Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Jack Lewis Duncan, DC
Chiropractor in Forest Lake, MN · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1932273133
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Registry record
Entity type Individual (Type 1)
Name Dr. Jack Lewis Duncan
Credential DC
Sex Male
Practice address 707 West Broadway, Forest Lake, MN, 55025
Phone (651) 464-4199
Fax (651) 464-4202
Enumeration date Nov 20, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders.
About the DC 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.
Frequently asked questions
Is NPI 1932273133 active?
Yes, as of the latest NPPES snapshot, NPI 1932273133 is active (record last updated 2007-07-08).
How do I verify Jack Duncan's NPI record?
Cross-check NPI 1932273133 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.