Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. John Theodore Carlsen, PSCYHOLOGIST
Psychologist in Chicago, IL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1467428037
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Registry record
Entity type Individual (Type 1)
Name Dr. John Theodore Carlsen
Credential PSCYHOLOGIST
Sex Male
Practice address 333 S State Street Revenue, #200 Chicago Department of Public Health, Chicago, IL, 60604
Phone (312) 747-9442
Fax (312) 747-9447
Enumeration date Feb 24, 2006
Last updated in NPPES Jul 8, 2007
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 NPI 1467428037 active?
Yes, as of the latest NPPES snapshot, NPI 1467428037 is active (record last updated 2007-07-08).
How do I verify John Carlsen's NPI record?
Cross-check NPI 1467428037 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 2007-07-08.