Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Greg A Warren, DO

Nephrology Physician in Elizabeth City, NC · enumerated 2006 · practices at Albemarle Nephrology Pllc.

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

National Provider Identifier

1245270131

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Registry record

Entity type Individual (Type 1)

Name Greg A Warren

Credential DO

Sex Male

Practice address 206 Hastings Lane, Elizabeth City, NC, 27909

Phone (252) 335-1083

Fax (252) 335-4030

Enumeration date Jun 8, 2006

Last updated in NPPES Oct 22, 2007

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians 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
142ER	Other	NC	BLUE CROSS BLUE SHIELD
5903364	Medicaid	NC	-
P00391176	Other	NC	RAIL ROAD 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

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.

What specialty is Greg Warren?

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

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Albemarle Nephrology Pllc Nephrology Physician · Elizabeth City, NC NPI 1861555799

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-22.