Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Lars Erik Wallin III, MD

Urology Physician in Germantown, TN · enumerated 2013.

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

National Provider Identifier

1821434457

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Registry record

Entity type Individual (Type 1)

Name Dr. Lars Erik Wallin III

Credential MD

Sex Male

Practice address 1325 Wolf Park Dr Ste 102, Germantown, TN, 38138

Phone (901) 252-3400

Fax (901) 763-4305

Enumeration date May 22, 2013

Last updated in NPPES Dec 2, 2025

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 73340 (TN) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

Is NPI 1821434457 active?

Yes, as of the latest NPPES snapshot, NPI 1821434457 is active (record last updated 2025-12-02).

How do I verify Lars Wallin's NPI record?

Cross-check NPI 1821434457 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-12-02.