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

William Brian Dumas, C.R.N.A.

Certified Registered Nurse Anesthetist in Port Huron, MI · enumerated 2006.

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

National Provider Identifier

1235187592

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Registry record

Entity type Individual (Type 1)

Name William Brian Dumas

Credential C.R.N.A.

Sex Male

Practice address Port Huron, MI, 48060

Phone (810) 987-5000

Fax (810) 985-2633

Enumeration date May 5, 2006

Last updated in NPPES Feb 1, 2008

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

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 4704252609 (MI) Primary

CRNA · Certified Registered Nurse Anesthetist: An advanced practice nurse specializing in anesthesia care. About the CRNA credential

Other identifiers

Identifier	Type	State	Issuer
8051830	Medicaid	NC	-
4704252609	Other	MI	LICENSE NUMBER

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 William Dumas's NPI record?

Cross-check NPI 1235187592 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1235187592 active?

Yes, as of the latest NPPES snapshot, NPI 1235187592 is active (record last updated 2008-02-01).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-02-01.