Cathy Sizer NP
About this NPIWhat this record shows.
NPI 1467449512 is registered to Cathy Sizer NP, a Nurse Practitioner, Pediatrics practising at 133 Littleton Rd, Suite 101 in Westford, Massachusetts. Nurse Practitioner, Pediatrics is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Cathy Sizer NP has been enumerated in the National Provider Identifier (NPI) registry since 2005.
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 Cathy Sizer NP accepts. To confirm in-network status with your specific health plan, contact Cathy Sizer NP directly at (978) 577-0437.
Frequently asked
Yes. NPI 1467449512 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, Pediatrics 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 (978) 577-0437.
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. Cathy Sizer NP is a Type-1 individual NPI.