Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Timothy Todd Masters, OD
Optometrist in Storm Lake, IA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1871644864
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Registry record
Entity type Individual (Type 1)
Name Dr. Timothy Todd Masters
Credential OD
Sex Male
Practice address 100 East Milwaukee Ave, Storm Lake, IA, 50588
Phone (712) 732-7624
Fax (712) 732-7627
Enumeration date Jan 16, 2007
Last updated in NPPES Jul 8, 2007
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 |
|---|---|---|---|
| 2245720 | Medicaid | IA | - |
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 Timothy Masters?
The National Provider Identifier (NPI) for Timothy Masters is 1871644864, a Type 1 (individual) record in the CMS NPPES registry.
Where does Timothy Masters practice?
The practice location on file with NPPES is in Storm Lake, 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.