Bay Children'S Services
Bay Children'S Services is a healthcare organization registered as Child & Adolescent Psychiatry Physician in Berkeley, CA, holding Type 2 (organization) NPI 1003095563 since 2007. The authorized official on file is Thomas Tarshis, Founder and Cfo.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1003095563 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Bay Children'S Services |
| Other name | <Unavail> |
| Practice address | 3030 ASHBY AVE, SUITE 104, Berkeley, CA, 94705 |
| Phone | 5102244221 |
| Fax | 5104221442 |
| Enumeration date | 2007-10-31 |
| Last updated in NPPES | 2026-01-29 |
Authorized official
| Name | Thomas Tarshis |
|---|---|
| Title | Founder and Cfo |
| Phone | 5102244221 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 103TC2200X | Clinical Child & Adolescent Psychologist | Secondary | — | — |
| 2084P0800X | Psychiatry Physician | Secondary | — | — |
| 103T00000X | Psychologist | Secondary | — | — |
| 106H00000X | Marriage & Family Therapist | Secondary | — | — |
| 2084P0804X | Child & Adolescent Psychiatry Physician | Primary | — | — |
Copy-ready billing details
Provider: Bay Children'S Services NPI: 1003095563 Taxonomy: 2084P0804X (Child & Adolescent Psychiatry Physician) Address: 3030 ASHBY AVE, SUITE 104, Berkeley, CA, 94705
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1518908623 | Gail Hunt | Individual | Clinical Social Worker | Berkeley, CA |
| 1124047915 | Jane Weisbin | Individual | Psychologist | Berkeley, CA |
| 1902928088 | Sharon Testa-Harker | Individual | Marriage & Family Therapist | Berkeley, CA |
| 1285822080 | Taly Rutenberg | Individual | Clinical Social Worker | Berkeley, CA |
| 1467609453 | Patricia Mcguckian-Cavanaugh | Individual | Marriage & Family Therapist | Berkeley, CA |
| 1982837480 | Jennifer Kim | Individual | Acupuncturist | Berkeley, CA |
| 1356697346 | Maria-Christina Stewart, Ph.D. Psychologist, Inc. | Organization | Clinical Psychologist | Berkeley, CA |
| 1013776145 | Catalina Martinez | Individual | Health & Wellness Coach | Berkeley, CA |
Verify this record
Cross-check NPI 1003095563 against the authoritative CMS record: view Bay Children'S Services 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
How current is this record?
Where is Bay Children'S Services located?
Source: CMS NPPES (public data). Snapshot 2026-07-10. Provider record last updated 2026-01-29.