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

Dr. Carl R. Marcus, O.D.

Q: What is the NPI number for Carl Marcus?

The National Provider Identifier (NPI) for Carl Marcus is 1366656894, a Type 1 (individual) record in the CMS NPPES registry.

Optometrist in Auburn, WA · enumerated 2007.

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

National Provider Identifier

1366656894

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Registry record

Entity type Individual (Type 1)

Name Dr. Carl R. Marcus

Credential O.D.

Sex Male

Practice address Auburn, WA, 98001

Phone (253) 735-6548

Fax (253) 735-6548

Enumeration date May 10, 2007

Last updated in NPPES Jan 4, 2011

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

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OD00000853 (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
93422275060001	Other	WA	PREMERA BLUE CROSS NATACT
WA0514	Other	WA	NORTHWEST BENEFIT NETWORK
MA0876	Other	WA	REGENCE BLUE SHIELD
2567402	Medicaid	WA	-
911348	Other	WA	EYEMED
227506100000	Other	WA	PREMERA BLUE CROSS

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

What is the NPI number for Carl Marcus?

The National Provider Identifier (NPI) for Carl Marcus is 1366656894, a Type 1 (individual) record in the CMS NPPES registry.

Where does Carl Marcus practice?

The practice location on file with NPPES is in Auburn, WA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-01-04.