Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Peter Harald Langsjoen, MD

Cardiovascular Disease Physician in Tyler, TX · enumerated 2005 · practices at Peter H Langsjoen MD PA.

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

National Provider Identifier

1639164403

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Registry record

Entity type Individual (Type 1)

Name Peter Harald Langsjoen

Credential MD

Sex Male

Practice address Tyler, TX, 75701

Phone (903) 595-3778

Fax (903) 595-4962

Enumeration date Sep 16, 2005

Last updated in NPPES Oct 19, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License F6857 (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
060066132	Other	-	RR MEDICARE
110369901	Medicaid	TX	-
060010531	Other	-	TRICARE

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 1639164403 active?

Yes, as of the latest NPPES snapshot, NPI 1639164403 is active (record last updated 2007-10-19).

How do I verify Peter Langsjoen's NPI record?

Cross-check NPI 1639164403 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Peter H Langsjoen MD PA Specialist · Tyler, TX NPI 1750612180

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-19.