Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Ronald Cotliar MD Inc

Dermatology Physician in Tustin, CA · enumerated 2010 · authorized official Evelyn Riley, Office Manager.

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

National Provider Identifier

1962729269

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Registry record

Entity type Organization (Type 2)

Legal business name Ronald Cotliar MD Inc

Practice address 13420 Newport Ave, Suite G, Tustin, CA, 92780

Phone (714) 731-0061

Fax (714) 731-0164

Enumeration date Apr 26, 2010

Last updated in NPPES May 10, 2010

Taxonomy & classification

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License G25069 (CA) Primary

Authorized official

Name Evelyn Riley

Title Office Manager

Phone (714) 731-0061

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.

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Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2010-05-10. Verify at npiregistry.cms.hhs.gov.

Where is Ronald Cotliar MD Inc located?

The practice location on file with NPPES is in Tustin, CA.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-05-10.