Louis Macareo M.D., J.D., M.P.H.
About this NPIWhat this record shows.
NPI 1881891323 is registered to Louis Macareo M.D., J.D., M.P.H., a Internal Medicine practising at Wrair Division Of Experimental Therapeutics, 503 Robert Grant Ave. in Silver Spring, Maryland. Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties. Louis Macareo M.D., J.D., M.P.H. has been enumerated in the National Provider Identifier (NPI) registry since 2007.
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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 Louis Macareo M.D., J.D., M.P.H. accepts. To confirm in-network status with your specific health plan, contact Louis Macareo M.D., J.D., M.P.H. directly at (301) 319-9412.
Frequently asked
Yes. NPI 1881891323 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 (301) 319-9412.
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. Louis Macareo M.D., J.D., M.P.H. is a Type-1 individual NPI.