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About this NPIWhat this record shows.
NPI 1912966011 is registered to Alden Gagnon M.D., a Hematology (Internal Medicine) Physician practising at 23 Village Sq in Chelmsford, Massachusetts. Hematology (Internal Medicine) Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Alden Gagnon M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2006.
Provider type
Individual (Type 1)
Status
Active
Enumerated
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Additional identifiers this provider has registered with NPPES. Used by medical billers, credentialers, and insurance verifiers to cross-reference claims and enrollments.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Alden Gagnon M.D. accepts. To confirm in-network status with your specific health plan, contact Alden Gagnon M.D. directly at (978) 256-4121.
Frequently asked
Yes. NPI 1912966011 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Hematology (Internal Medicine) Physician 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) 256-4121.
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. Alden Gagnon M.D. is a Type-1 individual NPI.
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