John M Oestreicher, PHD
John M Oestreicher is a Psychologist provider (Psychologist) practicing in Appleton, WI, registered in the NPPES registry with NPI 1619962024 since 2005. The credential PHD stands for Doctor of Philosophy.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1619962024 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | John M Oestreicher |
| Credential | PHD |
| Sex | Male |
| Practice address | 1531 S MADISON ST, Appleton, WI, 54915 |
| Phone | 9207304411 |
| Enumeration date | 2005-09-13 |
| Last updated in NPPES | 2008-09-09 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 103T00000X | Psychologist | Primary | 1822 | WI |
PHD — Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 39106700 | Medicaid | WI | — |
Copy-ready billing details
Provider: John Oestreicher, PHD NPI: 1619962024 Taxonomy: 103T00000X (Psychologist) Address: 1531 S MADISON ST, Appleton, WI, 54915
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1053314906 | Thomas Hoeft | Individual | Orthopaedic Surgery Physician | Appleton, WI |
| 1487647087 | Paula Hubert | Individual | Obstetrics & Gynecology Physician | Appleton, WI |
| 1063406064 | Christopher Wagener | Individual | Obstetrics & Gynecology Physician | Appleton, WI |
| 1144214149 | David Sovine | Individual | Psychiatry Physician | Appleton, WI |
| 1962496984 | Deborah Scuglik | Individual | Psychiatry Physician | Appleton, WI |
| 1508850595 | Bernard Green | Individual | Psychologist | Appleton, WI |
| 1326032319 | Daniel Natali | Individual | Psychologist | Appleton, WI |
| 1235123225 | Martin Haanstad | Individual | Psychologist | Appleton, WI |
Verify this record
Cross-check NPI 1619962024 against the authoritative CMS record: view John M Oestreicher 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
What is the NPI number for John Oestreicher?
Where does John Oestreicher practice?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2008-09-09.