Nathan Alley-Byrd MD
About this NPIWhat this record shows.
NPI 1558924274 is registered to Nathan Alley-Byrd MD, a Emergency Medicine practising at Navy Medical Center San Diego 34800 Bob Wilson Drive in San Diego, California. Emergency Medicine is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Nathan Alley-Byrd MD has been enumerated in the National Provider Identifier (NPI) registry since 2019.
Beyond the registryWhat this record adds.
It is enrolled in Medicare, linking to 1 PECOS enrollment record (with a public Medicare Enrollment ID) sourced from CMS, which the NPPES registry does not list. Within the directory it is one of 8,546 Emergency Medicine providers on file in California.
Source: CMS NPPES and PECOS public files. snapshot, refreshed monthly.
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
- I20251103000498Emergency MedicineIL
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 Nathan Alley-Byrd MD accepts. To confirm in-network status with your specific health plan, contact Nathan Alley-Byrd MD directly at (619) 532-6400.
Frequently asked
Yes. NPI 1558924274 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 (619) 532-6400.
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. Nathan Alley-Byrd MD is a Type-1 individual NPI.
As of the latest monthly CMS NPPES snapshot, 8,546 Emergency Medicine providers are registered in California, and Nathan Alley-Byrd MD is one of them. The figure refreshes each month from the federal source.