Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Aaron Larson, PHARM.D.

Pharmacist in Sioux Falls, SD · enumerated 2015.

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

National Provider Identifier

1245613835

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Registry record

Entity type Individual (Type 1)

Name Aaron Larson

Credential PHARM.D.

Sex Male

Practice address 2501 W 22nd St, Sioux Falls, SD, 57105

Phone (605) 336-3230

Fax (605) 333-5305

Enumeration date Jul 1, 2015

Last updated in NPPES Jul 1, 2015

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 6291 (SD) Primary

PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD 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 1245613835 active?

Yes, as of the latest NPPES snapshot, NPI 1245613835 is active (record last updated 2015-07-01).

How do I verify Aaron Larson's NPI record?

Cross-check NPI 1245613835 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 2015-07-01.