Check the license (Nevada 16233, as entered in NPPES) on the Nevada State Board of Medical Examiners; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, loaded Aug 27, 2026 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1275822702
Name
William Alonso Arias
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
16233 NV
Self-reported in NPPES; status is on the state search
Practice location
2136 E Desert Inn RD Ste A, Las Vegas, NV 89169
Phone
(917) 684-8221
Enumerated
Apr 5, 2011
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify William Alonso Arias in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNevada State Board of Medical Examiners
    Search for license 16233    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 Nevada 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.

Anesthesiology Physician providers in Nevada

There are 530 anesthesiology physician records in Nevada. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 530 in Nevada → Every provider in Las Vegas →

Other anesthesiology physician records in Nevada

  1. Nnamdi AchebeLas Vegas, NV1558943340
  2. Michael AdamsLas Vegas, NV1811130271
  3. Edwin Adolfo, MDLas Vegas, NV1477536571
  4. Christopher Ahn, M.D.Las Vegas, NV1316138126
  5. Sabrina Akhtar, M.D.Nellis Afb, NV1720215460
  6. Darlicia Alexander, MDLas Vegas, NV1104806355
  7. Ruben Alexander, MDLas Vegas, NV1790078848
  8. Chirag Amin, D.O.Henderson, NV1760723035
  9. Rehan Amir, MDLas Vegas, NV1588607220
  10. Nicholas Anast, M.D.Reno, NV1477877173

Common questions

What is William Alonso Arias's NPI number?

William Alonso Arias's National Provider Identifier (NPI) is 1275822702, issued on Apr 5, 2011. An NPI identifies a provider in billing; it is not a license.

Where is William Alonso Arias located?

The NPPES record lists a practice address at 2136 E Desert Inn RD Ste A, Las Vegas, NV, 89169. Phone: (917) 684-8221. Providers update this record themselves, so call before visiting.

How can I verify William Alonso Arias's license?

NPPES lists Nevada license number 16233, as entered by the provider. Search the Nevada State Board of Medical Examiners at https://medboard.nv.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), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.