Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Karl Fannar Gunnarsson
Behavior Analyst in Carbondale, IL · enumerated 2013.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1114363959
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Registry record
Entity type Individual (Type 1)
Name Karl Fannar Gunnarsson
Sex Male
Practice address 2020 Evergreen Terrace Dr W, Apt. 1, Carbondale, IL, 62901
Phone (618) 203-4587
Enumeration date May 20, 2013
Last updated in NPPES May 20, 2013
Taxonomy & licenses
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.
Frequently asked questions
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Karl Gunnarsson?
Karl Gunnarsson is registered in NPPES with the primary taxonomy of Behavior Analyst. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-20.