Karen Mason MD
About this NPIWhat this record shows.
NPI 1598858086 is registered to Karen Mason MD, a Emergency Medicine practising at 1221 Mercantile Ln in Upper Marlboro, Maryland. Emergency Medicine is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Karen Mason MD has been enumerated in the National Provider Identifier (NPI) registry since 2006.
Your brand here.
Medicare enrollment
This provider holds 6 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
- I20060125000139Emergency MedicineDC
- I20220127002165Emergency MedicineGA
- I20241007003645Emergency MedicineTX
- I20241025001583Emergency MedicineAL
- I20241121000111Emergency MedicineFL
- I20241205000364Emergency MedicineAZ
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 Karen Mason MD accepts. To confirm in-network status with your specific health plan, contact Karen Mason MD directly at (301) 938-3541.
Frequently asked
Yes. NPI 1598858086 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 (301) 938-3541.
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. Karen Mason MD is a Type-1 individual NPI.