NPPES file of Aug 9, 2026

Karl Louis Guillen, AAS

Contractor · Oro Valley, AZ

Karl Louis Guillen, AAS is a contractor with a practice address in Oro Valley, Arizona, and NPI 1154083186, issued on Oct 7, 2021. Check the license with the Arizona board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1154083186
Name
Karl Louis Guillen
Credential
AAS
Primary taxonomy
Contractor 171W00000X
Practice location
740 W Calle Alta Loma, Oro Valley, AZ 85737
Phone
(520) 870-8324
Enumerated
Oct 7, 2021
Record last updated
Oct 7, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(520) 297-5355
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 Karl Louis Guillen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Arizona board licenses this professionCheck 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
Find 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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Contractor providers in Arizona

There are 323 contractor records in Arizona. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 323 in Arizona → Every provider in Oro Valley →

Other contractor records in Arizona

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  2. Qahtan AbdulameerGlendale, AZ1033800628
  3. Layla AbujabelPhoenix, AZ1558778670
  4. Virginia AdamsPhoenix, AZ1922859131
  5. Guadalupe AguirreTucson, AZ1942752530
  6. Brian AishTucson, AZ1205988771
  7. Saad AliGlendale, AZ1316785736
  8. Brandon AliceCave Creek, AZ1508225566
  9. Melissa AndersonTucson, AZ1306997317
  10. Rochelle AndersonPhoenix, AZ1588094445

Common questions

What is Karl Louis Guillen, AAS's NPI number?

Karl Louis Guillen, AAS's National Provider Identifier (NPI) is 1154083186, issued on Oct 7, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Karl Louis Guillen, AAS located?

The NPPES record lists a practice address at 740 W Calle Alta Loma, Oro Valley, AZ, 85737. Phone: (520) 870-8324. Providers update this record themselves, so call before visiting.

How can I verify Karl Louis Guillen, AAS's license?

Search the Arizona board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.