Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

S. Mack Brown Od Optometric Corporation

Q: What is the NPI number for S. Mack Brown Od Optometric Corporation?

The NPI for S. Mack Brown Od Optometric Corporation is 1679989594, a Type 2 (organization) record in the CMS NPPES registry.

Optometrist in Ukiah, CA · enumerated 2014 · authorized official S. Mack Brown, President.

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

National Provider Identifier

1679989594

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Registry record

Entity type Organization (Type 2)

Legal business name S. Mack Brown Od Optometric Corporation

Practice address 716 S Dora St, Ukiah, CA, 95482

Phone (707) 462-5361

Fax (707) 462-2457

Enumeration date Jul 11, 2014

Last updated in NPPES Jul 11, 2014

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 4748T (CA) Primary

Authorized official

Name S. Mack Brown

Title President

Phone (707) 462-5361

Other identifiers

Identifier	Type	State	Issuer
1679628994	Other	CA	NPI TYPE 1 IDENTIFIER

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 is the NPI number for S. Mack Brown Od Optometric Corporation?

The NPI for S. Mack Brown Od Optometric Corporation is 1679989594, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for S. Mack Brown Od Optometric Corporation?

NPPES lists S. Mack Brown (President) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-07-11.