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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Brian L. Mahaffey, MD

Sports Medicine (Family Medicine) Physician in Ballwin, MO · enumerated 2007.

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

National Provider Identifier

1306984505

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Registry record

Entity type Individual (Type 1)
Name Dr. Brian L. Mahaffey
Credential MD
Sex Male
Practice address 15945 Clayton Rd, Suite 210, Ballwin, MO, 63011
Phone (314) 251-1556
Fax (636) 893-1362
Enumeration date Feb 1, 2007
Last updated in NPPES Aug 30, 2022

Taxonomy & licenses

207QS0010X Sports Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License 103424 (MO) 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
208254235 Medicaid MO -
154946001 Medicaid AR -
98585 Other MO AR BLUE SHIELD
P01317472 Other MO RAILROAD MEDICARE

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 NPI 1306984505 active?
Yes, as of the latest NPPES snapshot, NPI 1306984505 is active (record last updated 2022-08-30).
How do I verify Brian Mahaffey's NPI record?
Cross-check NPI 1306984505 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-08-30.