Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. William Clay Cohen, DO

Otolaryngology/Facial Plastic Surgery Physician in Orange, CA · enumerated 2006 · practices at William C Cohen D O Inc.

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

National Provider Identifier

1073545968

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Registry record

Entity type Individual (Type 1)

Name Dr. William Clay Cohen

Credential DO

Sex Male

Practice address Orange, CA, 92868

Phone (714) 628-1313

Fax (714) 628-1319

Enumeration date Jul 7, 2006

Last updated in NPPES Dec 29, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207YX0905X Otolaryngology/Facial Plastic Surgery Physician Allopathic & Osteopathic Physicians · License 20A6844 (CA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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.

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Frequently asked questions

What specialty is William Cohen?

William Cohen is registered in NPPES with the primary taxonomy of Otolaryngology/Facial Plastic Surgery Physician. 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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William C Cohen D O Inc Otolaryngology/Facial Plastic Surgery Physician · Orange, CA NPI 1225178510

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-29.