NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Dale Overfield, MD

Neurology Physician in Tacoma, WA · enumerated 2005.

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

National Provider Identifier

1952308074

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name William Dale Overfield
Credential MD
Sex Male
Practice address 915 6th Ave, Suite 200, Tacoma, WA, 98405
Phone (253) 403-7299
Fax (253) 403-7298
Enumeration date Jul 5, 2005
Last updated in NPPES Mar 7, 2023

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 12650 (WA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
8192205 Medicaid WA -

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 William Overfield?
William Overfield is registered in NPPES with the primary taxonomy of Neurology 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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.