Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Karl Daniel Granroth, PA-C

Physician Assistant in Winslow, AZ · enumerated 2007.

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

National Provider Identifier

1639294739

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Registry record

Entity type Individual (Type 1)

Name Karl Daniel Granroth

Credential PA-C

Sex Male

Practice address 620 Lee St, Winslow, AZ, 86047

Phone (928) 289-2000

Enumeration date Mar 20, 2007

Last updated in NPPES Mar 17, 2009

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 3602 (AZ) Primary

363AS0400X Surgical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 3602 (AZ) Secondary

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 1639294739 active?

Yes, as of the latest NPPES snapshot, NPI 1639294739 is active (record last updated 2009-03-17).

How do I verify Karl Granroth's NPI record?

Cross-check NPI 1639294739 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 2009-03-17.