Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Chris Tsimerekis, M.D., Inc.

Endocrinology, Diabetes & Metabolism Physician in Fountain Valley, CA · enumerated 2006 · authorized official Chris Tsimerekis, President.

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

National Provider Identifier

1801907704

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Registry record

Entity type Organization (Type 2)

Legal business name Chris Tsimerekis, M.D., Inc.

Practice address 11100 Warner Ave, Suite 354, Fountain Valley, CA, 92708

Phone (714) 549-9927

Fax (714) 556-9075

Enumeration date Aug 31, 2006

Last updated in NPPES Dec 6, 2012

Taxonomy & classification

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License G811410 (CA) Primary

Authorized official

Name Chris Tsimerekis

Title President

Phone (714) 549-9927

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

Where is Chris Tsimerekis, M.D., Inc. located?

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2012-12-06. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-06.