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J Mathieu Massicotte, MD

Urology Physician in Chelmsford, MA · enumerated 2006 · practices at Merrimack Urology Assoc, PC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1336119957

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Registry record

Entity type Individual (Type 1)
Name J Mathieu Massicotte
Credential MD
Sex Male
Practice address 31 Village Sq, Chelmsford, MA, 01824
Phone (978) 256-9507
Enumeration date Jan 25, 2006
Last updated in NPPES Jan 27, 2012

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 79361 (MA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
3182096 Medicaid MA -

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where does J Massicotte practice?
The practice location on file with NPPES is in Chelmsford, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for J Massicotte?
The National Provider Identifier (NPI) for J Massicotte is 1336119957, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-01-27.