Dr. Mary Zwirb M.D.
About this NPIWhat this record shows.
NPI 1861521957 is registered to Dr. Mary Zwirb M.D., a Geriatric Medicine (Internal Medicine) Physician practising at 201 N Washington St in Falls Church, Virginia. Geriatric Medicine (Internal Medicine) Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. Mary Zwirb M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2007.
Your brand here.
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. Mary Zwirb M.D. accepts. To confirm in-network status with your specific health plan, contact Dr. Mary Zwirb M.D. directly at (703) 237-4000.
Frequently asked
Yes. NPI 1861521957 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Geriatric Medicine (Internal 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 (703) 237-4000.
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. Mary Zwirb M.D. is a Type-1 individual NPI.