Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Ian Atkinson, M.D., Inc., A Professional Corporation

Health Service Clinic/Center in Monterey, CA · enumerated 2019 · authorized official Ian Atkinson, President.

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

National Provider Identifier

1154888568

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name Ian Atkinson, M.D., Inc., A Professional Corporation

Practice address 484 Washington St Ste B120, Monterey, CA, 93940

Phone (831) 585-8889

Enumeration date Feb 22, 2019

Last updated in NPPES Feb 22, 2019

Taxonomy & classification

261QH0100X Health Service Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Ian Atkinson

Title President

Phone (831) 585-8889

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 a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Ian Atkinson, M.D., Inc., A Professional Corporation?

Ian Atkinson, M.D., Inc., A Professional Corporation is registered in NPPES as a Health Service Clinic/Center (its primary provider taxonomy).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-02-22.