Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Darrin Alan Worthington, AU.D.

Audiologist in Lake Forest, IL · enumerated 2007.

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

National Provider Identifier

1104006584

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Registry record

Entity type Individual (Type 1)

Name Dr. Darrin Alan Worthington

Credential AU.D.

Sex Male

Practice address 660 N Westmoreland Rd, 800 Building, Lake Forest, IL, 60045

Phone (847) 535-6554

Fax (847) 535-7809

Enumeration date Nov 14, 2007

Last updated in NPPES Nov 14, 2007

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License 1470001260 (IL) Primary

AUD · Doctor of Audiology: A licensed audiologist diagnosing and treating hearing and balance disorders. About the AUD credential

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 Darrin Worthington?

Darrin Worthington is registered in NPPES with the primary taxonomy of Audiologist. 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 2007-11-14.