Mary Margrethe Lumor Arnp, DNP
About this NPIWhat this record shows.
NPI 1124825674 is registered to Mary Margrethe Lumor Arnp, DNP, a Nurse Practitioner practising at 1221 Madison St Ste 900 in Seattle, Washington. Nurse Practitioner is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Mary Margrethe Lumor Arnp, DNP has been enumerated in the National Provider Identifier (NPI) registry since 2025.
Your brand here.
Medicare enrollment
This provider holds a Medicare enrollment 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
- I20251224001091Nurse PractitionerWA
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 Mary Margrethe Lumor Arnp, DNP accepts. To confirm in-network status with your specific health plan, contact Mary Margrethe Lumor Arnp, DNP directly at (206) 215-6800.
Frequently asked
Yes. NPI 1124825674 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Nurse Practitioner 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 (206) 215-6800.
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. Mary Margrethe Lumor Arnp, DNP is a Type-1 individual NPI.