Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. William Severe Day Jr., LPC

Psychologist in Warrenton, VA · enumerated 2006 · practices at Fauquier Counseling Center.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1083621551

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mr. William Severe Day Jr.

Credential LPC

Sex Male

Practice address 54 E Lee St, Warrenton, VA, 20186

Phone (540) 347-0613

Fax (540) 347-0768

Enumeration date Aug 1, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License 0701002491 (VA) Primary

LPC · Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy. About the LPC credential

Other identifiers

Identifier	Type	State	Issuer
07260010	Other	-	CARE FIRST
113276	Other	-	ANTHEM HEALTHKEEPERS
88134	Other	VA	QUALITY CHOICE
52068	Other	-	MAMSI

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is William Day?

William Day is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.