Dr. Thomas Greig MD, Mph, Msist
About this NPIWhat this record shows.
NPI 1104788017 is registered to Dr. Thomas Greig MD, Mph, Msist, a Aerospace Medicine Physician practising at 11711 Lariat Ln in Oakton, Virginia. Aerospace Medicine Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. Thomas Greig MD, Mph, Msist has been enumerated in the National Provider Identifier (NPI) registry since 2025.
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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 Dr. Thomas Greig MD, Mph, Msist accepts. To confirm in-network status with your specific health plan, contact Dr. Thomas Greig MD, Mph, Msist directly at (571) 265-9340.
Frequently asked
Yes. NPI 1104788017 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Aerospace 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 (571) 265-9340.
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. Dr. Thomas Greig MD, Mph, Msist is a Type-1 individual NPI.