Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Diane Helen Hafner, DC
Chiropractor in Redwood City, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1073527420
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Registry record
Entity type Individual (Type 1)
Name Ms. Diane Helen Hafner
Credential DC
Sex Female
Practice address 363 B Main St, Sparc Med, Redwood City, CA, 94063
Phone (650) 780-0575
Fax (650) 780-0587
Enumeration date Jul 28, 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 Diane Hafner?
The National Provider Identifier (NPI) for Diane Hafner is 1073527420, a Type 1 (individual) record in the CMS NPPES registry.
Where does Diane Hafner practice?
The practice location on file with NPPES is in Redwood City, CA. 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.