Zachary Marnoy MD
About this NPIWhat this record shows.
NPI 1194247841 is registered to Zachary Marnoy MD, a Internal Medicine practising at 41 Burlington Mall Rd in Burlington, Massachusetts. Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties. Zachary Marnoy MD has been enumerated in the National Provider Identifier (NPI) registry since 2017.
Medicare enrollment
This provider holds a Medicare enrollment on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20251201003641HospitalistCA
Source: CMS PECOS public enrollment file.
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 Zachary Marnoy MD accepts. To confirm in-network status with your specific health plan, contact Zachary Marnoy MD directly at (781) 744-5100.
Frequently asked
Yes. NPI 1194247841 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties.
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 (781) 744-5100.
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. Zachary Marnoy MD is a Type-1 individual NPI.