Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Leland Johnson, PHD

Clinical Psychologist in Merced, CA · enumerated 2006.

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

National Provider Identifier

1437123445

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Registry record

Entity type Individual (Type 1)

Name Dr. William Leland Johnson

Credential PHD

Sex Male

Practice address 5200 N Lake Rd, Merced, CA, 95343

Phone (209) 228-4266

Enumeration date Feb 15, 2006

Last updated in NPPES Jan 27, 2025

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PY60035461 (WA) Secondary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 31017 (CA) Primary

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

Is NPI 1437123445 active?

Yes, as of the latest NPPES snapshot, NPI 1437123445 is active (record last updated 2025-01-27).

How do I verify William Johnson's NPI record?

Cross-check NPI 1437123445 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Christina Hicks Physician Assistant · Merced, CA NPI 1013072057 Laurel Ealy Clinical Psychologist · Merced, CA NPI 1902023534 University of California, Merced Student Health Services Student Health Clinic/Center · Merced, CA NPI 1376868703 Cindy Arias Clinical Social Worker · Merced, CA NPI 1275889974 Jason Roberts Athletic Trainer · Merced, CA NPI 1760843833 Kevin Vieira Student in an Organized Health Care Education/Training Program · Merced, CA NPI 1164960860 Jeremy Bowen Athletic Trainer · Merced, CA NPI 1457889669 Mary Grace Antonette Abear Clinical Psychologist · Merced, CA NPI 1306356969

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-01-27.