Mary Johnston RN
About this NPIWhat this record shows.
NPI 1659595494 is registered to Mary Johnston RN, a Registered Nurse First Assistant practising at 120 Osler Drive in Naperville, Illinois. Registered Nurse First Assistant is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Mary Johnston RN has been enumerated in the National Provider Identifier (NPI) registry since 2007.
Your brand here.
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 Johnston RN accepts. To confirm in-network status with your specific health plan, contact Mary Johnston RN directly at (630) 428-2229.
Frequently asked
Yes. NPI 1659595494 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Registered Nurse First Assistant 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 (630) 428-2229.
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 Johnston RN is a Type-1 individual NPI.