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Mr. Brian W Millhollon, MD

Allergy & Immunology Physician in Phoenix, AZ · enumerated 2006.

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

National Provider Identifier

1841212693

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Registry record

Entity type Individual (Type 1)
Name Mr. Brian W Millhollon
Credential MD
Sex Male
Practice address 16611 S 40th Street, Suite 170, Phoenix, AZ, 85048
Phone (480) 705-8844
Fax (480) 705-8838
Enumeration date Jul 24, 2006
Last updated in NPPES Mar 7, 2023

Taxonomy & licenses

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License 21604 (AZ) 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
21604 Other AZ STATE LICENSE

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

Where does Brian Millhollon practice?
The practice location on file with NPPES is in Phoenix, AZ. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Brian Millhollon?
The National Provider Identifier (NPI) for Brian Millhollon is 1841212693, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.