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

David Holley, M.D.

Radiation Oncology Physician in Monterey, CA · enumerated 2006.

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

National Provider Identifier

1801981311

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Registry record

Entity type Individual (Type 1)

Name David Holley

Credential M.D.

Sex Male

Practice address Monterey, CA, 93940

Phone (831) 624-5311

Fax (831) 625-4948

Enumeration date Oct 3, 2006

Last updated in NPPES Jul 2, 2014

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

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License A22672 (CA) Primary

2085R0203X Therapeutic Radiology Physician Allopathic & Osteopathic Physicians · License A22672 (CA) Secondary

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
920007318	Other	CA	RAILROAD

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 David Holley?

David Holley is registered in NPPES with the primary taxonomy of Radiation Oncology 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 2014-07-02.