Maryann Siebert
Maryann Siebert is a Counselor provider (Counselor) practicing in Appleton, WI, registered in the NPPES registry with NPI 1578612404 since 2007. Practices at Thedacare, Incorporated (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1578612404 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Maryann Siebert |
| Sex | Female |
| Practice address | 444 N WESTHILL BLVD, Appleton, WI, 54914 |
| Phone | 9203804999 |
| Enumeration date | 2007-01-09 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 101Y00000X | Counselor | Primary | 3442-125 | WI |
Copy-ready billing details
Provider: Maryann Siebert NPI: 1578612404 Taxonomy: 101Y00000X (Counselor) Address: 444 N WESTHILL BLVD, Appleton, WI, 54914
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1417941071 | David Leicht | Individual | Psychologist | Appleton, WI |
| 1033106794 | Scott Radtke | Individual | Professional Counselor | Appleton, WI |
| 1003866864 | Mark Rovick | Individual | Child & Adolescent Psychiatry Physician | Appleton, WI |
| 1992898472 | Jane Doolan | Individual | Professional Counselor | Appleton, WI |
| 1609943364 | Ann Gaylord | Individual | Social Worker | Appleton, WI |
| 1396812988 | David Murry | Individual | Marriage & Family Therapist | Appleton, WI |
| 1720155328 | Linda Steffen | Individual | Psychologist | Appleton, WI |
| 1477600567 | Thedacare, Incorporated | Organization | Counselor | Appleton, WI |
Verify this record
Cross-check NPI 1578612404 against the authoritative CMS record: view Maryann Siebert 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 2007-07-08.