Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Nathan A Carden, DO

Anesthesiology Physician in Portland, OR · enumerated 2006.

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

National Provider Identifier

1558340794

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Registry record

Entity type Individual (Type 1)

Name Dr. Nathan A Carden

Credential DO

Sex Male

Practice address 707 Sw Washington St Ste 700, Portland, OR, 97205

Phone (503) 299-9906

Fax (503) 225-9002

Enumeration date Jan 16, 2006

Last updated in NPPES Oct 10, 2018

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 43591 (CO) Secondary

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License DO186090 (OR) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
00172731	Medicaid	CO	-
500738408	Medicaid	OR	-
R200340	Other	OR	MEDICARE

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

What specialty is Nathan Carden?

Nathan Carden is registered in NPPES with the primary taxonomy of Anesthesiology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-10-10.