Dr. John Wallace, PH.D.
Dr. John Wallace is a Psychologist provider (Psychologist) practicing in Harrison, NY, registered in the NPPES registry with NPI 1841483047 since 2007. The credential PHD stands for Doctor of Philosophy.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1841483047 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. John Wallace |
| Credential | PH.D. |
| Sex | Male |
| Practice address | Harrison, NY, 10528 |
| Phone | 9143376033 |
| Enumeration date | 2007-08-21 |
| Last updated in NPPES | 2007-08-21 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 103T00000X | Psychologist | Primary | 005179-1 | NY |
PHD — Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential
Copy-ready billing details
Provider: John Wallace, PH.D. NPI: 1841483047 Taxonomy: 103T00000X (Psychologist) Address: Harrison, NY, 10528
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1174558787 | Irina Martynova | Individual | Psychiatry Physician | Harrison, NY |
| 1013932383 | Richard Ellison | Individual | Forensic Psychiatry Physician | Harrison, NY |
| 1184633588 | Edward Bacigalupo | Individual | Clinical Social Worker | Harrison, NY |
| 1982713715 | Eric Grabstein | Individual | Psychiatry Physician | Harrison, NY |
| 1346334661 | Seshagiri Doddi | Individual | Geriatric Psychiatry Physician | Harrison, NY |
| 1215095898 | Anna Sass | Individual | Psychiatry Physician | Harrison, NY |
| 1942360821 | Steven Shainmark | Individual | Psychiatry Physician | Harrison, NY |
| 1255491189 | Adolph Soto | Individual | Psychiatry Physician | Harrison, NY |
Verify this record
Cross-check NPI 1841483047 against the authoritative CMS record: view Dr. John Wallace 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 2007-08-21.