Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Susan N Diederich, O.D.
Optometrist in Wauwatosa, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1750318580
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Registry record
Entity type Individual (Type 1)
Name Dr. Susan N Diederich
Credential O.D.
Sex Female
Practice address 7511 Harwood Ave, Wauwatosa, WI, 53213
Phone (414) 453-1300
Fax (414) 453-1330
Enumeration date Jun 27, 2006
Last updated in NPPES Sep 17, 2025
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 38624700 | Medicaid | WI | - |
| WI2981 | Other | - | EYEMED VISION NO. |
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
How do I verify Susan Diederich's NPI record?
Cross-check NPI 1750318580 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1750318580 active?
Yes, as of the latest NPPES snapshot, NPI 1750318580 is active (record last updated 2025-09-17).
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-17.