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

Dr. John K Monagle, N.D.

Naturopath in Larkspur, CA · enumerated 2006.

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

National Provider Identifier

1538189097

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Registry record

Entity type Individual (Type 1)

Name Dr. John K Monagle

Credential N.D.

Sex Male

Practice address Larkspur, CA, 94939

Phone (415) 314-6051

Enumeration date Jul 20, 2006

Last updated in NPPES Mar 21, 2008

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

Taxonomy & licenses

175F00000X Naturopath Other Service Providers · License 1271 (OR) Secondary

175F00000X Naturopath Other Service Providers · License 282 (CA) Primary

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 1538189097 active?

Yes, as of the latest NPPES snapshot, NPI 1538189097 is active (record last updated 2008-03-21).

How do I verify John Monagle's NPI record?

Cross-check NPI 1538189097 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-03-21.