Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Boyd Cooley Ashdown, MD

Q: What is the NPI number for Boyd Ashdown?

The National Provider Identifier (NPI) for Boyd Ashdown is 1841260114, a Type 1 (individual) record in the CMS NPPES registry.

Diagnostic Radiology Physician in Tucson, AZ · enumerated 2006 · practices at Radiology Ltd., LLC.

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

National Provider Identifier

1841260114

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Registry record

Entity type Individual (Type 1)

Name Boyd Cooley Ashdown

Credential MD

Sex Male

Practice address 677 N Wilmot Rd, Tucson, AZ, 85711

Phone (520) 795-2889

Fax (520) 795-6321

Enumeration date Jan 26, 2006

Last updated in NPPES Mar 24, 2020

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 23244 (AZ) Primary

2085N0700X Neuroradiology Physician Allopathic & Osteopathic Physicians · License 23244 (AZ) Secondary

2085D0003X Diagnostic Neuroimaging (Radiology) Physician Allopathic & Osteopathic Physicians · License 23244 (AZ) 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
300053570	Other	AZ	MEDICARE RAILROAD
320143	Medicaid	AZ	-
1841260114	Other	AZ	PHYSICIAN INDIVIDUAL NPI
005472	Other	AZ	GROUP MEDICAID ID
ZWCBBM	Other	AZ	GROUP MEDICARE ID
CS7943	Other	AZ	GROUP MEDICARE RAILROAD ID & PTAN
1841261989	Other	AZ	GROUP NPI

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 Boyd Ashdown?

The National Provider Identifier (NPI) for Boyd Ashdown is 1841260114, a Type 1 (individual) record in the CMS NPPES registry.

Where does Boyd Ashdown practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-03-24.