Merle Litowitz, Ph.D., Plc
Merle Litowitz, Ph.D., Plc is a healthcare organization registered as Clinical Psychologist in Vienna, VA, holding Type 2 (organization) NPI 1649306978 since 2007. The authorized official on file is Merle Litowitz, Clinical Psychologist.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1649306978 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Merle Litowitz, Ph.D., Plc |
| Practice address | 380 MAPLE AVE W, SUITE 200, Vienna, VA, 22180 |
| Phone | 7032553400 |
| Fax | 7032553400 |
| Enumeration date | 2007-02-23 |
| Last updated in NPPES | 2020-08-22 |
Authorized official
| Name | Merle Litowitz |
|---|---|
| Title | Clinical Psychologist |
| Phone | 7032553400 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 103TC0700X | Clinical Psychologist | Primary | 0810001645 | VA |
Copy-ready billing details
Provider: Merle Litowitz, Ph.D., Plc NPI: 1649306978 Taxonomy: 103TC0700X (Clinical Psychologist) Address: 380 MAPLE AVE W, SUITE 200, Vienna, VA, 22180
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1992819098 | Merle Litowitz | Individual | Clinical Psychologist | Vienna, VA |
| 1831291202 | Janet Raymond | Individual | Counselor | Vienna, VA |
| 1508956814 | Katherine Ferguson | Individual | Psychiatry Physician | Vienna, VA |
| 1073630877 | Cathryn Burgess | Individual | Nurse Practitioner | Vienna, VA |
| 1356463525 | Virginia Smith | Individual | Clinical Child & Adolescent Psychologist | Vienna, VA |
| 1821215609 | Sarah Hover | Individual | Clinical Child & Adolescent Psychologist | Vienna, VA |
| 1770796997 | Elisa Nebolsine | Individual | Clinical Social Worker | Vienna, VA |
| 1366638595 | Laurie Smith | Individual | Health Maintenance Organization | Vienna, VA |
Verify this record
Cross-check NPI 1649306978 against the authoritative CMS record: view Merle Litowitz, Ph.D., Plc 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 2020-08-22.