Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Louis William Topel, PSYD
Psychologist in Oshkosh, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1316036668
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Registry record
Entity type Individual (Type 1)
Name Dr. Louis William Topel
Credential PSYD
Sex Male
Practice address 220 Washington Ave., Oshkosh, WI, 54901
Phone (920) 236-4700
Fax (715) 732-7711
Enumeration date Oct 12, 2006
Last updated in NPPES Aug 11, 2020
Taxonomy & licenses
103T00000X Psychologist Behavioral Health & Social Service Providers · License 2553125 (WI) Secondary
PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice.
About the PSYD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 3919400 | Medicaid | WI | - |
| 2553125 | Other | WI | LICENSE |
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 specialty is Louis Topel?
Louis Topel is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-11.