Aaron Lessen
Also known as
- Professional nameLessen, Aaron Y.
Source: NPPES public registry.
About this NPIWhat this record shows.
NPI 1457535346 is registered to Aaron Lessen, a Emergency Medicine practising at 501 E Hampden Ave in Englewood, Colorado. Emergency Medicine is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Aaron Lessen has been enumerated in the National Provider Identifier (NPI) registry since 2007.
Secondary identifiers
Additional identifiers this provider has registered with NPPES. Used by medical billers, credentialers, and insurance verifiers to cross-reference claims and enrollments.
Medicaid
- 97485870CO
Other
- P00637700CO· Issued by RAILROAD MEDICARE
Source: NPPES public registry.
Medicare enrollment
This provider holds 2 Medicare enrollments on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20080730000334Emergency MedicineCO
- I20260102001357Emergency MedicineNM
Source: CMS PECOS public enrollment file.
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 Aaron Lessen accepts. To confirm in-network status with your specific health plan, contact Aaron Lessen directly at (303) 788-6911.
Frequently asked
Yes. NPI 1457535346 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Emergency Medicine 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 (303) 788-6911.
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. Aaron Lessen is a Type-1 individual NPI.