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About this NPIWhat this record shows.
NPI 1417961756 is registered to Dr. Sarah Sirbasku Williams PH.D., a Clinical Psychologist practising at 1604 Spring Hill Rd, Suite 300 in Vienna, Virginia. Clinical Psychologist is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. Sarah Sirbasku Williams PH.D. has been enumerated in the National Provider Identifier (NPI) registry since 2006.
Provider type
Individual (Type 1)
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 Dr. Sarah Sirbasku Williams PH.D. accepts. To confirm in-network status with your specific health plan, contact Dr. Sarah Sirbasku Williams PH.D. directly at (571) 766-8717.
Frequently asked
Yes. NPI 1417961756 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Clinical Psychologist 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) 766-8717.
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. Sarah Sirbasku Williams PH.D. is a Type-1 individual NPI.
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