Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Gregory B. Mcmahill, Od, An Optometric Corporation

Optometrist in Palm Desert, CA · enumerated 2008 · authorized official Gregory Mcmahill, President.

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

National Provider Identifier

1336318807

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Registry record

Entity type Organization (Type 2)

Legal business name Gregory B. Mcmahill, Od, An Optometric Corporation

Practice address 72800 Dinah Shore Dr, Palm Desert, CA, 92211

Phone (760) 202-0100

Fax (760) 202-0121

Enumeration date Feb 28, 2008

Last updated in NPPES Sep 23, 2011

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License OPT9489TPA (CA) Primary

Authorized official

Name Gregory Mcmahill

Title President

Phone (760) 202-0100

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

Who is the authorized official for Gregory B. Mcmahill, Od, An Optometric Corporation?

NPPES lists Gregory Mcmahill (President) as the authorized official for this organization.

What is the NPI number for Gregory B. Mcmahill, Od, An Optometric Corporation?

The NPI for Gregory B. Mcmahill, Od, An Optometric Corporation is 1336318807, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-09-23.