Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Francis Shannon, DDS

General Practice Dentistry in Portsmouth, OH · enumerated 2006.

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

National Provider Identifier

1457465544

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Registry record

Entity type Individual (Type 1)

Name Dr. William Francis Shannon

Credential DDS

Sex Male

Practice address 1835 Oakland Avenue, Mercy Medical Plaza Bldg A, Portsmouth, OH, 45662

Phone (740) 354-3500

Fax (740) 353-0818

Enumeration date Aug 18, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 14473 (OH) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Other identifiers

Identifier	Type	State	Issuer
0250973	Medicaid	OH	-

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 do I verify William Shannon's NPI record?

Cross-check NPI 1457465544 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1457465544 active?

Yes, as of the latest NPPES snapshot, NPI 1457465544 is active (record last updated 2007-07-08).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.