Sebastian Niezen
About this NPIWhat this record shows.
NPI 1265162291 is registered to Sebastian Niezen, a Gastroenterology practising at 330 Brookline Ave in Boston, Massachusetts. Gastroenterology is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Sebastian Niezen has been enumerated in the National Provider Identifier (NPI) registry since 2022.
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 Sebastian Niezen accepts. To confirm in-network status with your specific health plan, contact Sebastian Niezen directly at (617) 480-3735.
Frequently asked
Yes. NPI 1265162291 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Gastroenterology 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 (617) 480-3735.
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. Sebastian Niezen is a Type-1 individual NPI.