Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Martin Reuss IV, DDS

General Practice Dentistry in Anderson, CA · enumerated 2009.

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

National Provider Identifier

1881821064

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Registry record

Entity type Individual (Type 1)

Name Dr. William Martin Reuss IV

Credential DDS

Sex Male

Practice address 1930 North Barney St., Anderson, CA, 96007

Phone (530) 365-4581

Fax (530) 365-4871

Enumeration date Jun 16, 2009

Last updated in NPPES Jun 16, 2009

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 46519 (CA) 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
46519	Other	CA	STATE LICENSE NUMBER

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 Reuss's NPI record?

Cross-check NPI 1881821064 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1881821064 active?

Yes, as of the latest NPPES snapshot, NPI 1881821064 is active (record last updated 2009-06-16).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-06-16.