NPI Portal NPI Lookup & Verification

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

Craig R Cassidy, DO

Ophthalmology Physician in Mesa, AZ · enumerated 2006 · practices at Valley Outpatient Surgical Center Inc.

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

National Provider Identifier

1063480119

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Registry record

Entity type Individual (Type 1)
Name Craig R Cassidy
Credential DO
Sex Male
Practice address Mesa, AZ, 85201
Phone (480) 833-0014
Fax (480) 835-6821
Enumeration date Mar 14, 2006
Last updated in NPPES Jul 24, 2008

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

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 1769 (AZ) 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

Other identifiers

Identifier Type State Issuer
237314 Medicaid AZ —

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 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.
What specialty is Craig Cassidy?
Craig Cassidy is registered in NPPES with the primary taxonomy of Ophthalmology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-24.