Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Ohara and Associates A Professional Medical Corporation

Gastroenterology Physician in Irvine, CA · enumerated 2005 · authorized official Jun-Ichi Ohara, Owner.

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

National Provider Identifier

1558353144

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Registry record

Entity type Organization (Type 2)

Legal business name Ohara and Associates A Professional Medical Corporation

Practice address 22 Odyssey, Suite 170a, Irvine, CA, 92618

Phone (949) 654-8963

Enumeration date Aug 18, 2005

Last updated in NPPES Jun 15, 2024

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Secondary

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians Primary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name Jun-Ichi Ohara

Title Owner

Phone (949) 654-8963

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 Ohara and Associates A Professional Medical Corporation?

The NPI for Ohara and Associates A Professional Medical Corporation is 1558353144, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Ohara and Associates A Professional Medical Corporation?

NPPES lists Jun-Ichi Ohara (Owner) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-15.