Mr. Karl Guillen Aas
About this NPIWhat this record shows.
NPI 1154083186 is registered to Mr. Karl Guillen Aas, a Contractor practising at 740 W Calle Alta Loma in Oro Valley, Arizona. Contractor is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Mr. Karl Guillen Aas has been enumerated in the National Provider Identifier (NPI) registry since 2021.
Your brand here.
Secondary identifiers
Additional identifiers this provider has registered with NPPES. Used by medical billers, credentialers, and insurance verifiers to cross-reference claims and enrollments.
Other
- 77614AZ· Issued by 77614AZ
Source: NPPES public registry.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Mr. Karl Guillen Aas accepts. To confirm in-network status with your specific health plan, contact Mr. Karl Guillen Aas directly at (520) 870-8324.
Frequently asked
Yes. NPI 1154083186 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Contractor is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (520) 870-8324.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Mr. Karl Guillen Aas is a Type-1 individual NPI.