William G. Deubert, PSY.D.

William G. Deubert is a Clinical Psychologist provider (Psychologist) practicing in Mc Lean, VA, registered in the NPPES registry with NPI 1366509218 since 2007. The credential PSYD stands for Doctor of Psychology.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1366509218
Entity type	Individual (Type 1)
Name	William G. Deubert
Credential	PSY.D.
Sex	Male
Practice address	Mc Lean, VA, 22101
Phone	7032688556
Enumeration date	2007-01-02
Last updated in NPPES	2010-12-07

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
103TC0700X	Clinical Psychologist	Primary	0810002990	VA

PSYD — Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD credential

Copy-ready billing details

Provider: William Deubert, PSY.D.
NPI: 1366509218
Taxonomy: 103TC0700X (Clinical Psychologist)
Address: Mc Lean, VA, 22101

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1457418519	Maia Deubert	Individual	Clinical Psychologist	Mc Lean, VA
1720264625	Rosalind Stern	Individual	School Psychologist	Mc Lean, VA
1255879045	Beth Gouse	Individual	Psychologist	Mc Lean, VA

Verify this record

Cross-check NPI 1366509218 against the authoritative CMS record: view William G. Deubert on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

What specialty is William Deubert?

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

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.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2010-12-07.