Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Richard Alan Zelner

Gastroenterology Physician in Fountain Valley, CA · enumerated 2007.

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

National Provider Identifier

1235274259

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Registry record

Entity type Individual (Type 1)

Name Dr. Richard Alan Zelner

Sex Male

Practice address 18035 Brookhurst St., Ste. 2100, Fountain Valley, CA, 92708

Phone (657) 241-9090

Fax (714) 665-4603

Enumeration date Feb 20, 2007

Last updated in NPPES Jan 11, 2023

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License G50987 (CA) Primary

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

Is NPI 1235274259 active?

Yes, as of the latest NPPES snapshot, NPI 1235274259 is active (record last updated 2023-01-11).

How do I verify Richard Zelner's NPI record?

Cross-check NPI 1235274259 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-01-11.