Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jon M Dahl, OD

Optometrist in Mount Vernon, WA · enumerated 2005.

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

National Provider Identifier

1477549616

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Registry record

Entity type Individual (Type 1)

Name Jon M Dahl

Credential OD

Sex Male

Practice address 1400 E Kincaid St, Mount Vernon, WA, 98274

Phone (360) 428-2500

Fax (360) 428-6485

Enumeration date Sep 22, 2005

Last updated in NPPES Nov 15, 2011

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OD00001122 (WA) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
2081404	Medicaid	WA	-

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.

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Frequently asked questions

How do I verify Jon Dahl's NPI record?

Cross-check NPI 1477549616 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1477549616 active?

Yes, as of the latest NPPES snapshot, NPI 1477549616 is active (record last updated 2011-11-15).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-11-15.