Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Brendan John Mccullough, MD

Diagnostic Radiology Physician in Walnut Creek, CA · enumerated 2007.

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

National Provider Identifier

1497954317

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Registry record

Entity type Individual (Type 1)

Name Dr. Brendan John Mccullough

Credential MD

Sex Male

Practice address 2401 Shadelanders Drive, Walnut Creek, CA, 94598

Phone (425) 563-1500

Enumeration date Jul 11, 2007

Last updated in NPPES Jun 4, 2026

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License MEDS7777 (AK) Secondary

2085N0700X Neuroradiology Physician Allopathic & Osteopathic Physicians · License MD60106629 (WA) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License M-12499 (ID) Secondary

2085N0700X Neuroradiology Physician Allopathic & Osteopathic Physicians · License MEDS7777 (AK) Secondary

2085N0700X Neuroradiology Physician Allopathic & Osteopathic Physicians · License M-12499 (ID) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License C172351 (CA) Primary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License MD60106629 (WA) 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
0341837	Other	WA	L&I-SWEDISH RADIA EDMONDS
0341845	Other	WA	L&I-EVERGREEN RADIA
0404021	Other	WA	L&I-SEATTLE RADIOLOGY
1497954317	Medicaid	ID	-
1613891	Medicaid	AK	-
0341836	Other	WA	L&I-RADIA KING COUNTY
2018524	Medicaid	WA	-
0317438	Other	WA	L&I-RADIA REST OF WA

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 Brendan Mccullough?

Brendan Mccullough is registered in NPPES with the primary taxonomy of Diagnostic Radiology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Christopher Krol Diagnostic Radiology Physician · Walnut Creek, CA NPI 1114905007

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-04.