Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Cynthia Louise Martzen, MA
Audiologist in Fresno, CA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1720086978
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Registry record
Entity type Individual (Type 1)
Name Mrs. Cynthia Louise Martzen
Credential MA
Sex Female
Practice address 1351 E Spruce, Suite 130, Fresno, CA, 93720
Phone (559) 432-5973
Fax (559) 432-5973
Enumeration date Jul 12, 2005
Last updated in NPPES Jul 17, 2008
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| AU0011710 | Medicaid | CA | - |
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 Cynthia Martzen?
The National Provider Identifier (NPI) for Cynthia Martzen is 1720086978, a Type 1 (individual) record in the CMS NPPES registry.
Where does Cynthia Martzen practice?
The practice location on file with NPPES is in Fresno, 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 2008-07-17.