Dr. Tamara Jill Marder, PH.D.
Dr. Tamara Jill Marder is a Behavior Analyst provider (Behavior Analyst) practicing in Vienna, VA, registered in the NPPES registry with NPI 1104128131 since 2010. The credential PHD stands for Doctor of Philosophy.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1104128131 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Tamara Jill Marder |
| Credential | PH.D. |
| Sex | Female |
| Practice address | 1604 SPRING HILL RD, 3RD FL, SUITE 310, Vienna, VA, 22182 |
| Phone | 7035851095 |
| Enumeration date | 2010-11-24 |
| Last updated in NPPES | 2010-11-24 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 103K00000X | Behavior Analyst | Primary | 1-07-3304 | — |
| 103T00000X | Psychologist | Secondary | PSY1000529 | DC |
| 103T00000X | Psychologist | Secondary | 04031 | MD |
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: Tamara Marder, PH.D. NPI: 1104128131 Taxonomy: 103K00000X (Behavior Analyst) Address: 1604 SPRING HILL RD, 3RD FL, SUITE 310, Vienna, VA, 22182
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1417961756 | Sarah Sirbasku Williams | Individual | Clinical Psychologist | Vienna, VA |
| 1760648984 | Patricia Ladisa-Gonzalez | Individual | Internal Medicine Physician | Vienna, VA |
| 1790930956 | Andrea Gallo De Oliva | Individual | Speech-Language Pathologist | Vienna, VA |
| 1104063122 | Luisa Herrera-Beltran | Individual | Speech-Language Pathologist | Vienna, VA |
| 1639482771 | Lisa Bull | Individual | Speech-Language Pathologist | Vienna, VA |
| 1952606089 | Laura Wyatt | Individual | Developmental Therapist | Vienna, VA |
| 1215228580 | Nikki Holway | Individual | Behavior Analyst | Vienna, VA |
| 1629492749 | Lilac Healthcare Services Inc | Organization | Home Health Agency | Vienna, VA |
Verify this record
Cross-check NPI 1104128131 against the authoritative CMS record: view Dr. Tamara Jill Marder 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.
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2010-11-24.