NPI Portal NPI Lookup & Verification

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

Mark Stephen Duhamel, E.A.M.P.

Acupuncturist in Port Orchard, WA · enumerated 2006 · practices at Many Paths Acupuncture, PC.

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

National Provider Identifier

1346319712

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Registry record

Entity type Individual (Type 1)
Name Mark Stephen Duhamel
Credential E.A.M.P.
Sex Male
Practice address Port Orchard, WA, 98366
Phone (360) 621-8310
Fax (866) 313-4004
Enumeration date Nov 7, 2006
Last updated in NPPES Feb 13, 2020

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

Taxonomy & licenses

171100000X Acupuncturist Other Service Providers · License AC00002491 (WA) Primary

Other identifiers

Identifier Type State Issuer
11618016 Other WA CAQH

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 Mark Duhamel's NPI record?
Cross-check NPI 1346319712 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1346319712 active?
Yes, as of the latest NPPES snapshot, NPI 1346319712 is active (record last updated 2020-02-13).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-02-13.