Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. William Picker, PH.D.

Clinical Psychologist in Sleepy Hollow, NY · enumerated 2006.

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

National Provider Identifier

1245260405

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. William Picker

Credential PH.D.

Sex Male

Practice address Sleepy Hollow, NY, 10591

Phone (914) 524-0042

Fax (914) 244-3494

Enumeration date Jul 4, 2006

Last updated in NPPES Aug 3, 2008

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

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 8832 (NY) Primary

103TC2200X Clinical Child & Adolescent Psychologist Behavioral Health & Social Service Providers · License 8832 (NY) Secondary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

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

Where does William Picker practice?

The practice location on file with NPPES is in Sleepy Hollow, NY. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for William Picker?

The National Provider Identifier (NPI) for William Picker is 1245260405, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-08-03.