Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Brian M. Frank, AT

Specialist in Rancho Santa Margarita, CA · enumerated 2007.

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

National Provider Identifier

1275734170

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Registry record

Entity type Individual (Type 1)

Name Brian M. Frank

Credential AT

Sex Male

Practice address 30085 Comercio, Rancho Santa Margarita, CA, 92688

Phone (949) 766-8535

Fax (949) 766-8540

Enumeration date May 29, 2007

Last updated in NPPES Feb 29, 2012

Taxonomy & licenses

174400000X Specialist Other Service Providers · License AT4141 (CA) Primary

Other identifiers

Identifier	Type	State	Issuer
AT4141	Other	CA	PHYSICAL THERAPY ASSIST

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 specialty is Brian Frank?

Brian Frank is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-02-29.