Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Lester James Willis, DNP, PMHNP-BC

Psychiatric/Mental Health Nurse Practitioner in Atascadero, CA · enumerated 2019.

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

National Provider Identifier

1306482344

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Registry record

Entity type Individual (Type 1)

Name Lester James Willis

Credential DNP, PMHNP-BC

Sex Male

Practice address 10333 El Camino Real, Atascadero, CA, 93422

Phone (805) 468-2000

Enumeration date Nov 25, 2019

Last updated in NPPES Dec 3, 2019

Taxonomy & licenses

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95011983 (CA) Primary

DNP · Doctor of Nursing Practice: A clinical doctorate for advanced practice nurses. About the DNP 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

What specialty is Lester Willis?

Lester Willis is registered in NPPES with the primary taxonomy of Psychiatric/Mental Health Nurse Practitioner. 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-12-03.