Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Exclusive Diagnostic Services

Electrodiagnostic Medicine Physician in San Fernando, CA · enumerated 2019 · authorized official Frank Maffei, Owner.

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

National Provider Identifier

1144782251

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Registry record

Entity type Organization (Type 2)

Legal business name Exclusive Diagnostic Services

Practice address 670 San Fernando Mission Blvd Ste D, San Fernando, CA, 91340

Phone (818) 483-0133

Fax (888) 339-6505

Enumeration date Apr 5, 2019

Last updated in NPPES Apr 5, 2019

Taxonomy & classification

204R00000X Electrodiagnostic Medicine Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Frank Maffei

Title Owner

Phone (818) 396-8216

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2019-04-05. Verify at npiregistry.cms.hhs.gov.

Where is Exclusive Diagnostic Services located?

The practice location on file with NPPES is in San Fernando, CA.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-05.