Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Brian Duff, D.C.
Chiropractor in Plainfield, IL · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1619246345
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Registry record
Entity type Individual (Type 1)
Name Brian Duff
Credential D.C.
Sex Male
Practice address 16310 S Lincoln Hwy, Plainfield, IL, 60586
Phone (815) 782-8440
Enumeration date Dec 27, 2011
Last updated in NPPES Dec 27, 2011
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
Where does Brian Duff practice?
The practice location on file with NPPES is in Plainfield, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Brian Duff?
The National Provider Identifier (NPI) for Brian Duff is 1619246345, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Absolute Integrated Health, S.C. General Practice Physician · Plainfield, IL NPI 1487921235 Megan Klupshas Nurse Practitioner · Plainfield, IL NPI 1033488762 Joy Kluber Family Nurse Practitioner · Plainfield, IL NPI 1750703716 Tee Home Care Inc. In Home Supportive Care Agency · Plainfield, IL NPI 1891196234 Matthew Eiselt Chiropractor · Plainfield, IL NPI 1700540275 Kathleen Reitmann Nurse Practitioner · Plainfield, IL NPI 1457291171
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-12-27.