Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ivri K Messinger, D.O.

Pediatrics Physician in San Marcos, TX · enumerated 2006.

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

National Provider Identifier

1114975711

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Registry record

Entity type Individual (Type 1)

Name Dr. Ivri K Messinger

Credential D.O.

Sex Female

Practice address 601b Leah Ave, San Marcos, TX, 78666

Phone (512) 392-1700

Fax (512) 396-8743

Enumeration date May 5, 2006

Last updated in NPPES Jun 16, 2011

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License G8920 (TX) Primary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License OP00001494 (WA) Secondary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

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

Where does Ivri Messinger practice?

The practice location on file with NPPES is in San Marcos, TX. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Ivri Messinger?

The National Provider Identifier (NPI) for Ivri Messinger is 1114975711, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-06-16.