Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gregory C Greaney, M.D.

Colon & Rectal Surgery Physician in Santa Barbara, CA · enumerated 2006.

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

National Provider Identifier

1609984137

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Registry record

Entity type Individual (Type 1)

Name Gregory C Greaney

Credential M.D.

Sex Male

Practice address 317 W Pueblo St, Santa Barbara, CA, 93105

Phone (805) 681-1761

Fax (805) 681-1768

Enumeration date Aug 25, 2006

Last updated in NPPES Nov 10, 2010

Taxonomy & licenses

208C00000X Colon & Rectal Surgery Physician Allopathic & Osteopathic Physicians · License G47697 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
00G476970	Medicaid	CA	-

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 Gregory Greaney?

Gregory Greaney is registered in NPPES with the primary taxonomy of Colon & Rectal Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-11-10.