Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. John E Conto, OD
Optometrist in Milwaukee, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1578515003
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Registry record
Entity type Individual (Type 1)
Name Ms. John E Conto
Credential OD
Sex Male
Practice address 925 N 87th St, The Eye Institute, Milwaukee, WI, 53226
Phone (414) 456-2020
Fax (414) 456-6300
Enumeration date May 16, 2006
Last updated in NPPES Mar 13, 2013
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 |
|---|---|---|---|
| 1578515003 | Medicaid | WI | - |
| 039906261Z | Other | - | HUMANA |
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
Where does John Conto practice?
The practice location on file with NPPES is in Milwaukee, WI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for John Conto?
The National Provider Identifier (NPI) for John Conto is 1578515003, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-03-13.