Loretta N Markus
Loretta N Markus is a Psychologist provider (Psychologist) practicing in Appleton, WI, registered in the NPPES registry with NPI 1427495829 since 2013.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1427495829 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Loretta N Markus |
| Sex | Female |
| Practice address | 4321 W COLLEGE AVE STE 200, Appleton, WI, 54914 |
| Phone | 9209160730 |
| Enumeration date | 2013-05-28 |
| Last updated in NPPES | 2023-01-29 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 103T00000X | Psychologist | Secondary | — | — |
| 103T00000X | Psychologist | Primary | 3907-57 | WI |
Copy-ready billing details
Provider: Loretta Markus NPI: 1427495829 Taxonomy: 103T00000X (Psychologist) Address: 4321 W COLLEGE AVE STE 200, Appleton, WI, 54914
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1598885709 | Ruth Nelson-Lau | Individual | Family Nurse Practitioner | Appleton, WI |
| 1104096189 | Sandra Mittelsteadt | Individual | Professional Counselor | Appleton, WI |
| 1851541080 | Steven Wille | Individual | Mental Health Counselor | Appleton, WI |
| 1891085130 | Eric Rueff | Individual | Child & Adolescent Psychiatry Physician | Appleton, WI |
| 1033485552 | Emily Hoch | Individual | Clinical Social Worker | Appleton, WI |
| 1922422807 | Sarah Saleemi | Individual | Internal Medicine Physician | Appleton, WI |
| 1235630625 | The Cervical Spine Institute and Neuromonitoring, LLC | Organization | Clinical Neurophysiology Physician | Appleton, WI |
| 1033745930 | Northeast Wisconsin Surgical Assistants, LLC | Organization | Physician Assistant | Appleton, WI |
Verify this record
Cross-check NPI 1427495829 against the authoritative CMS record: view Loretta N Markus on the official NPPES registry .
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. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2023-01-29.