Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Daniel Clark Johnson, DC
Chiropractor in Clinton, IA · enumerated 2009.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1831427251
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Registry record
Entity type Individual (Type 1)
Name Daniel Clark Johnson
Credential DC
Sex Male
Practice address 1608 S 19th St, Clinton, IA, 52732
Phone (563) 242-2002
Fax (563) 242-2772
Enumeration date Nov 23, 2009
Last updated in NPPES Nov 23, 2009
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 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 Daniel Johnson?
Daniel Johnson is registered in NPPES with the primary taxonomy of Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Todd Slattery Chiropractor · Clinton, IA NPI 1245236751 Todd M Slattery P C Chiropractor · Clinton, IA NPI 1942538731 Paul Endriss Chiropractor · Clinton, IA NPI 1891069241 Integrated Muscle & Spine Chiropractic Clinic Inc Chiropractor · Clinton, IA NPI 1881129708 Robert Goetz Chiropractor · Clinton, IA NPI 1588168397 Kortni Smith Chiropractor · Clinton, IA NPI 1538765508
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-11-23.