Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Melissa Wehrman Koss, APNP
Nurse Practitioner in Franklin, WI · enumerated 2009.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1477796233
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Registry record
Entity type Individual (Type 1)
Name Melissa Wehrman Koss
Credential APNP
Sex Female
Practice address 9200 W Loomis Rd, Franklin, WI, 53132
Phone (414) 529-9200
Fax (414) 529-9207
Enumeration date Apr 9, 2009
Last updated in NPPES Oct 23, 2024
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 5912 (WI) Primary
363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 5912-33 (WI) Secondary
363LG0600X Gerontology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 5912-33 (WI) Secondary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1477796233 | 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
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Melissa Koss?
Melissa Koss is registered in NPPES with the primary taxonomy of Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Jeffrey Aldred Internal Medicine Physician · Franklin, WI NPI 1528051539 Ronald Cohen Internal Medicine Physician · Franklin, WI NPI 1982697942 Dale Schaper Internal Medicine Physician · Franklin, WI NPI 1801880372 Maria Visaya Pediatrics Physician · Franklin, WI NPI 1487615431 Suzanne Kletch Physical Therapist · Franklin, WI NPI 1497704902 Melissa Kasbohm Physical Therapist · Franklin, WI NPI 1356382659 Debra Corbett Physician Assistant · Franklin, WI NPI 1174567945 Dorota Wozniewicz Internal Medicine Physician · Franklin, WI NPI 1942238696
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-23.