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About this NPIWhat this record shows.
NPI 1710212865 is registered to William J Cullen MD LLC, a healthcare organisation classified as "Internal Medicine" and located at 9509 Thornhill Rd in Silver Spring, Maryland. The organisation's authorised official is William Cullen. The organisation has been enumerated in the NPI registry since 2009.
Provider type
Organisation (Type 2)
Status
Active
Enumerated
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The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans William J Cullen MD LLC accepts. To confirm in-network status with your specific health plan, contact William J Cullen MD LLC directly at (301) 332-4817.
Frequently asked
Yes. NPI 1710212865 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) 332-4817.
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. William J Cullen MD LLC is a Type-2 organisational NPI.
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