Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Isaac Melin, MD
Urology Physician in Wauwatosa, WI · enumerated 2021.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1689251225
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Registry record
Entity type Individual (Type 1)
Name Isaac Melin
Credential MD
Sex Male
Practice address 9200 W Wisconsin Ave, Wauwatosa, WI, 53226
Phone (414) 805-0805
Fax (414) 955-0122
Enumeration date Mar 29, 2021
Last updated in NPPES Jul 9, 2026
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1689251225 | Medicaid | WI | - |
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 Isaac Melin practice?
The practice location on file with NPPES is in Wauwatosa, WI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Isaac Melin?
The National Provider Identifier (NPI) for Isaac Melin is 1689251225, 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 2026-07-09.