Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Marcia Ann Alff, DC
Chiropractor in Avoca, IA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1457339210
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Registry record
Entity type Individual (Type 1)
Name Dr. Marcia Ann Alff
Credential DC
Sex Female
Practice address 170 S Elm, Avoca, IA, 51521
Phone (712) 343-6394
Fax (712) 343-5404
Enumeration date Jan 3, 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
What is the NPI number for Marcia Alff?
The National Provider Identifier (NPI) for Marcia Alff is 1457339210, a Type 1 (individual) record in the CMS NPPES registry.
Where does Marcia Alff practice?
The practice location on file with NPPES is in Avoca, IA. Providers can have multiple locations; NPPES lists the primary practice address.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.