NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Irvin Errol Jondahl, MD

Family Medicine Physician in Denison, TX · enumerated 2006 · practices at Larry K Wood MD PA.

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

National Provider Identifier

1912935958

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Irvin Errol Jondahl
Credential MD
Sex Male
Practice address 1014 Memorial Dr, 1st Floor, Denison, TX, 75020
Phone (903) 416-6000
Fax (903) 416-6183
Enumeration date Jun 29, 2006
Last updated in NPPES Sep 10, 2008

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License J5363 (TX) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
099255401 Medicaid TX -

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

How do I verify Irvin Jondahl's NPI record?
Cross-check NPI 1912935958 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1912935958 active?
Yes, as of the latest NPPES snapshot, NPI 1912935958 is active (record last updated 2008-09-10).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-09-10.