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

Douglas Nigel Lock, D.D.S.

General Practice Dentistry in Atascadero, CA · enumerated 2007.

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

National Provider Identifier

1710193628

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Registry record

Entity type Individual (Type 1)

Name Douglas Nigel Lock

Credential D.D.S.

Sex Male

Practice address Atascadero, CA, 93422

Phone (805) 466-3646

Fax (805) 466-2837

Enumeration date May 15, 2007

Last updated in NPPES Jan 22, 2008

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

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 23213 (CA) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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

How do I verify Douglas Lock's NPI record?

Cross-check NPI 1710193628 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1710193628 active?

Yes, as of the latest NPPES snapshot, NPI 1710193628 is active (record last updated 2008-01-22).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-01-22.